Radioss - Quasi Static Analysis

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

Hi all,

 

I want to perform a quasi static analysis with te solver Radioss to compare with optistruct results.

 

The model is a plate of 1000*1000 millimeters with a 10*30 quad mesh.

Each side node translation in the 3 directions are blocked.

I put load of type PLOAD wich increase linearly from 0 ms to 300 ms and stay constant from 300ms to 20s.

I activated the control card /IMPL/QSTAT to perorm a quasi static analysis.

 

But I have some error messages during the calculation : WARNING : THE ITERATION LIMIT NUMBER WAS REACHED   19806

 

And finally the time of calculation is very high ... Maybe i made something wrong in the data setting ?

 

Thanks 

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Answers

  • Mr.Alb
    Mr.Alb New Altair Community Member
    edited February 2020

    It may depend on timestep. If it's too big, you could lose your slope in PLOAD. Anyway, to compare static and quasi-static i suggest you to try with less slope, because with a high one, analysis's closer to a dynamic than a static evaluation. Let me know!

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