Fatigue analysis with preload

hiranwale_bharat
hiranwale_bharat Altair Community Member
edited October 2020 in Community Q&A

hello everyone,

 

Is it possible to perform fatigue analysis with a preloaded staic/transient subcase?

 

I have a component which is preloaded and then undergoes fatigue test in preloaded condition itself.

 

is it possible?

 

Regards,

Bharat

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited April 2016

    Hi,

    Currently we cannot reference static and transient subcases in a single FATEVNT. For your purposes, since it is a Press fit solution, you should theoretically be able to apply the NLSTAT press fit effect using STATSUB(PRELOAD) in the DTRAN subcase (available in 14.0). Please note that this only modifies the stiffness matrix (NLSTAT press fit effect) in the transient subcase.  The preloaded DTRAN subcase can then be referenced by FATEVNT.

     

    Also, note that PARAM,NLFAT should be used with caution.

    Regards

    Rahul R

  • hiranwale_bharat
    hiranwale_bharat Altair Community Member
    edited April 2016

    Ok

    thanks Rahul

    regards,

    Bharat

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