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KISSsoft AG
Rosengartenstrasse 4
8608 Bubikon
Switzerland
Tel: +41 55 254 20 50
Fax: +41 55 254 20 51
www.KISSsoft.AG
KISSsys Template for a Load Spectrum
25.07.2014 2 / 22
General Information
KISSsys allows user to build a complete gear box or drive train in a single file. Calculations can be then
performed easily for the whole system using KISSsoft modules. In case of several load cases (load spectrum
or duty cycle) KISSsys can be used to make an analysis of a complete system using this load spectrum. This
can be done with the help of a special table or template called “301-LoadSpectrum”.
Using this template user is able to define load cases for the system and to perform the calculation for all the
components with the user defined load spectrum. The lifetime calculations with spectrum are available for the
same components as in KISSsoft level. The safety factors and lifetimes of different gears and bearings can
be calculated using the spectrum. Additionally shaft fatigue safeties can be calculated using spectrum
(DIN743). The rest of the components (where the calculation with spectrum is not possible) are considered
to only as check of a “weakest” component.
The load spectrum template functionality allows following types of calculations:
1) Calculation of a gearbox or a transmission with a single load level taken from the load spectrum. 2) Calculation of a gearbox or a transmission with a load spectrum results only with a complete
spectrum. 3) Calculation of a gearbox or a transmission with a load spectrum including intermediate results of
each load step and results with a complete spectrum. 4) Calculation of a gearbox or a transmission with user defined load (current load)
This document describes how to implement and to use the functionality. There is a possibility to extend the
spectrum with additional values or setups, this document will also describe where and how user is able to do
this (requires administrator to be activated).
25.07.2014 3 / 22
Contents
1 What can be calculated ............................................................................................................................ 5 1.1 The following can be calculated ..................................................................................................... 5 1.2 Available calculations ..................................................................................................................... 5 1.3 How to calculate ............................................................................................................................. 5
2 Requirements ........................................................................................................................................... 5 2.1 KISSsoft and KISSsys modules ..................................................................................................... 5
3 Flow chart................................................................................................................................................. 6 4 Import load spectrum functionality ........................................................................................................... 7
4.1 Open templates .............................................................................................................................. 7 4.2 Copy function to tree structure ....................................................................................................... 8
5 Functionality ............................................................................................................................................. 9 5.1 General ........................................................................................................................................... 9 5.2 Functions ........................................................................................................................................ 9
5.2.1 Setup .......................................................................................................................................... 9 5.2.2 Calculation .................................................................................................................................. 9
6 Setup ...................................................................................................................................................... 10 6.1 General ......................................................................................................................................... 10 6.2 “Define” “DefinitionDialog“ ....................................................................................................... 10
6.2.1 Manual definition ...................................................................................................................... 11 6.2.2 Read from file ........................................................................................................................... 11 6.2.3 Spectrum type as percentages ................................................................................................. 12 6.2.4 Spectrum type as absolute values ........................................................................................... 12 6.2.5 Attaching the load spectrum information to a load input and/or output .................................... 13 6.2.6 Additional data in spectrum ...................................................................................................... 13
6.3 CreateSpectrum ........................................................................................................................... 13 6.4 ExportSpectrum ............................................................................................................................ 13
7 Calculations............................................................................................................................................ 13 7.1 “Calculate” “CalculationDialog” ................................................................................................ 13
7.1.1 Single load level from spectrum ............................................................................................... 14 7.1.2 Load Spectrum (fast) ................................................................................................................ 14 7.1.3 Load Spectrum with details (slow) ............................................................................................ 14 7.1.4 Current load settings ................................................................................................................ 14 7.1.5 KISSsoft results ........................................................................................................................ 15
7.2 External files with spectrum .......................................................................................................... 15 7.2.1 Lifetimes and safety factors according to the calculation ......................................................... 15 7.2.2 Damages with Spectrum calculation ........................................................................................ 15
7.3 Special remark .............................................................................................................................. 16 8 Variables with results ............................................................................................................................. 17
8.1 Bearing results .............................................................................................................................. 17 8.2 Gear results .................................................................................................................................. 17 8.3 Shaft results .................................................................................................................................. 17
9 Functions inside the calculations ........................................................................................................... 19 9.1 Calculation functions inside template ........................................................................................... 19
25.07.2014 4 / 22
9.2 Formulas used in lifetime and damage calculation ....................................................................... 19 9.2.1 Lifetime ..................................................................................................................................... 20 9.2.2 Damage .................................................................................................................................... 20
10 Modifying the functionality .................................................................................................................. 21 10.1 Gear consideration ....................................................................................................................... 21 10.2 Additional data .............................................................................................................................. 21 10.3 Debug ........................................................................................................................................... 22
25.07.2014 5 / 22
1 What can be calculated
1.1 The following can be calculated
Table 1 Available calculations
Element Safety factors Lifetime
Spur-, Helical-, Planetary- and
Crossed helical gears
SF, SH, SSint, SB LF and LH per each gear
Bevel gears SF, SH, SSint LF and LH per each gear
Bearings fs (static safety factor) Lh (according to selected
method)
Shafts SD (fatigue) and SS (static) in the
defined cross sections
-
Other components Weakest component per pin Weakest component per pin
1.2 Available calculations
Calculations can be performed with
selected load level (single level)
according to the spectrum (fast, no details of the pin values)
complete calculation results with spectrum and values per each pin
1.3 How to calculate
Calculations are performed using KISSsoft and KISSsys functionalities. All the results according to the
spectrum (final results) are calculated using KISSsoft spectrum functionalities (except for bearing modules).
The results per pin are calculated as well using the KISSsoft calculations with normal settings (single load)
and are saved in arrays for latter use. After the calculations the results are written in text- or other types of
files and exported from the program. The arrays with detailed results are deleted after the export as a default,
but can be saved if “debug” flag is set on manually (user definition under the functionalities see chapter 10.3).
2 Requirements
2.1 KISSsoft and KISSsys modules
To perform the calculations the following KISSsoft modules are required additionally to at least one strength
calculation method for the elements which are needed to be calculated.
Gear lifetime and safety factors with load spectrum:
ZZ1 (Load spectra) including modules Z16, Z16a, Z18, Z18a
Shaft calculation with load spectrum
WA8 (Load spectra) including modules W01s, W06s
KISSsys full version for template implementation and setup
SYS module K11c
25.07.2014 6 / 22
3 Flow chart
Yellow fields are only for single load case. Gray fields are only for load spectrum case
Definition
Manual Read from
file
Calculations
With spectrum Single load
level
Case
number
Details
Set load step
Kinematics
KISSsoft
Save
Messages
END
Load Spectrum
table
no
yes
Create
element files
KISSsoft
Nof Steps
Save
Nof Steps
25.07.2014 7 / 22
4 Import load spectrum functionality
4.1 Open templates
The template for the load spectrum calculation is not included in the default templates. It can be downloaded
from (http://www.kisssoft.ch/english/downloads/KISSsysTemplates.php) and saved for the latter use. User
receives a file “301-LoadSpectrum.ks”. This file can be copied e.g. into the installation directory of KISSsoft
as shown below.
Figure 1. Add the templates to the installation directory of KISSsoft
An existing KISSsys model can be then opened or a new model can be created for the load spectrum
calculation to be added. The administrator mode needs to be activated using “Extras/Administrator” as shown
below to be able to add new functionalities.
Figure 2. Open a model and change to administrator mode
25.07.2014 8 / 22
Then the template can be loaded using “File/Open templates…” and choosing the template file “301-
LoadSpectrum.ks”. The template will be imported as shown below. The template contains only one table
element “LoadSpectrum”, which includes all the functionalities.
Figure 3. Importing templates "301-LoadSpectrum.ks"
4.2 Copy function to tree structure
Now that the table “LoadSpectrum” of the template “301-LoadSpectrum.ks” is available, copy and paste the
table “LoadSpectrum” from the “Templates” to the “Model”. It is possible to change the name of the table in
this process.
Figure 4. Copy and paste the table "LoadSpectrum" from the "Templates" to the "Model"
After this at least function “DefinitionDialog” needs to be run once, before switching off the administrator mode
again (See more details in chapter 6.2).
25.07.2014 9 / 22
5 Functionality
5.1 General
User needs to define at least three things for the load spectrum (Frequency/Hours, Torque and Speed). Input
values can be given to the desired “kSysSpeedOrForce” point (a power input or a power output) and values
can be entered as absolute values or as fractions of nominal load.
Note that values can be only given for those “kSysSpeedOrForce” points where these values are constrained.
User may select if frequencies (fractions of one) or hours are defined in the spectrum. In case if frequencies
are defined also total required lifetime needs to be set. If hours are to be defined, total operational (required)
lifetime and frequencies per step are calculated automatically.
In case if there is also a gear selection (e.g. vehicle gear boxes) to be considered user may define this in the
“DefinitionDialog”. Additionally to this extra values can be considered in the spectrum. See last chapter of
how to do the required setting in this case.
5.2 Functions
“LoadSpectrum” table includes several functions to operate. Some of the functions are for definition, some to
perform calculations and some to write results. Order to operate functions in normally as following:
5.2.1 Setup
1. DefinitionDialog 2. CreateSpectrum 3. ExportSpectrum
5.2.2 Calculation
1. CalculationDialog 2. SaveLoadValues (initialization) (hidden) 3. SaveResultValues (initialization) (hidden) 4. SetLoad (hidden) 5. SaveLoadValues (load spectrum loop) 6. SaveResultValues (if needed in load spectrum loop) 7. CalculateWithSpectrum (hidden) 8. WriteResults (hidden)
Hidden functions are automatically operated during the calculation and it is not recommended to use these
manually. (Note: if you are still in administrator mode, you will see additional functions (hidden), we therefore
recommend to switch of the administrator mode after the definition of the spectrum)
25.07.2014 10 / 22
6 Setup
6.1 General
The following functions are available to do the setup of the spectrum (their use is described in the sections
below):
Table 2 Functions for load spectrum setup
Name Purpose
DefinitionDialog This function will define types and style of data used
in the spectrum. It is recommended not to use this
function after the first definition if you do not want to
change something. When this function is used
and “OK” pressed data in spectrum table is
initialized if you have administrator mode
activated!!!
CreateSpectrum This function can be used in any time to read in
spectrum data from a file
ExportSpectrum The load spectrum information can be written in a
“*.csv” file including the header.
6.2 “Define” “DefinitionDialog“
First point is to create a load spectrum. That can be done through definition dialog which is called
“DefinitionDialog”. Executing the function a dialog will appear to do the setup for the data.
Figure 5. Load spectrum definition dialog
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Table 3 Load spectrum definition dialog, fields
Field Purpose
Definition: Define load spectrum manually or import from a
“*csv” - file.
No. of Steps: In case of manual definition number of load steps to
be given. (Inactive if import from a file selected)
Spectrum type (speed and torque): Select definition of Torque and Speed as absolute
values or percentages/fractions of user defined
nominal load. (Note! If you want to define spectrum
as absolute values take care of signs for speed and
torque / direction of rotation and Input or Output)
Duration type: Select if Frequency (percentages/fractions of one) or
absolute operation hours are to be defined
Required lifetime [h]: Total required lifetime (operational time) needs to be
given if duration type “Frequency” is selected
Speed defined to: Select from list “SpeedOrForce” point where you
want to define speed for spectrum. (Only speed
constrained points can be selected)
Torque defined to: Select from list “SpeedOrForce” point where you
want to define torque for spectrum. (Only torque
constrained points can be selected)
Consider gears shifts: Select if there are gear / power flow shifts in the
model
No. of additional columns Set numbers of how many additional data are
defined in the spectrum
6.2.1 Manual definition
If “Manual definition” is chosen for field “Definition:” and “No. of Steps:” is defined, you will see empty load
spectrum table with given number of load steps. User must then manually type in values for all steps.
Figure 6. Left: Undefined load spectrum. Right: Defined load spectrum
Note! Values for frequency must add up to 1.00. In case of “percentage” input selected torque and speed
definition must be fraction of nominal values and if inputs as “absolute” values selected define real values for
torque and speed with correct signs.
6.2.2 Read from file
If “read from file” is selected for field “Definition:” user must pick up ready made file (*.csv). The file dialog is
not automatically shown and needs to be manually opened by executing the function “CreateSpectrum”- from
the table.
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Figure 7. Text file with load spectrum must be selected
A text file with a load spectrum must have the following structure: Semicolon (;) as a separator of the fields,
at least three values per line in order of “frequency/hours;torque;speed”. After that the file should contain
gear name definition if needed and then all the additional values. See example shown below. This file can be
directly generated from the Excel when saving format is selected to “*.csv”. Note order of the data in the file
must be the same as seen in the table header after the definition.
Figure 8. Example of spectrum definition as a text file (*.csv)
Spectrum is automatically created according to the selected file and will appear to main window as seen in
Fehler! Verweisquelle konnte nicht gefunden werden. Right. This file should not contain any other
information e.g. no headers of the columns. It is always possible to read in a file later even if manual definition
is selected at the beginning. The length of the spectrum can also vary in different files and is not needed to
ne adjusted from the “DefinitionDialog” manually.
6.2.3 Spectrum type as percentages
If spectrum should be defined as percentages, user must enter values in table (or in file to be imported) as
fractions of nominal load. (e.g. 0.5 means that calculation is made with 0.5*nominal value or 1.2 means that
calculation is made with 1.2*nominal value.)
6.2.4 Spectrum type as absolute values
In case of definition with absolute values user must enter values in table (or in file to be imported) as real
values without unit (e.g. 100 (Nm), 1000 (rpm)). It is very important to take care of signs of values in this case,
because sign of the speed defines direction of rotation. Message box of reminder of that will also appear.
25.07.2014 13 / 22
Figure 9. Remember signs of load spectrum values
6.2.5 Attaching the load spectrum information to a load input and/or output
Use the fields “Speed defined to:” and “Torque defined to:” to define at which “kSysSpeedOrForce” element
the speed and torque information as given in the load spectrum will be used.
6.2.6 Additional data in spectrum
Normally, the calculation of the load spectrum can be run when frequency, torque and speed are defined.
There may anyway be cases where the model needs some extra definition (e.g. another input speed or
activation of extra connection). In this case user can add additional columns to the spectrum to add these
conditions. The additional variable names can be defined using the dialog appearing. Only the valid variable
names are accepted. After the definition the variable names will appear in the table definition. Note:
Afterwards the setup for the values must be done in the function “SetLoad”!
6.3 CreateSpectrum
This function can be used to read in spectrum data from a ready made file (*.csv). The file dialog is not
automatically shown even if “read from file” is selected in “DefinitionDialog” and needs to be manually opened
by executing the function “CreateSpectrum”- from the table. Note! Be careful that data is defined similarly in
the file as in the definition dialog. If all the information is not available in the file fields are left empty. For more
info see chapter 6.2. It is always possible to read in a file later even if manual definition is selected at the
beginning. The length of the spectrum can also vary in different files and is not needed to ne adjusted from
the “DefinitionDialog” manually.
6.4 ExportSpectrum
The load spectrum information can be written in a “*.csv” file including the header. If this file needs to be read
back to the spectrum user have to modify it so that the header values are removed, otherwise values are not
set correctly to the spectrum.
7 Calculations
7.1 “Calculate” “CalculationDialog”
Once the spectrum has been set up as shown above, calculations can be executed using function
“CalculationDialog” under “LoadSpectrum” from tree structure. The following dialog will appear to be able to
select different calculation types:
Figure 10. Calculation type selection dialog
Table 4 Calculation types that can be selected in using "CalculationDialog"
List position Purpose
Single load level from spectrum User may select one load step out of the spectrum
and calculate with that value. (Note! After this
calculation new nominal load values are according
25.07.2014 14 / 22
to selected line) load case number needs to be set
in the filed below the selection
Load Spectrum (fast) Calculates model with given spectrum. Only results
with complete spectrum are shown. Calculation is
relatively fast, because only kinematic calculations
are performed per each step. The KISSsoft results
are saved at the end.
Load Spectrum with details (slow) Calculates model with given spectrum. After every
step KISSsoft calculations are called and
intermediate values are saved. Calculation is slow,
because all KISSsoft calculations are performed per
each step
Current load settings Calculation with single load that user has defined for
model. This does not really use load spectrum for
calculation, but can be used instead of separate
calculation function for single load stage.
Calculation procedure is also ready made and
stores results to the same variables as with load
spectrum calculation.
7.1.1 Single load level from spectrum
With this calculation user should select one line/step from load spectrum model to be calculated as a single
load. In this case “nominal” speed and torque are set according to the selected load step, means that current
values in selected spectrum definition points are considered as nominal or reference values.
Figure 11. Notifications of possible change of nominal load values
7.1.2 Load Spectrum (fast)
With this calculation method results are calculated using the complete spectrum. Load according to the each
load step is set on and after that kinematic calculation is performed. Load values of the components are
saved. At the end load spectrums for every calculation are created and KISSsoft calculations are performed
using these spectra.
7.1.3 Load Spectrum with details (slow)
This calculation method performs a damage accumulation using Miner rule over the load spectrum. Safety
factors for gears are calculated according to spectrum as well as lifetimes for gears and bearings. Single
lifetimes of every step are also saved for later use. Damage values for each load step in the load spectrum
are also calculated. After calculation user defined nominal load is set back to model.
Before the calculation user should take care of application factors for gears (KA). These should be set to 1,
but also different values are possible depending on place of the gears in the power train.
7.1.4 Current load settings
The program calculates the model with nominal load which user has defined for model. The results for
lifetimes and safety factors are available. It is recommend to use this calculation method instead of KISSsys
default calculation method, to ensure that results will be presented in same variables as with other calculation
methods and are automatically written out.
25.07.2014 15 / 22
7.1.5 KISSsoft results
After using any of above described calculations results are saved in default KISSsys values. E.g. gear safety
factors SF1 and SH1 are according to the spectrum if spectrum calculation was selected.
7.2 External files with spectrum
After the calculations external result files are created for more detailed results investigation. These files are
located in the project folder. Files are called “Results.csv” and “Results.txt” including all the calculation results.
Further files “Damages.csv” and “Damages.txt” are created to show damages of gears and bearings if “Load
Spectrum with details (slow)” is selected.
Figure 12. Information about external files created
These results files are example files and users are able to adapt the content and appearance of the file by
changing the template function for the files. This anyhow requires some in depth knowledge how to do it.
7.2.1 Lifetimes and safety factors according to the calculation
An external “Results.csv” file is automatically created if calculation is performed with the load spectrum. In
this file, all the safety factors and lifetimes for each step are shown. Also frequency, torque and speed values
for every gear stages are shown. This file is located in the project folder.
Figure 13. Lifetimes and safety factors as listed
7.2.2 Damages with Spectrum calculation
External “Damage.csv” file is automatically created if calculation is performed with the load spectrum in
details. In this file, the partial damages for all steps in the load spectrum are listed. This file is located in the
project folder.
25.07.2014 16 / 22
Figure 14. “Damages.csv” with partial damages, opened in Excel
7.3 Special remark
In case of centrical load elements is present in the calculation model the load and torque values for this
element are behaving linearly between all the directions. This is due to the fact that load values Fx, Fz, Fy,
Mx, Mz cannot be varied during the spectrum calculation individually and can therefore cause some problems
especially if they are expressed with formulas in KISSsys.
25.07.2014 17 / 22
8 Variables with results
8.1 Bearing results
The bearing lifetimes with nominal load are saved to the variables (Lh1, Lh2, Lh3 and Lh4). Following new
results are available with the load spectrum. The same variables are also available under each bearing
element and results are saved in the same manner as under calculation module, but including the values for
a single bearing only.
Table 5 Variables for bearing results
Variable Type Description
Lifetime Array Total lifetime according to spectrum of bearings.
Lifetime[0] (1st element) shows the frequency of
calculation and should be always one after the
calculations. Lifetime[1] (2nd element) is the lifetime
for bearing1, Lifetime[2] (3rd element) is the lifetime
for bearing2 and so on.
lifetimes Array Single lifetimes of every load spectrum step. Each
array element include lifetimes of all the bearings in
the calculation
safeties Array Single static safeties of every load spectrum step.
Each array element include safeties of all the
bearings in the calculation
Forces Array Includes the bearisng forces Fr (Fx, Fz) and Fa (Fy)
of the every step.
8.2 Gear results
The gear safeties with nominal load are saved to variables (SF1, SF2, SH1, SH2…) and lifetimes to the
variable lifetime. Following new results are available with the load spectrum.
Table 6 Variables for gear calculation results
Variable Type Description
Lifetime Array Total lifetime according to spectrum of all gears.
Lifetime[0] (1st element) shows the frequency of
calculation and should be always one after the
calculations. Lifetime[1] (2nd element) is the lifetime
for root of the gear1, Lifetime[2] (3rd element) is the
lifetime for flank of the gear1, Lifetime[3] (4th
element) is the lifetime for root of the gear2 and so
on.
lifetimes Array Single lifetimes of every load spectrum step. Every
element in array has all lifetimes for whole gear pair
(roots and flanks) in same order as in variable
Lifetime excluding the first index.
safeties Array Single safety factors of every load spectrum step.
Every element in array has all safety factors for
whole gear pair (roots and flanks) in same order as
in variable Lifetime excluding the first index.
8.3 Shaft results
Safeties of the defined cross sections are saved under variables SDX, SSX, RDX and RSX.
25.07.2014 18 / 22
Table 7 Variables for shaft results
Variable Type Description
RXY Real (default variable) Result safety X [%] (S/Smin) at cross-section Y.
X=D: fatigue, X=S: at yield point, Y from A-J
SXY Real (default variable) Safety X [%] (S) at cross-section Y.
X=D: fatigue, X=S: at yield point, Y from A-J
safeties Array All safety factors fatigue and static for cross sections
over the load spectrum
See further chapter 10.3 Debug for information how to save these values.
25.07.2014 19 / 22
9 Functions inside the calculations
9.1 Calculation functions inside template
Load spectrum calculation includes a lot of hidden functions, which are used to calculate everything while
calculations are executed. Following table explains briefly what all this functions are for.
Table 8 Functions in LoadSpectrum
Function Explanation
DefinitionDialog Dialog for defining load spectrum to select
necessary inputs for spectrum.
CreateSpectrum This function creates values for the spectrum. In
case of manual definition values are set to zero. If
this function is called separately user can read
values from a file and spectrum is filled according
to the data from the file
ExportSpectrum User can write spectrum table to an external “*.csv”
file
CalculationDialog Dialog to select calculation method. According to
selection further functions will be executed.
SaveLoadValues If this function is called with parameter -1 it will
initialize new variables “Loads” for the elements to
save load values per each load step. In spectrum
calculation this function will save component load
values after each step
SaveResultValues If this function is called with parameter -1 it will
initialize new variables “safeties” and “lifetimes” for
the elements to save intermediate results values
per each load step. In spectrum calculation this
function will save component results values after
each step
SetLoad This function will set correct loads according to the
selection or per each load step. If gear selections
are activated or there are additional columns in the
spectrum, the settings for the data handling must be
done here
GearSingleLife Operated for every load spectrum step to calculate
single lifetime for gear with load conditions
according to current step. Results save for later
use. Called from function “LifeWithSpectra”
CalculateWithSpectrum Calculates lifetimes, safeties and other values
according to the spectrum
WriteResults Writes results according to the calculations in
external files “Results…” and “Damages…” These
files are saved in the project folder.
WritekSoftReport This function will automatically create whole
KISSsoft documentation after each calculation
9.2 Formulas used in lifetime and damage calculation
Following formulas are used to do the lifetime and damage calculation for the gears and bearings. Palmgren
– Miner - rule is used in the calculations.
25.07.2014 20 / 22
9.2.1 Lifetime
The total lifetime of a component is calculated from the summarized method from the single lifetimes and time
fractions on each bin.
i hi
htot
Li
L1
(9-1)
9.2.2 Damage
The total damage of a component is calculated against the total lifetime of the component and required lifetime
compared to the bin lifetimes. When the total damage of the each component equals to 100% over the whole
spectrum then failure is expected.
Against component lifetime
hi
htot
iL
LiD
1
i
itot DD (9-2)
Against required lifetime
hi
hreq
iL
LiD
i
itot DD (9-3)
25.07.2014 21 / 22
10 Modifying the functionality
10.1 Gear consideration
If the load spectrum includes the gear selections, a function to do this can (or needs) to be added in the
“SetLoad” function in the table. In case if functionality is not defined there will be a message to do so.
Figure 15. Gear selection functionality needs to be defined here
E.g. using other special template called “305-SpeedTable” gear definition can be defined as follows:
Figure 16. Example of definition using "SpeedTable"
User may also call hear some own functionalities to do a gear selection or write new function here to do it.
10.2 Additional data
In case of additional data is set use the same function “SetLoad” to define functionality for the additional
values. Because there are basically no limitations for these values functionality needs to be set manually as
needed case by case.
25.07.2014 22 / 22
Figure 17. Area in "SetLoad" function to define functionality for additional data
10.3 Debug
With the load spectrum calculation user can have some more results compared to single load calculations.
Additional to the total safety factors and lifetimes, results for lifetimes and damages of single steps are
available. See chapter 7.3 for the names of these variables.
As a default all these values are deleted after results are written and exported, but it is possible to change
local variable “debug” inside function “CalculationDialog”. If the values is set different to zero (e.g. debug =
1;) then variables are not deleted and can be searched after the calculations.
Figure 18. Saving the intermediated results with debug value different to zero (0)