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elastic-perfectly plastic diffusion problem
Posted Nov 21, 2015, 1:00 a.m. EST Heat Transfer & Phase Change, Structural Mechanics Version 5.0 2 Replies
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Dear all,
I am simulating the diffusion induced stresses in a sphere. I did the simulation for elastic case (multiphysics structural module with pde) . Now as a next step i see the stresses are high and cause plastic deformation in some portion of sphere during diffusion.
Diffusion is time dependent where as plasticity model(elastic-perfectly plastic ) is static one. When i use time dependent solver it gives an error. How to capture this behavior?
Regards,
Meena
I am simulating the diffusion induced stresses in a sphere. I did the simulation for elastic case (multiphysics structural module with pde) . Now as a next step i see the stresses are high and cause plastic deformation in some portion of sphere during diffusion.
Diffusion is time dependent where as plasticity model(elastic-perfectly plastic ) is static one. When i use time dependent solver it gives an error. How to capture this behavior?
Regards,
Meena
2 Replies Last Post Nov 25, 2015, 12:16 p.m. EST
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Posted:
9 years ago
Hi Meena,
Both stationary and transient solvers should work for elastic-plastic materials. However, one trick that helps sometimes when you have to solve a static structural problem as a transient one is to exclude inertia effects by setting Structural Transient Behavior to Quasi-static.
Nagi Elabbasi
Veryst Engineering
Both stationary and transient solvers should work for elastic-plastic materials. However, one trick that helps sometimes when you have to solve a static structural problem as a transient one is to exclude inertia effects by setting Structural Transient Behavior to Quasi-static.
Nagi Elabbasi
Veryst Engineering
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Posted:
9 years ago
Thank-you for the help!
system works for istropic hardening model but do not converge for elastic-perfect plastic model .
I set the direct solver setting to nonlinear newton still it fails to converge.
Any suggestion for resolving this issue?
Thanks,
regards,
Meena
system works for istropic hardening model but do not converge for elastic-perfect plastic model .
I set the direct solver setting to nonlinear newton still it fails to converge.
Any suggestion for resolving this issue?
Thanks,
regards,
Meena