Important Need Clarification regd post processing?

Sai Vignesh
Sai Vignesh Altair Community Member
edited October 2020 in Community Q&A

I ran Frequency response analysis and when i viewed the results in frequency domain  in modal view my stress is different when i change  to linear transient mode my  stress results are different why so output should be same right how changing to modal view /linear transient changes my result???

 

Kindly help

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Answers

  • Rahul Rajan_21763
    Rahul Rajan_21763 New Altair Community Member
    edited September 2018

    Please use transient animation mode to post process output of Frequency response analysis.Modal animation should be used only for modal analysis outputs. 

  • Sai Vignesh
    Sai Vignesh Altair Community Member
    edited September 2018

    Hi 

    I understand that why that difference in stress occurs I just wanna know what makes the difference If you could kindly explain 

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited September 2018

    Hi @Sai Vignesh

     

    The transient animation displays the model in its timestep positions as calculated by the analysis code.  

     

    Modal animation creates and displays an animation sequence that starts and ends with the original position of the structure.  The deforming frames are calculated based on a sinusoidal function, and the results are also calculated as the same.

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