ALTADataSet.AddStressDefinition: Difference between revisions

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{{Template:APIClass|ALTADataSet Class|ALTADataSet}}
{{Template:API}}{{Template:APIBreadcrumb|.[[ALTADataSet_Class|ALTADataSet]]}}


{{Template:ALTADataSet.AddStressDefinition.Cmt}} The number of stress values used in subsequent calls to AddFailure, AddSuspension, etc. must be equal to the number of stress definitions in the data set (e.g., before you can add a failure time obtained with two stresses, you must add two stress definitions).


The same functionality is access via the Add/Remove Columns window in ALTA.
<onlyinclude>Adds a stress type to the data set.</onlyinclude>


== Syntax ==
==Syntax==
<ul>
'''.AddStressDefinition'''(''Name'', ''StressRelation'', ''UseStress'')
<li>
AddStressDefinition(
{{APIName|Name}}
{{APIPrefix|As String, Optional}}
{{APIName|StressRelation}}
{{APIPrefix|As [[ALTASolverLSR]]}}
=
{{APIName|ALTASolverLSR.Exponential,}}
{{APIPrefix|Optional}}
{{APIName|UseStress}}
{{APIPrefix|As Double}}
= 1 )
</li>
</ul>


Parameters
===Parameters===
:''Name'': The name of the new stress definition.
''Name''
:Required. String. The name of the stress.


:''StressRelation'': The stress transformation to apply to the new stress, specified using the [[ALTASolverLSR Enumeration|ALTASolverLSR]] enumeration.
''StressRelation''
:Optional. The stress transformation that will be applied to the stress. Applies to the general log-linear (GLL) or cumulative damage (CD) models only. Can be any [[ALTASolverLSR_Enumeration|ALTASolverLSR]] constant. Default value &#61; 0 (exponential life-stress relationship).


:''UseStress'': The use stress level.
''UseStress''
:Optional. Double. The use stress level. Default value &#61; 1.


== Usage Example ==


{{APIComment|Declare the ALTADataSet. See [[New ALTADataSet]] for additional details.}}
== Example ==
Dim ALTADS as New ALTADataSet
The following example demonstrates how to add stress definitions to an ALTADataSet object.


{{APIComment|Add a new stress definition.}}
'''VBA'''
ADS.AddStressDefinition("NewStress1")
{{APIComment|'Declare a new ALTADataSet object.}}
  {{APIPrefix|Dim}} ADS {{APIPrefix|As New}} ALTADataSet
 
{{APIComment|'Define 2 stress types with use stress levels &#61; 10 and 25.}}
  {{APIPrefix|Call}} ADS.AddStressDefinition({{APIString|"Stress1"}},,10)
  {{APIPrefix|Call}} ADS.AddStressDefinition({{APIString|"Stress2"}},,25)
 
{{APIComment|'Add failure times for Stress1 &#61; 190 and Stress2 &#61; 235.}}
  {{APIPrefix|Call}} ADS.AddFailure_3(100, 1, 190, 235)
  {{APIPrefix|Call}} ADS.AddFailure_3(120, 1, 190, 235)
  {{APIPrefix|Call}} ADS.AddFailure_3(130, 1, 190, 235)


{{APIComment|Add an [[ALTAStressProfile Class|ALTAStressProfile]] with stress segments. See [[ALTAStressProfile Class|ALTAStressProfile]] for additional details.}}
'''VB.NET'''
Dim NewStressProfile1 As New ALTAStressProfile("NewStressProfile1")
 
  NewStressProfile1.RepeatCycle = True
{{APIComment|'Declare a new ALTADataSet object.}}  
NewStressProfile1.AddSegment(1, 250)
  {{APIPrefix|Dim}} ADS {{APIPrefix|As New}} ALTADataSet
NewStressProfile1.AddSegment(2, 300)
 
  NewStressProfile1.AddSegment(3, 400)
  {{APIComment|'Define 2 stress types with use stress levels &#61; 10 and 25.}}
 
  ADS.AddStressDefinition({{APIString|"Stress1"}},,10)
{{APIComment|Add the stress profile}}
  ADS.AddStressDefinition({{APIString|"Stress2"}},,25)
        ALTADS.AddStressProfile(NewStressProfile1)
   
{{APIComment|'Add failure times for Stress1 &#61; 190 and Stress2 &#61; 235.}}
  ADS.AddFailure(100, 1, 190, 235)
  ADS.AddFailure(120, 1, 190, 235)
  ADS.AddFailure(130, 1, 190, 235)

Latest revision as of 20:41, 24 June 2016

APIWiki.png


Member of: SynthesisAPI.ALTADataSet


Adds a stress type to the data set.

Syntax

.AddStressDefinition(Name, StressRelation, UseStress)

Parameters

Name

Required. String. The name of the stress.

StressRelation

Optional. The stress transformation that will be applied to the stress. Applies to the general log-linear (GLL) or cumulative damage (CD) models only. Can be any ALTASolverLSR constant. Default value = 0 (exponential life-stress relationship).

UseStress

Optional. Double. The use stress level. Default value = 1.


Example

The following example demonstrates how to add stress definitions to an ALTADataSet object. 

VBA

 'Declare a new ALTADataSet object.  
  Dim ADS As New ALTADataSet
 
 'Define 2 stress types with use stress levels = 10 and 25. 
  Call ADS.AddStressDefinition("Stress1",,10)
  Call ADS.AddStressDefinition("Stress2",,25)
 
 'Add failure times for Stress1 = 190 and Stress2 = 235. 
  Call ADS.AddFailure_3(100, 1, 190, 235)
  Call ADS.AddFailure_3(120, 1, 190, 235)
  Call ADS.AddFailure_3(130, 1, 190, 235)

VB.NET
 
 'Declare a new ALTADataSet object.  
  Dim ADS As New ALTADataSet
 
 'Define 2 stress types with use stress levels = 10 and 25. 
  ADS.AddStressDefinition("Stress1",,10)
  ADS.AddStressDefinition("Stress2",,25)

 'Add failure times for Stress1 = 190 and Stress2 = 235. 
  ADS.AddFailure(100, 1, 190, 235)
  ADS.AddFailure(120, 1, 190, 235)
  ADS.AddFailure(130, 1, 190, 235)
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