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Could you tell me the ratio of Kinematic Hardening and Isotropic Hardening if I select Combined Hardening in Materials Properties? And if it is possible to set the ratio of Kinematic Hardening, how can I do it?

Could you tell me the ratio of Kinematic Hardening and Isotropic Hardening if I select Combined Hardening in Materials Properties?
And if it is possible to set the ratio of Kinematic Hardening, how can I do it?
  • I assume this question is for MSC Nastran solution 106.   I have dug around a bit, and so far the only place I find some details are in the old Nonlinear Handbook.  I will attach a screen shot of the pertinent page.  It implies Combined is an average of Isotropic and Kinematic.  I will try to find a developer to confirm and will update you once I hear back.​
     
    But, there is definitely no way to define the ratio used in Nastran (this can be done in Marc).

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  • The response I got from development was they think it is 50-50 and there is no way for the user to change this... this was implemented a long time ago... if you need me to be 100% certain of the ratio, let me know, otherwise I'll consider this response good enough!​