Dynamic Stiffness in Hypermesh

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

Hello together,

 

Is it possible to determine the dynamic stiffness in Hypermesh?

if so, how is the process?

I have already done a Modal Analysis.

if you need any other information tell me plz.

 

I would be glad about a feedback

 

regards

dadas

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Answers

  • Q.Nguyen-Dai
    Q.Nguyen-Dai Altair Community Member
    edited January 2018

    What's your definition of 'dynamic stiffness'?

  • Sanjay Nainani_20973
    Sanjay Nainani_20973 New Altair Community Member
    edited January 2018

    Hello,

     

    Can you please refer the topic's below.

     

     

     

    If these do not solve your problem please let me know i will try to resolve your query.

     

    Thankyou

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited January 2018

    Hello Sanjay,

    both informations didnt solve my Problem.

    They say, that must perform a FRF. The dynamic stiffness is defined by Dynamic Force/Dynamic Displacement. What is my Dyn.Force and my Dyn.Displacement? Where can I get this?

    Can u say the process for the determination of the values.

     

    Thx.

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited January 2018

    Who can help me plz???

     

  • Sanjay Nainani_20973
    Sanjay Nainani_20973 New Altair Community Member
    edited January 2018

    I am looking into this. i will get back to you as soon as possible.

     

    Thankyou

  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited January 2018

    Thank you Sanjay

  • Sanjay Nainani_20973
    Sanjay Nainani_20973 New Altair Community Member
    edited January 2018

    Hello,

     

    The best way to calculate Dynamic Stiffness is to do a Frequency Response Analysis.

     

    There is no direct way of getting this value from Optistruct

     

    I am attaching a sample deck for this please have a look at it.

     

     

    Thankyou

    Unable to find an attachment - read this blog

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