Fatigue Analysis

T_Yama

I'm checking parts fatigue cycle by altair MSC nastran, and I can get the P1 which is Smax and P3 which is Smin from FEM result. But I could not get the contor of Stress ratio R which is Smin/Smax. I'd like to know how to write a command to get the contor of the stress ratio. Could you please help me to get information. Thank you,

Adriano_Koga

please, refer to this tutorial for HyperView, in order to create a Derived Result.

With this approach you can create operations as you wish to compute the Stress Ratio.

https://2022.help.altair.com/2022/hwdesktop/hv/topics/tutorials/hv/hv_3099_creating_derived_results_t.htm#task_uh4_vsk_thb