Fatigue analysis based on rainflow counting

Altair Forum User
Altair Forum User
Altair Employee
edited October 2020 in Community Q&A

Hello everyone,

 

based on a transient analysis with a measured displacement signal I would like to conduct a fatigue analysis based on rainflow counting.

Is it possible for OS to calculate the rainflow matrix for each integration point?

 

Thanks in advance.

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Answers

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    Hi @JD3640

     

    Do you mean each time integration?

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    Hi Prakash,

     

    yes, that's right. I will have a randomly excited structure analyzied by transient response analysis with a random stress time history in each element.

     

    If I do rainflow counting on the load it won't help as the structure responds according to it's eigenmodes and -frequencies.

     

    I would like to use the Fatigue Process Manager, though.

     

    Regards

     

    JD3640

     

     

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    @JD3640 I will check and update to you soon. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    Hi,

    OS supports fatigue based on transient. There is also output request such as RNFLOW Please refer to OS document for more information. 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited July 2017

    OK, thanks for the information.

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