| Author |
Message |
    
jane
Member
Username: jane
Post Number: 6
Registered: 04-2010
| | Posted on Thursday, July 08, 2010 - 08:46 pm: | |
Can FlexPde be used to analysis plastic problem?
Cheers,
Jane |
rgnelson
Moderator
Username: rgnelson
Post Number: 1381
Registered: 06-2003
| | Posted on Wednesday, July 14, 2010 - 01:28 pm: | |
We have not done extensive study of plasticity with FlexPDE, but we have done some simple studies that indicate it will work successfully.
There are several ways to address the problem. With a fixed mesh, you can detect the onset of plasticity as long as the deformations are small. For larger displacements, you need a moving-mesh, time-dependent model. You cannot let the elasticity drop to zero, or the mesh will collapse and halt the simulation. You should smooth the transition from elastic to plastic state, or the computation will thrash.
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jane
Member
Username: jane
Post Number: 7
Registered: 04-2010
| | Posted on Thursday, July 15, 2010 - 09:28 pm: | |
Thank you very much Nelson.
Could I ask are there any examples I can learn? I am just a new hand for Flexpde.
Cheers,
Jane |
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