Service Pack for KISSsoft 03/2013

There are two different versions for the latest service pack available: as self-extracting archive (extension .exe) or as zip-archive.

**Download Service Pack 8**

**Download Service Pack 7**

**Download Service Pack 6**

**Download Service Pack 5**

**Download Service Pack 4**

**Download Service Pack 3**

**Download Service Pack 2**

**Download Service Pack 1**

**ProEngineer interface** (Additional download, not included in the Service Pack above)

**Changelog**

**These Service Packs fix the following issues:**

**CHANGELOG SERVICE PACK 8**

KISSsoft - Bearing calculation

SP8 **Thrust spherical bearings inner geometry (related to service pack 7)**

Thrust spherical bearings were wrong corrected in the last service pack. This affects only the inner geometry method.

SP8 **Standalone bearing calculation - angular contact and taper roller bearings**

The standalone bearing module (*.W51 file extension) required a diametral clearance value for angular contact and taper roller bearings, but these values are not needed for these two types and were never used.

SP8 **Documentation of bearing local stiffness dFr/dur and dMr/drr**

The documentation of the bearing local stiffness was wrong in the case of the standalone bearing calculation (*.W51 file). The stiffness matrix values where correct though.

SP8 **Static equivalent load P0**

The static equivalent load P0 was always calculated as P0 = X0 * Fr + Y0 * Fa, and not as P0 = max(X0 * Fr + Y0 * Fa, Fr) as described in the standard (ISO 76)

KISSsoft - CAD interface

SP8 **CAD-Interface: Problems by helical internal gears**

Some helical internal gears couldn't be generated completely.

KISSsoft - Gear calculation

SP8 **Manufacturing allowance in face load factor calculation was not reseted correctly**

If the calculation of KHbeta ISO6336-1 Annex E was used with manufacturing allowance, the face load factor was still calculated with manufacturing allowance, when the calculation without manufacturing allowance was selected.

SP8 **Deviation between the measurement points and 3D model of bevel gear**

In the measurement grid report of bevel gear, the points are calculated exactly based on the geometry definition. However, the precision of the tooth form calculation in 3D model is dependent on the setting of the tooth form approximation deviation in the tab "Tooth form". Thus, it could give relatively big deviation for large module gears. Now, we improved the internal precision of the tooth form calculation to be more consistent with the measurement points even for the large gears.

SP8 **Load spectrum with KHbeta ISO6336-1, Annex E and load iteration for planetary systems**

The Planetary system had problems to find the correct gears on the shaft if KHbeta calculation according to ISO6336-1, Annex E, was used with shafts, iteration of load distribution and a load spectrum.

SP8 **KHbeta of Planetary system for strength calculation**

The option 'KHbeta for the strength calculation' in the dialog 'Define Axis alignment' was always giving the maximum value to the strength calculation.

SP8 **The Planetary Analysis was alawys showing the results as right flank results.**

The graphic representation of the path of contact was always shown as a right flank calculation even if the left flank was in contact.

SP8 **Tooth form in the geometry manager**

The tooth form in the geometry manager wasn't refreshing when values where changed.

SP8 **KHbeta calculation with shaft was canceled if shaft didn't converge**

In case of a not converging shaft calculation the KHbeta calculation was canceled. This is now fixed through asking the user if he wants to deactivae the iterative calculation. If yes is answered the calculation will be converging, if no the calculation will abort.

KISSsoft - General

SP8 **If license for ISO6336-1 Annex E is missing, the contactanalysis was not working**

If license for ISO6336-1 Annex E is missing, the contactanalysis was not working with planetary systems.

KISSsoft - Proof of strength with local stresses

SP8 **FKM Guideline: some issues**

- KWK_{σ3} = 1, if σ3 is vertical to the surface area.

- Kf-factor have to be >= 1

- To calculate σ_{V} by pressure is to use f_{σD} instead of f_{σZ}

- Static calculation: The values for σ_{sk}, n_{pl}, K_{p}, a_{sk}, σ_{hydro} were avaiable only for the System, now available for all elements.

SP8 **FKM: relation R < -1 allowed**

The relation R smaller -1 is now allowed, it is used for the cases with alternating compression stress.

KISSsoft - Shaft calculation

SP8 **Frictional moment of drag losses by the bearing calculation**

The frictional moment of drag losses was always calculated with the oil level depth h = 0.

SP8 **Sizing for strength - line at the wrong position**

The functionality 'sizing for strength' draw the calculated line at the wrong position, when the shaft position isn't 0.

SP8 **Sizing lifetime FKM**

The sizing of the lifetime for the strength calculation according FKM was not always giving a result. In the most cases the required service life H was set to 0 h.

SP8 **Thrust bearings on shaft calculation**

The shaft calculation was handling all bearings with pressure angle, that were defined as pure thrust, in a wrong way. It is suggested that you run the relevant calculations again. This affects only the inner geometry method.

SP8 **Load spectrum in shaft calculation**

Removed error message for checking the descending order of the stress levels of load spectrum elements. The message unnecessarily interrupts the calculation even when the calculation proceeds without any problem.

SP8 **Messages**

Messages "Radial and axial force are 0!" and "Please define which bearing has to support the axial force!"
These error messages were showing up some times in the shaft calculation, and they were misleading.

SP8 **Inconsistent bearing tolerance from older calculation files**

Some old calculation files (prior to Release 2013) were saved with inconsistent tolerance values for some bearings. For example, it was possible that a deep groove ball bearing was defined with a tolerance value which corresponds to taper roller bearings. The wrongly selected tolerance was used then in the calculation. This affects only the inner geometry calculation.

SP8 **Thin ring four-point bearings**

This a special bearing category, which is not defined in the standard for the approximation of inner geometry, but KISSsoft ignored that fact. Dedicated messages guide the user in the required steps for any problem resolution.

**CHANGELOG SERVICE PACK 7**

KISSsoft - Bearing calculation

SP7 **Spherical roller bearings with clearance change**

When a (radial) spherical roller bearing was changing its internal clearance (due to press fit, thermal effects etc.), the bearing calculation results were not correct. This affects only the inner geometry method.

SP7 **Thrust spherical bearings inner geometry**

The thrust spherical bearings (inner geometry method) were calculated wrong, due to an internal error in the geometry handling.

SP7 **Ball bearings, inner geometry method**

If the user defined own geometry for ball bearings, sometimes the error message "Iteration for the axis ratio is not possible!" was shown. The code has been corrected so the message doesn't show up anymore.

KISSsoft - CAD interface

SP7 **Interface to Autodesk Inventor 2015**

Adaption to Autodesk Inventor 2015.

KISSsoft - Connections

SP7 **Detaching speed**

The detaching speed of snap rings on shafts(snap ring, module M50) was calculated wrong.

KISSsoft - Gear calculation

SP7 **Tolerance on Grinding allowance**

A Tolerance on the Grinding allowance was reducing the pregrinding tooth thickness tolerance interval, instead of increasing it. This was affecting the report.

SP7 **Active tip diameter dNa with undercut on the paired gear**

An undercut, if starting too high on the tooth, may reduce the active tip diameter on the paired gear. This was not always considered correctly.

SP7 **Flag for iterating load distribution (KHbeta) (Planetary stages)**

The flag 'Iterating load distribution of contacts' in tab 'Face load factor/Contact analysis' in the module specific settings for planetary gears was not working. If the flag was checked an error message was shown.
The flag is now renamed to 'Iterating load distribution (KHbeta)' and it is recommended to use it always (in case of planetary gears) if the load distribution factor KHbeta is calculated with shafts.

SP7 **Tooth thickness at tip diameter with semi-topping tool**

Tooth thickness at tip diameter with semi-topping tool is improved (formula used until now was slightly simplified).

SP7 **Graphs of contact analysis: Bending stress when using AGMA rating**

Due to a mistake in converting the bending stress from sigF0 to sigF, the tooth bending stress in the graphs of the Contact analysis was wrong. This happened only, when an AGMA rating was used.

SP7 **Sizing of root radius of reference profile in bevel gear calculation**

In bevel gear calculation, the sizing of the root radius coefficient of the reference profile was wrong.
(1) The tooth thickness modification coefficient was wrongly treated.
(2) The resultant value was divided by the normal module one more time.

SP7 **Runout tolerance for bevel gear**

The runout tolerance for bevel gear (Fr) was giving slightly bigger values in case of DIN3965 with the quality bigger than 8.

SP7 **Convergence Problem of Contact analysis of Planetary system**

In some cases the contact analysis of planetary system had converging problems while considering missalignement of planets and carrier.

SP7 **Finesizing of planetary stage**

Finesizing of planetary stage: When using dv3 +-% as criterion: In some cases possible solutions were eliminated, if the +-% range was less than 15%. This is now corrected.

SP7 **Calculation of safeties with duty cycles**

The iteration, when calculating the safeties (bending, flank,..) with duty cycles, is much improved. Up to now, when complex duty cycles were applied, sometimes an error message 'Iteration does not work' showed up.

SP7 **Contact ratio of bevel gears**

The contact ratio of bevel gear was not shown correctly in the result window with Klingelnberg Palloid KN3026 calculation.

SP7 **Tip form diameter when tip diameter tolerances as h6 are used**

In the first calculation run, tip diameter tolerances based on ISO tolerance class (as h6) were read in too late. Therefore in some cases when running the calculation again, tip form diameters dFa.e/i could change.

KISSsoft - General

SP7 **Measurement report for hypoid gear**

As the 3D geometry of the hypoid gear is not available, the calculation of the measurement grid report is suppressed.

SP7 **Lifetime calculation with materials having SN-curve in a file**

Lifetime calculation (only when using the lifetime report) with materials having very uncommon (measured) SN-curves in dat-files was giving wrong results. This happened with PEEK.

SP7 **Short modifications at the tip**

In the tooth form calculation, the modification at the tip has been improved, so that now also very short modifications with big tip relief are possible.

SP7 **Information for dCa for modifications**

In the tab "modifications" the value of dCa in the Info-text has been improved, so that it corresponds better to the generated tooth form.

KISSsoft - Shaft calculation

SP7 **Stability of shaft solver**

The stability of the shaft solver has been improved, especially for the inner geometry method with very small loads.

SP7 **Load spectrum in shaft calculation**

When the user opens and closes the load spectrum definition window, the values under the 7th digits from the decimal point are truncated.
This may cause some problem such as the sum of the frequencies is not 100% or the frequencies with the other elements are not consistent.
Now we save the load spectrum in scientific notation with higher precision to prevent the problem.

SP7 **Misleading error message for bearings**

For some shaft models, the misleading internal error message (allways in German)"Axialkraftaufnahme ist undefiniert!" or "Nur ein Lager kann die Axialkraft aufnehmen!" was shown, even though the calculation was consistent. This is corrected (message doesn't show now), and the results should remain unchanged. It is however recommended that you control the results for these cases again.

KISSsys - General

SP7 **Cut view for the deformation contour in KISSsys 3D Viewer**

The cut view is now also available for the deformation contour in 3D viewer of KISSsys.

**CHANGELOG SERVICE PACK 6**

KISSsoft - 3D geometry (STEP interface)

SP6 **Oversize factor for worm wheel cutter**

The oversize factor for worm wheel cutter was wrongly treated in 3D geometry generation of worm wheel. Now it's fixed and gives correct surface.

SP6 **STEP model of planetary gear**

The planets in the STEP model of planetary gear had wrong position.

KISSsoft - CAD interface

SP6 **Interface to SolidWorks 2014**

Adaption to SolidWorks 2014.

SP6 **Interface to Kompas V14**

Adaption to Kompas V14.

KISSsoft - Gear calculation

SP6 **Face gear: roF for bending and report update**

a) Face gear report, when using static calculation, did not show all results.
b) For method ISO and method static, the root radius at 60° tangent section is now calculated according VDI2637 method, thus giving more precise values for bending stress.

SP6 **Rack: roF according VDI2637**

Rack: For method ISO and method static, the root radius at 60° tangent section is now calculated according VDI2637 method, thus giving more precise values for bending stress.

SP6 **Negative 'Angle of first Planet' in 'Define axis alignment'**

The KHbeta calculation and Contact analysis for planetary gears had problems with shaft files, if the 'Angle of first Planet' in the 'Define axis alignment' dialog had a negative value.

SP6 **Second load spectrum for planet**

The second load spectrum for a planetary system was not displayed correctly in the user interface.

SP6 **Numerical problems in tooth form calculation**

If the grinding wheel tip radius is 0, numerical problems in the tooth form calculation occured and the tooth couldn't be calculated correctly.
Now, in the calculation, a very small radius is applied.

SP6 **Safety for wear with duty cycles**

Safety factors for wear SW, when duty cycle were applied, had often iteration problems. This is improved.
In the case of cylindrical gears, in the result window the safety factor for reference load was displayed.

SP6 **Tooth form report**

In the report of the Tooth form calculation: For inner gears with odd tooth number, the measure over 2 balls is corrected.

SP6 **Gleason data dialog using diametral pitch**

The 'conversion of Gleason data sheet' window and the 'input of Gleason data' window were always using transverse normal module even when the normal diametral pitch was to be used in bevel gear calculation. Now it's using transverse diametral pitch according to the setting.

SP6 **Plastic data from DSM (PA4.6)**

Added a new message for the flank data, if no. of cycle is higher than data available.

SP6 **Scuffing according ISO TR 13989-1 (Flash temperature)**

Review of the ISO TR 13989-1 (Flash temperature) standard showed some printing errors in the document. We corrected this in the software. In case of gears with relevant tip relief Ca higher than optimal tip relief Ceff, values may change (higher safety factors SB). Also for helical gears with total overlap eps.g > 2 with tip relief Ca>0, the flash temperature distribution will be lower (higher safety factors SB).

SP6 **KHbeta Calculation in profile optimization without KHbeta Annex E license**

The profile optimization calculation did not calculate KHbeta correctly if the user does not own the license of ISO6336-1 KHbeta Annex E. If so, the calculation does now a fall back to the method B of ISO6336-1.

SP6 **Contact analysis problem with dxf files**

The contact analysis had in some cases problems with tooth form imported from a dxf file.

SP6 **dxf export of profile diagram**

The dxf export for the profile diagram was not working in Patch E. This problem was fixed.

SP6 **Redundant warning for static calculation**

Removed a redundant warning message for static calculation about risk of wear.

SP6 **Planetary contact analysis did not work with sun which has a speed of 0 rpm**

When the speed of the sun is 0 rpm in a planetary system, the contact analysis did not work.

SP6 **Quality symbol for AGMA 2015**

Changed to use the symbol "A" instead of "Q" when the user selected the AGMA 2015 for the quality standard.

SP6 **Tip form diameter dFa calculated with semi-topping and grinding allowance corrected**

Tip form diameter dFa, with semi-topping tool and grinding allowance, was slightly wrong (a difference to dFa from tooth form was noted). This is corrected.

SP6 **COM interface for operating backlash calculation**

Added COM interface for operating backlash calculation.

SP6 **Contact analysis of Planetary Systems did not converge in some cases**

The contact analysis had in seldome cases problems solving the system equation matrix because of a wrong comparison strategie of the resulting determinat of the matrix.

SP6 **User defined center distance used in contact analysis**

In the contact analysis for gear pairs, user defined center distance was not considered (the theoretical center distance was used instead). This is corrected now.

KISSsoft - General

SP6 **Rights for measure function in graphic window**

The right Z05x regulates the measure function only for gear modules. For all other modules, the measure function is available even without Z05x.

SP6 **Message window clearing**

Message window was not cleared when a new data file was opened.

KISSsoft - Interference Fit calculation

SP6 **Sizing function for tolerances**

The sizing function for tolerances gives no warnings back anymore, when the diameter is out of range for a tolerance class.

KISSsoft - Shaft calculation

SP6 **K2F and γF-Factors different for hard surface layer**

According to the standard DIN 743:2012, K2F and γF-Factor change for shafts with a hard surface layer.

SP6 **Missing shaft connection in connecting element of shaft model**

When the inside or outside connected shaft was not given as input in the element editor of a connecting element (as for example when a shaft is deleted from the model), the calculation crashed. This is now fixed, and an error message hints to the problematic connecting bearing.

KISSsoft - Shaft-hub-connections

SP6 **Equivalent diameter hub corrected**

For hubs with sections with different outer diameter, the equivalent diameter hub was wrong calculated in the modules for splined shafts m02b, splines m02c, Z09a and woodruff key m02e.

**CHANGELOG SERVICE PACK 5**

KISSsoft - 3D geometry (STEP interface)

SP5 **Tip rounding of rack in 3D geometry**

The 3D geometry of rack with tip rounding couldn't be generated.

SP5 **COM interface for bevel gear 3D model**

The position of bevel gear 3D model via COM interface was different from that of the model saved in the graphics window.

KISSsoft - CAD interface

SP5 **Reopen calculation file wasn't working correctly**

NX, SolidWorks, SolidEdge, Autodesk Inventor: To reopen the calculation file from the KISSsoft-Addin wasn't possible in all modules.

SP5 **Interface to SolidEdge ST6**

Adaption to SolidEdge ST6

KISSsoft - Gear calculation

SP5 **Contact analysis/KHβ with shaft files**

If a contact analysis or KHβ calculation according to ISO 6336 was requested with shaft files, and in the shaft the gear of interest was mounted on an additional worm wheel, the gear selection did not work. Thus, the iterative load distribution could not be performed, and the load was varying only linearly (no iteration).

SP5 **Inner diameter di calculated with given sR***

The inner diameter di was rounded to 1 digit after the comma, which was calculated with a given rim thickness coefficient sR*. Then in the report not the exact coefficient sR* was shown. We round now the inner diameter di to 3 digits after the comma.

SP5 **Calculation of Ca and Cf, when Excentric profile crowning is used**

Tip and root relief (Ca and Cf), as shown in the report, was wrong, when excentric profile crowning was used.

SP5 **Face gear with radial offset**

We don't consider the radial offset in the 2D tooth form calculation of face gear.
Thus, the related graphics are not consistent with the theoretical tooth form.
We suppress the tooth form graphics for face gear to avoid the confusion.
The user should use 3D geometry for checking the tooth form and the contact pattern.

SP5 **Planetary gears: Report of the sizing modifications**

In the tab 'Profile modification' was the report button never activ, now if you press calculate the button will be set activ.

SP5 **Master Gear: Test radius according AGMA 2002: Radius Rm changed**

For the calculation of RTmin and RTmax according AGMA 2002, the 'Master Gear Test radius' Rm was changed. Until now tip diameter dae was used, now reference diameter d will be used. The definition of Rm in AGMA2002 is not very clear, but for master gears with x=0 it should be Rm = d/2. So we decided to use always d/2.

SP5 **Problem in gear calculation with coaxial shafts**

In some cases with coaxial shafts and relativ speed, the gear calculation was not able to find the fitting gear on the shaft for KHbeta Annex E and contact analysis.

SP5 **Bevel gear efficency according Wech**

In some cases, no efficiency according Wech was calculated due to calculation precision. This is improved.

SP5 **Crossed helical gears: DIN3962 and 3963**

Tolerances according DIN3962 and 3963 can now be activated (as for cylindrical gears).

SP5 **Crossed helical gears: Tolerances according DIN 3961 is set, if VDI2545 method is selceted**

Crossed helical gears: If tolerances according calculation method is selected, always ISO1328 was used. This is corrected: Tolerances according DIN 3961 is set, if VDI2545 or VDI2736 method is used.

SP5 **Change of reference gear in load spectrum calculation**

In load spectrum calculation with own input by Value, the values are not converted accordingly when the reference gear changed.
Now the reference gear can be changed only if the load spectrum is input by Factors, not by Values.

SP5 **ZK tooth form of worm gear**

If the base diameter is bigger than the root diameter, the ZK tooth form of worm gear can be wrong for big tool tip diameter.

SP5 **Info graphics of face gear**

Some of the info graphics of face gear are improved and added.
Now the helix angle and the axial and radial offset directions are more clearly defined.

KISSsoft - General

SP5 **Tip relief**

Small tip reliefs may be incorrect for gears with great profile shifts. Bug removed.

SP5 **The dockwindows Information and Graphiclist could not be deactivated**

The dockwindows Information and Graphiclist where not possible to deactivate. They appeard each time after restarting a calculation module.

SP5 **Safeties with duty cycles calculated with materials having there own Woehler line definition**

For duty cycle calculation only: We found a bug, resulting in wrong safety factors, when materials with proper Woehlerline were used (as for example the DNV materials).

KISSsoft - Hertzian pressure

SP5 **Hertzian stress beneath the contact area**

The distance beneath the surface for Hertzian stress graphics was too small. Now it's shown to the depth of 6 times of the distance of maximum shear stress.

KISSsoft - Shaft calculation

SP5 **Sizing of bearing with load spectrum**

The sizing of a bearing did crash when a load spectrum was applied.

SP5 **Correction of center of mass calculation**

The center of mass was not calculated correctly for some cases of shafts with inner contour.

**CHANGELOG SERVICE PACK 4**

KISSsoft - Bolt calculation

SP4 **Screws: x-axis unit in the joint diagram (restraint)**

The unit of the x-axis was wrong in the joint diagram.(mm instead of mym)

KISSsoft - Gear calculation

SP4 **Deformation of plastic gears according VDI2736**

A (small) change in the formulas for the check of the deformation of plastic gears according VDI2736 is implemented.

SP4 **Woehlerline Grafic (for materials with own woehlerline)**

The grafic of the Woehlerline, when using materials with own woehlerline, was not correct.

SP4 **Materials for calculation according DNV 41.2**

Woehler line of DNV materials revised (some smaller changes in the time depending range).

SP4 **Micropitting XCa factor changed to Method A**

Based on last discussion in the ISO comitee,
calculation of tip relief factor XCa is always calculated following method A. (Small difference.)

SP4 **Bevel Gears according ISO10300: Relation be/b**

If relation be/b was introduced (Setting the flag in tab 'Rating'), and later the flag was removed: Then b/be will be re-set to standard value (0.85).

SP4 **Face width of 3D geometry of double helical rack**

3D geometry of double helical rack was using effective face width, not actual one.

SP4 **Active diameters in the profile diagram**

The minimum value of active root and tip diameters (dNf.i and dNa.i) from tolerance field is used instead of nominal values.
Also, the marker texts are using SAP (start of active profile) and EAP (end of active profile) instead of dNf.i and dNa.i when the US customary units are used.

SP4 **Error message when using DIN58405 tolerances**

When using the new tolerances for DIN58405 (with Quality 5-10), the error messages showing up were corrected.

SP4 **Contact analysis: Additional warnings**

An additional warning is implemented:
Progressive profile modification create a jump in the flank curvature at the beginning of the modification. Hertzian stress will have a peak at this position.

SP4 **Profile Modification for Crossed Helical Gears**

In case of crossed helical gears with profile corrections:
The corrections on gear 2 were not shown in the graphics.

SP4 **Graphical Method (for YF, YS)**

For gears with profile overlap eps.a smaller then 1.0, if YF method B was used, in some special cases the load application angle was near to 90°, giving then wrong results.

KISSsoft - General

SP4 **Warning if Start of Root modification is too near to the Root Diameter**

Especially when root modifications are applied to 'Constructed involute', often the start of root modification (if the input 'from Root Form Diameter' is used) is too near to the root diameter; producing problems in the tooth form at this position.
A warning is generated, if this may happens.
The user should then change the start of modification on a bigger diameter.

KISSsoft - Graphics

SP4 **Flashtemperature graphic of bevel gears**

The flashtemperature graphic for bevel gears is deleted. This graphic had no function.

SP4 **Face gears : Display of vga in grafic corrected**

Face gear: In the graphic of sliding velocity, instead of vgf, zetaa2 was displayed.

SP4 **Woehlerline Diagramm**

When duty cycles with individual KHb per element were used, the stress was not correctly shown in the graphic.

KISSsoft - Shaft calculation

SP4 **Hardness definition for shaft materials**

The hardness definition wasn't in the material dialog from the shaft. This value is used for the DIN 743 calculation.

SP4 **Classic bearing calculation: Force at 180°**

In some cases, the shaft calculation did not converge when one of the bearings experienced a reaction force at 180°. This affects only the classic bearing method.

SP4 **FKM: static support factor nst**

The static support factor nst for the cross sections 'smooth shaft' and 'own input' are set now to 1. Before nst was set to 0 and the calculation stopped.
The static support factor nst is a part of the material mechanical support factor nwm.

SP4 **Documentation points (shaft sections) in main report**

The data of the documented sections were not shown correctly in the main report.

SP4 **No tooth trace modification when tab closed**

In some cases warnings from the tooth trace modification came even if tab was closed.

SP4 **Radial offset in pure thrust bearings**

If radial offset was used at a bearing which was selected by the user as pure thrust bearing, the results (bending, bearing reactions) were wrong. This affected only the inner geometry method.

SP4 **DIN 743: compressive stress modificated when sigzdm < 0**

If (sigzdm < 0 and sigbm > 0), compressive stress (DIN 743, part 2):
- the maximum value of the bending stress sigbmax is negative. As comment in the DIN 743 only sigbm (table 1) is described.
- for taumv the sigmv calculated with the formula on page 12 was used instead the formula (23) on page 14.

SP4 **Campbell diagram**

The calculation of backward/forward whirling modes for the Campbell diagram has been improved (there were crossings in the eigenfrequencies at high rotation speeds). This is improvment is only visible when the corresponding flag "Calculations -> Use alternative Campbell diagram algorithm" is set (this is found in module specific settings).

KISSsys - General

SP4 **Problems with special duty cycle**

Duty cycle with elements having power lower than 0.0000001 kW were not calculated.
This happened with KISSsys and also in KISSsoft. But in KISSsoft error messages were visible, so the user could react.

**CHANGELOG SERVICE PACK 3**

KISSsoft - Bearing calculation

SP3 **Modified bearing lifetime αISO factor**

The lubricant viscosity ratio κ, which is used in the determination of the bearing lifetime modification factor αISO, can sometimes be below 0.1 (κ<0.1). In these cases, the modified bearing lifetime appeared as infinite.

KISSsoft - CAD interface

SP3 **out-files by 3D-export**

The out-files (f.e. Z10GEAR1.out) were only written if you changed the parameter "CALCINTERFACEOUT" in the kiss.ini, now they will also be created, if you start the 3D export.

SP3 **Fixed the STEP export file format**

Fixed the STEP export file format not to include log data since some of CAD modeler can't read the file correctly

SP3 **Creo/ProEngineer: Cad system crashed with a big duty cycle**

If the calculation file has a line with more than 255 characters, for example a calculation with a big duty cycle, the cad system crashed, when the gear was generated.

SP3 **SolidEdge ordered-mode**

Some SolidEdge installations opens for the generation of a gear a new file in the 'synchronous' mode instead of the 'ordered' mode. Now we set this mode to 'ordered' if we open a new part, before the interface loads a new part with the default settings.
(Note: From now on only SolidEdge versions bigger or equal ST3 are supported!)

KISSsoft - COM

SP3 **SaveFile-function in the COM interface**

The SaveFile function in the COM Interface didn't save the correct data in the file.

KISSsoft - Feather key calculation

SP3 **Sizing functionality of nominal torque**

The sizing functionality for the nominal torque was not always working correctly, sometimes no result was given.

KISSsoft - Gear calculation

SP3 **Pressure angle modification: Additional info**

For pressure angle modification: In the Comment the effective pressure angle is displayed.

SP3 **Missing graphic in gear pump report**

The graphic "Oil inlet from energy balance" was not shown in gear pump report.

SP3 **Contact analysis converging problems with toothform from DXF-Files**

The pair contact analysis had convergence problems for gears with read in toothform (DXF) due to problems with the normal angle, curvature radius and newton solver.

SP3 **Contact analysis for planetary systems crashing**

The contact analysis of planetary systems had sometimes system crashing problems with wrong calculated matrices.

SP3 **Grinding allowance tolerance**

Error message for too big grinding allowance tolerance corrected.

SP3 **Fine sizing with the calculation of transmission error**

Fine sizing of cylindrical gears with the calculation of transmission error was giving wrong result because the tooth form was not updated correctly. Also, the contact analysis for the basis solution was not done and showed no corresponding result.
Both the problems are fixed now.

SP3 **Measure over balls from the tooth form (MdK)**

Measure over balls (MdK) in the tab Tooth form calculation was wrong for odd number of teeth.

SP3 **Measurement grid report for bevel gears**

Fixed the normal vectors of the measurement grid report for bevel gear. Before, spiral angle change along the lead was not considered correctly.

SP3 **Message 'You did not introduce a grinding operation'**

Message 'You did not introduce a grinding operation' showed up too often.

SP3 **Wrong color scaling in graphical report of fine sizing**

The graphical report of the fine sizing function had a wrong color scaling which leads to missunderstandable results in the graphical report.

SP3 **Wear factor proposition based on Plewe; zeta.w according Plewe**

The proposition for a wear factor following Plewe was sligthly adapted to a more accurate interpolated Plewe curve.
The formula for calulation of zeta.w was changed (the formula in the Niemann book II (1983) is wrong; it is corrected in the Edition 2003).

SP3 **Report on eccentric modification**

Added description on eccentric modifications in the Report.

SP3 **No rotating rims in planetary contact analysis**

In the contact analysis of planetary system, now also systems with rotating rim can be calculated.

SP3 **Converting addendum and dedendum in reference profile gear only possible for own input**

Addendum and dedendum (coefficient) of a reference profile gear can only be converted if own input is selected.

SP3 **Calculation of specific sliding zetam**

The formula used for specific sliding zetam (for wear factor calculation according Plewe) was wrong (the formula is wrong documented in Niemann Book II, 1983). The value given by this formula has to be divided by eps_a.

SP3 **Master gear: RTmin, RTmax when using lay out of master gear tip diameter corrected**

When using the lay out option for master gear tip diameter, RTmin, RTmax (AGMA 2002)where calcualted too early, therefore sometimes sligthly wrong.

SP3 **Increase of file size solved**

The file size increased every time the file was saved after the fine sizing was used.

SP3 **Specific sliding graphics**

Specific sliding graphics shows no comment and markers when there is no backlash.

SP3 **Conversion of reference profile of worm wheel**

The conversion of addendum and dedendum coefficient of worm wheel was not correct when the setting of "Calculation with normal module instead of axial module" is selected.

SP3 **Load Spectrum with own input when using templates**

The combination of "own input" for a load spectrum and a template file for the default values was leading to wrong definition of the load spectrum.

SP3 **Base helix angle of hypoid gear**

The base helix angle of virtual gear for hypoid gear calculation was wrong.
It was calculated from nominal transverse pressure angle, not from pressure angle of corresponding flank.

KISSsoft - General

SP3 **Rules also in ASCII format**

Rules files can now be in ASCII format as well as in UNICODE 16bit-LE

SP3 **Rounding sharp corners**

For calculation of Hertzian stress corners like the one between tip and involute can be rounded to avoid singularties. If applicated, the calculation inserts now a Bezier spline instead of a radius if the edge angle is < 3° . Bezier splines solve well the requirements of tangential transmission and a well rounded corner.
The roundings (if applicated) are just used in the calculation of Hertzian stress. They are not shown in any graphical view.

SP3 **Contact analysis sometimes wrong**

In some situations the results of the contact analysis (with equal parameters) differed from each other, depending on the sequence of the calculations done before.
This bug has been removed.

SP3 **3D analysis on tooth**

In the graphics for the results of the contact analysis, there were some cases in which the results were not projected to the 3D tooth correctly.

SP3 **Circle Segments Insertion: bug found & removed**

Insertion of circle segments follows these steps:
1. Finding the common tangential points.
2. Inserting these points into the tooth form.
3. Removing points between the common tangential points.
4. Inserting curve points between the common points.
Now step 3 works well in any case.

SP3 **Reference profile**

Imrovements in the internal calculation of the reference profile.
Avoids a very small but unwanted rounding near the tip of the appropriating gear.
Affects contact analysis.

SP3 **DXF-Version R12 for Autocad14**

We write the line LWDISPLAY only for the DXF-Version R15, otherwise the files can't be opened in AUTOCAD14 anymore.

SP3 **Disconnecting Users from the Network License**

Disconnecting users from the network license (e.g. after a crash of a client computer) using the license tool didn't work properly.

SP3 **Additional units available**

Additional units [m²/N/1E+15] for wear factor and [tenth] for length (one-tenth of a thousandths of an inch) are available.

SP3 **Reports without tab stops are possible again**

Due to several requests a "legacy mode" for the reports was implemented. If the first line of the report template is
//NOTABSTOPS
the indentation in the reports is made with blanks instead of tab stops, and the font is Courier New.

SP3 **Reports work with Asian Windows**

Report templates that were still in ASCII were truncated when using Windows with Asian localization. All ASCII templates are replaced with UNICODE versions now.

KISSsoft - Graphics

SP3 **3D analysis of planetary system**

The display of the flanks in the planetary system has been changed, so that points without contact are not drawn (before they were displayed in blue).
Additionally, it's now possible to rotate all gears in the planetary system.

SP3 **Saving graphics as .jpg**

Graphics could not be saved in jpg format.

SP3 **Bug in assembly drawing for internal gears**

The drawing of internal gears was not correct, when no thickness for internal gears was specified.

SP3 **Bug in 3D graphic of planetary system**

In the graphic "3D geometry" -> "Tooth system" for the planetary gears, the deviation and inclination error for the axis of the last planet was also applied to the ring. This only concerns the graphical display.

SP3 **Wrong side of gear tooth displayed**

In case of internal gears, in the graphic "Contact analysis"->"Stress distribution on tooth", the wrong side of the tooth was displayed. This is only a mistake in the display and has no effect on the calculation.

SP3 **KISSsoft crashes if in kiss.ini the 'calconopen' flag is set to 0 and a graphic was opened**

If the calconopen flag in the kiss.ini was set to 0 and a graphic was open, without executing the calculation, KISSsoft was crashing.

KISSsoft - Pin calculation

SP3 **Sizing of diameter wasn't active**

The sizing of the diameter for full pins wasn't possible anymore, the sizing button wasn't active.

KISSsoft - Shaft calculation

SP3 **Bearing friction loss**

The drag component of the bearing friction loss was calculated with a wrong oil level. This affected the total amount of bearing friction moment, and consequently the friction power.

SP3 **Symbols for coupling/motor and interference fit have changed**

The symbol for coupling/motor now considers the effective coupling diameter if defined. The symbol for interference fit has changed too, so that the element can still be selected if a coupling and an interference fit are at the same position.

SP3 **DIN 743: coefficient K1(deff) for CrNiMo-Steels**

DIN743-2, picture 13, curve 3: For CrNiMo - case carburized steels - now the formula 12 instead of formula 13 is used.

KISSsoft - Splines calculation

SP3 **ANSI92.1 Flat root side fit : Tolerances of Major diameter d0 sligthly adapted to table 5 to 13**

ANSI 92.1: For flat root side fit: Tip diameter tolerance sligthly changed. There is a small difference between the tolerances given in table 107 and in the tables 5 to 13. We changed now to values as documented in tables 5 to 13.

KISSsys - General

SP3 **Load spectrum for non-administrators**

Improved load spectrum definition for non-Administrators.

SP3 **KISSsys user functions code saving**

The code saving is now faster.

SP3 **Show message when reaching maximum number of users**

A message is shown when the maximum number of users (license condition) is reached.

**CHANGELOG SERVICE PACK 2**

KISSsoft - Bearing calculation

SP2 **Bearing (stand alone version W51): Outer ring rotation**

This affects only the stand alone inner geometry bearing calculation (W51): When a connection to a shaft file was used, and for the selected bearing's outer ring a misalignment was defined, this misalignment was taken into account twice.

KISSsoft - Gear calculation

SP2 **Documentation of YM in duty cycles**

YM in duty cycles was only documented correctly for element no.1, for all the other elements always 1.0 was documented (but YM was used correctly in the calculation).

SP2 **Lifetime and trasmittable torque report**

Calculations with duty cycles: Lifetime and trasmittable torque report was not made, showing message 'not consistent', when 'Consider load spectrum' was deactivated.

SP2 **Powerloss calculation of gear chains in gear pair contact analysis**

The powerloss calculations was not working for the gear chains in the pair contact analysis.

SP2 **Planet contact analysis/KHβ with carrier deformation**

The complex movement of a planet carrier was not considered correctly when all of the following conditions were true:
1. planet deformation was defined from shaft file
2. carrier deformation was defined from own input
3. left flank of the meshing under consideration was in contact

KISSsoft - General

SP2 **Update of Database**

Due to an error in the conversion the update of the database from 2012 or an older version leads to corrupted character strings in the copied data sets.
If you already updated the database rerun the update and confirm the overwriting of existing data sets. In case you have many data sets added to your database you can download the original files for 2013 from www.KISSsoft.ch/public/database.zip. Extract the files into your kdb directory overwriting the updated files. Attention: All user data sets added in release 2013 will get lost. Contact our support team if you have questions about this. We apologize for any inconvenience caused by this error.

SP2 **Saving database results in program crash**

If you add a data set in the tapered roller bearing table saving the database will result in a crash or a frozen program. Other tables might also be affected.

SP2 **Calculation of curvature of toothforms imported via dxf (only internal gears)**

The normals and curvatures as shown in the 2D graphics of imported toothforms had the wrong sign for internal gears if defined by arcs.
Affects contact analysis.

**CHANGELOG SERVICE PACK 1**

KISSsoft - Bearing calculation

SP1 **Stress/lifetime calculation for roller bearings**

This affects only the "Rolling bearing ISO/TS 16281" module: The stress and lifetime calculation for geometric splitting of rollers was wrong.

KISSsoft - CAD interface

SP1 **Settings of calculation file**

The date and time from the calculation file wasn't read correctly, when the check, if the model is actual, was made.
(Autodesk Inventor, NX, SolidEdge, SolidWorks)

KISSsoft - Gear calculation

SP1 **Eccentric Crowning and Profile barelling was not selectable**

Eccentric Crowning and Eccentric Profile barelling was not selectable in the profile optimization dialog of the gear cylindrical gear calculation.

SP1 **Sorting Solutions of Profile Optimisation**

Sorting of solution id's in profile optimisation dialog of cylindrical gear calculation was improved.

SP1 **Toothform update problem**

Tooth form (in the graphic) was not updated properly while selecting a solution in rough- and fine sizing dialogs of the gear calculation.

SP1 **Symbols in varying quality input window**

Fixed the symbols for helix form deviation and Single normal pitch deviation of DIN 3961 in Varying quality input window.

SP1 **Flank overlap of 3D bevel gear**

Flank overlap in property window of 3D bevel gear system was shown in wrong unit.

SP1 **2D geometry of bevel gear**

2D geometry for inside and outside tooth ends was not avaiable, when topological modification are used.

SP1 **STEP file in unicode**

Fixed saving 3D geometry in STEP format with unicode file name. Parasolid formats (X_T, X_B) are still not working.

SP1 **Conditions for fine sizing of cylindrical gear**

1. Enable "Calculate geometry only" if the main calculation method is "Only geometry".
2. Disable "Suspend results which do not meet required safety factors" if the main calculation method is "Only geometry" or "Static calculation".

SP1 **Tip relief factor**

Tip relief factor (scoring and micropitting): Ca value used is set to 0, if Ca is much too big (Ca > 2 * Ceff). Report had some errors in printing 'Ca is optimal'.
Ca is only considered as 'optimal' if the Flag 'Consider Tip releif as optimal' is set.

SP1 **Method DNV**

Calculation according DNV: Additional restriction for YC factor implemented.

SP1 **Cast steel**

Cast in ISO6336-3: for YrelT formula 58 instead of 59 was used

SP1 **Root form diameter gear 2**

Calculation of dFf of Gear 2 with Protuberance was sometimes wrong, when Gear 1 did not have a Protuberance.

SP1 **Wrong position of slices in contact analysis**

For very small number of sections chosen in the tab contact analysis (Accuracy of calculation: Own Input), the position of slices where wrong. This didn't affect the calculation, but the 3D-Graphics.

SP1 **Contact analysis converging problems for very high contact ratio**

For gear meshings with very high contact ratio (e.g z1=158, z2=-159) the contact analysis had converging propblems. This is fixed now.

SP1 **Contact analysis with shafts**

Sometimes the cross sections defined in a shaft file affected the stability of the calculation.

SP1 **KHβ calculation according to ISO 6336-1, Annex E**

In a gear chain calculation module (3 and 4 gears), the KHβ was calculated with the deformation (fΣβ/fΣδ) of the first pair.

SP1 **KHβ calculation according to ISO 6336-1, Annex E**

The iteration of gear load according to Annex E is now in addition activated for planet systems (tab "Factors").

SP1 **Safety Hardened Layer SEHT for gear 2 not displayed**

When using duty cycles: Safety of Hardened Layer SEHT for gear 2 was not displayed.

SP1 **Kγ with Duty cycles (Report)**

Kγ and YM was not printed correctly in the report, when duty cycles with dat-files from data base were used.

SP1 **Warning for [tg/rg]**

If grinding notch data [tg/rg] is set, without using a grinding tool, a Yes/No warning is generated.

KISSsoft - General

SP1 **Colon punctuation (:) in text fields**

Colon punctuation (:) is again possible to be used in text fields. (important to define paths)

SP1 **Floating license miscounts active users**

When using KISSsoft with a floating license (network license) the number of concurrent users logged in is not counted correctly. Especially installations with only one concurrent access right are blocked completely.

SP1 **Reference Profile**

Reference profiles are the standard tools for final treatment or modificated ("Corrected") gears if choosen generating grinding, not if form grinding.
Reference profiles have a sharp tip and a rounded root. The rounding is generated in the normal plane by the grinding tool´s rhoaP0.
The sharp corner is the crossing point of the tangent of the last point generating the involute with the tip.

SP1 **Grafik of racks in cubic and quadratic interpolation**

Cubic or quadratic interpolation is unsuitable for racks.
In cases it is selected the switch is internally set to polynomial.

KISSsoft - Graphics

SP1 **3D analysis of planetary system**

In the 3D graphics after contact analysis of planetary systems, the flanks were not always drawn in the correct position.

SP1 **3D face gear assembly**

The assembly in the 3D tooth system was not correct with radial offset and in some cases with helix angle.

SP1 **Kinematic graphic not shown**

Kinematic graphic was not shown for planetary gear system calculation.

SP1 **Unit conversion of 3D-Data**

Unit conversion of 3D data export was not proper. If the user exported 3D-Graphics, such as normal load, the units were not considered.

SP1 **Standard view of tooth form**

The standard view was set to the whole gear. Now it will adapt to the drawn part, to fit for example the half tooth for export.

KISSsoft - Shaft calculation

SP1 **DIN 743: coefficient KV linear interpolate**

DIN743-2, Table 4: If the diameter is bigger than 40 mm, the coefficient KV will be set based on linear interpolation to 1.0

SP1 **DIN 743: beta(dB), K2,and K3 for square groove**

The coefficients beta(dB), K2,and K3 for square groove was calculated with the outer diameter instead the smaller diameter.

SP1 **DIN 743: KF for some types of notches**

For experimental evaluated notch factors, all KF were set to 1, this is now corrected.

SP1 **FKM: For austenitic, stainless steel S-N-curve type II**

For austenitic steels (stainless) weren't set to S-N-curve type II.

SP1 **The root diameter for splines according DIN 5480**

The root diameter for a spline cross section according DIN 5480, selected in the list, was wrong.

SP1 **Solver stability with classic bearing method**

In some cases the shaft calculation is converging, but when you repeat the calculation, the loads in the bearing are drastically changing. In such cases a quick check to control, is to calculate with a different node density (eg. from high to normal).

SP1 **Eigenfrequencies**

The eigenfrequencies (when defined) were not calculated when the "Consider weight" flag was not set.

SP1 **Approximation of inner geometry**

The approximation algorithm of the inner geometry of bearings, for which no manufacturer data exist, is significantly improved. This can lead to different results, depending on the bearings used.

SP1 **Point masses on shaft nodes**

Point masses on the shaft nodes were considered twice. This influenced the force distribution (due to the mass weight) and the eigenfrequencies results.

SP1 **No strength calculation**

It wasn't possible to set the menu item "no strength calculation" in the strength tab.

KISSsys - General

SP1 **Unicode characters**

Some Unicode characters are not shown correctly in tables.

SP1 **Internal gears positioning angle**

The positioning angle for internal gears has to be calculated according to the planet contact analysis.

SP1 **3D graphic viewer: Power direction**

The power direction in the 3D graphic viewer is not shown.

SP1 **kSysConnectionRollerBearing and kSysConnectionBearing clearance**

A reference to the variable 'clearance' is missing.

SP1 **Contact analysis calculation for a planetary system**

The shafts files are not generated automatically when executing the contact analysis calculation for a kSoftPlanetaryGearSet.

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