DLOAD, Random Response Analysis

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

 

How I can calculate the load I have to apply to Dload 1 and Dload 2 for the Random response analysis?

And What is the Critical damping ratio value recommended for a range of  vibrations at 20 from 2000 HZ?

 

I want analyse a cubesat.

 

Someone can help me?

 

Kind regards

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Answers

  • Rahul_P1
    Rahul_P1
    Altair Employee
    edited March 2015

    FER CM

     

    This information must be available in structural dynamics texbooks, library, online resources. 

     

    I would suggest you to kindly refer our tutorial on Random Analysis which would help you with the set-up. The tutorial is RD-2050. 
    Please follow the navigation in HyperWorks Tutorial section of our help: HyperWorks Solvers > RADIOSS > Advanced Small Displacement Finite Element Analysis: RD-2050 

  • mallappa madakatti
    mallappa madakatti New Altair Community Member
    edited December 2017

    Hi sir,

    I am doing random vibration analysis in  HVAC assembly component . Bellow are the customer criteria

    my dauts is

    1.what is tabled1 card in random analysis and what value i can enter the tabled1 card 

    2.FREQ1 what value i can enter my frequency range is 5 to 150hz 

    F1=? DF=? NDF=?

    3.daming is  3% i can use tabdmp1 card 

    f and g value f =?  i now g is daming value 

    4. where i can enter 5 hour each direction 

     

     

     

     

     

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  • Altair Forum User
    Altair Forum User
    Altair Employee
    edited December 2017

    Hi @mallappa madakatti

     

    If you are a commercial customer, could you please get in touch with your local support team so that you can directly talk to them?

     

    You can contact your local support using 

     local support @ http://www.altairhyp...ortProduct.aspx

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