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How to indicate fiber direction for orthotropic material with Feap?
Fri, 2009-07-24 05:49 - n_n_huynh
I am using Feap 7.5 to test a pipe (subjects to internal pressure) that has different mechanical property in radial direction (0R), circumferential direction (0T) and longitudinal direction (0Z). Originally, mechanical properties are given according to the (0R,0T,0Z) axes. I was required to use the hexahedral element (brick) to simulate this problem. Could you show me how to use the mechanical properties according to the (0R,0T,0Z) axes in the global axes (0X,0Y,0Z).
Thank you in advance.
NH NGUYEN.
Forums:
Inhomogeous materials in FEAP
None of FEAP's built-in materials are inhomogeneous in this sense in version 7.5. To do this with version 7.5 you will need to write your own user element. The other (perhaps easier) option is to edit the FEAP element you are using to pass the quadrature point location to FEAP's stress evaluation routine and to program in the relevant rotations/translations.
Prof. Dr. Sanjay Govindjee
University of California, Berkeley
Thank you
Dear Prof. Dr. Sanjay Govindjee,
Thank you for your quick and precise answer.
Best regards,
NH NGUYEN.