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Issues encountered when using Ncode for FSAE chassis component fatigue analysis

- November 7, 2025 at 12:37 pm
  
  wangshenyaoBN
  Subscriber
  
  I encountered an issue while performing Ncode fatigue analysis
  "Error: Mismatched data types in equation. Type required: Boolean. Type available: UndefinedVariable (Name: #Test.DX_parameters.Parameter_per_group#)." How can I resolve this data type mismatch error?
- December 5, 2025 at 12:36 pm
  
  danielshaw
  Ansys Employee
  
  I am not sure what is causing this error. Can you open a support case and provide the model? It appears that you are using one the Workbench integrated Ansys nCode DesignLife systems. If so, you should verify that the material definition and the solve engine type are consistent. For example, the default SN systems use a R-ratio SN engine, but maybe the material is defined using mean stress. DesignLife requires that the material definition and the solver type are compatible.

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