Does anyone know how to do a prestressed vibration analysis by ADINA? 1

[hoodzhj]

I found an ADINA example about doing a prestressed vibration analysis of a cylinder shell. I followed the example step by step, but finally I got the results show that the natural frequencies of that shell were the same as well as when the shell was not under prestressed status. I think that example must have something wrong or missing. Could anybody tell me the process of doing this kind of prestress problem?
Thank you very much!

 

[GregLocock]

Ina linear analysis where bending is the predominant elasticity then pre stress does not affect the modal frequencies or shapes.



Cheers

Greg Locock

Please see FAQ731-376 for tips on how to make the best use of Eng-Tips.