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Yield function & plasticity
Posted 25 giu 2009, 10:03 GMT-4 2 Replies
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im trying to use Comsol Strutural Mechanics Module to simulate some geotechnical problems. I created a rectangle with roller boundaries on the left, right and bottom boundary. The upper boundary is a load in the -y-direction. The expected stress state does not reach a plastic state.
Using perfectly plastic with von Mises yield function, or Drucker Prager yield function, the solver doesn't find convergence.
Moving the upper right point 0.0001m against the y-direction, the sovler finds convergence after a few seconds.
Where is the problem?
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Hello Tim Pucker
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Is your solution supposed to be in plastic region?
Hi,
im trying to use Comsol Strutural Mechanics Module to simulate some geotechnical problems. I created a rectangle with roller boundaries on the left, right and bottom boundary. The upper boundary is a load in the -y-direction. The expected stress state does not reach a plastic state.
Using perfectly plastic with von Mises yield function, or Drucker Prager yield function, the solver doesn't find convergence.
Moving the upper right point 0.0001m against the y-direction, the sovler finds convergence after a few seconds.
Where is the problem?
Please login with a confirmed email address before reporting spam
Is your solution supposed to be in plastic region?
Hi,
im trying to use Comsol Strutural Mechanics Module to simulate some geotechnical problems. I created a rectangle with roller boundaries on the left, right and bottom boundary. The upper boundary is a load in the -y-direction. The expected stress state does not reach a plastic state.
Using perfectly plastic with von Mises yield function, or Drucker Prager yield function, the solver doesn't find convergence.
Moving the upper right point 0.0001m against the y-direction, the sovler finds convergence after a few seconds.
Where is the problem?