#1 2019-10-29 10:22:35

Alessia Bez

Member

Registered: 2019-10-14

Posts: 10

Principal stresses in dynamic analysis

Hello,

I'm doing dynamic analysis on a three-dimensional element model, I can't understand how to extract the principal stresses and create a table of it. Can you suggest me an example to refer to?
Is it also possible to save the results of the simulations in a text file?
thank you in advice for the answers you will give me,

Alessia

dezsit

Member

Registered: 2012-06-27

Posts: 69

Website

Re: Principal stresses in dynamic analysis

Hi,

You should check the CALC_CHAMP command and CRITERES -> SIEQ_NOEU for example. It provides all invariants, including principals, independently from the type of the analysis. After that,  you should use POST_RELEVE_T to produce table, and IMPR_TABLE to write it out to a txt file (you have a lot of option to format it to your needs),
also IMPR_RESU, FORMAT='RESULTAT' will provide you a text file with your specified results.

I would suggest to check Jean Pierre Aubry's book: framabook.org/beginning-with-code_aster/
you will find a lot of example in it, also in the Training section of this site, and in the case files of the aster. Just check the keywords I mentioned above.

BR,
dezsit

Last edited by dezsit (2019-11-04 22:28:54)

Alessia Bez

Member

Registered: 2019-10-14

Posts: 10

Re: Principal stresses in dynamic analysis

Thank you for your reply,
I don't know why but in DYNA_VIBRA I can't choose any criteria or contrainte in CALC_CHAMP, I tried both with CREA_CHAMP and with CREA_RESU but without success.
Thanks anyway for your advice, I will check Jean Pierre Aubry's book and training material more carefully.

Alessia