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How to integrate with 6 tying points (TP) for transverse shear and 4 TP for in-plane shear, in case of Assumed Natural Strain?
Hi Experts,
I am presently working with a 9-node shell element and understood that there were many rigid body modes available even with reduced integration.
Thus, I am planning to implement Assumed Natural Strain and found out that there will be 6 integration points for transverse shear strains gamma_xz and gamma_yz and nominal strain while there are only 4 typing points in-plane shear strain.
Attached Images
(1) ANS Strain integration, (2) Tying points
While please be noted that I am using material non-linearity (plasticity) which is designed to get integrated at the same integration point for stress update or during stiffness calculation. Generally, I am using 2x2 integration points for 9-noded element.
Can you please guide me, how this integration can be achieved at a common integration point in the case of Assumed Natural Strain Method.
Please let me know if you require any further information in this regards.
Thanks
Best regards,
Maharshi.
Attachment | Size |
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ANS Integration | 11.85 KB |
Tying Points | 41.42 KB |
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