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[Evgenii_K]

Happy New Year and Merry Christmas everyone.

Came to the conclusion that I need to create my custom results. The formula by which the stresses will be calculated is rather complicated and not one, that is, this is a whole condition by which the principal stresses are calculated in a special way and on the basis of their invariants of the diviator and stress tensor.

[Ashish Khemka]

Wish you a Merry Christmas and a Happy New Year!
You can use multiple user-defined results and call them through identifiers.
I am not sure what expression you are planning to use but an algebraic representation of stress components using identifier is possible.

Regards Ashish Khemka

[Aniket Chavan]

you may want to create an ACT result if your formulae are complicated and not suitable for user-defined results:
https://ansyshelp.ansys.com/account/Secured?returnurl=/Views/Secured/corp/v212/en/act_cust_mech/act_Mech_FeatureCreation_Postprocessing.html
The link above shows 3 different custom results which you can use as a base to develop your own extesnsion.
-Aniket
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[Evgenii_K]

Thank you @Aniket, I solved my problem in the first way, but I didnÔÇÖt work with ACT yet, IÔÇÖll take a look.