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Non-linear strain
Posted 13 mag 2014, 05:31 GMT-4 Structural Mechanics Version 4.4 2 Replies
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Hi,
I have a question concerning Solid Mechanics module.
In the Linear Elastic Material, the formulation of the strain is given as: e=0.5[\Delta u^T+\Delta u]
However my problem is a bit more complicated, and I have to apply nonlinear strain formulation such as: e=0.5[(\Delta u)^T+(\Delta u)+ (\Delta u)^T (\Delta u)]
I saw that in the example model "Large Deformation Beam", this formulation is applied, but I cannot find how to turn this option on in comsol v4.4.
Apparently in some of the previous versions, v4.0, v3.5a, this option was available by adding "non linear geometric". However, I cannot find this option in v4.4.
How to get around this problem? Is there some other option for including nonlinear strain?
Thank you for your help!
Kiril
I have a question concerning Solid Mechanics module.
In the Linear Elastic Material, the formulation of the strain is given as: e=0.5[\Delta u^T+\Delta u]
However my problem is a bit more complicated, and I have to apply nonlinear strain formulation such as: e=0.5[(\Delta u)^T+(\Delta u)+ (\Delta u)^T (\Delta u)]
I saw that in the example model "Large Deformation Beam", this formulation is applied, but I cannot find how to turn this option on in comsol v4.4.
Apparently in some of the previous versions, v4.0, v3.5a, this option was available by adding "non linear geometric". However, I cannot find this option in v4.4.
How to get around this problem? Is there some other option for including nonlinear strain?
Thank you for your help!
Kiril
2 Replies Last Post 15 mag 2014, 04:14 GMT-4
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Posted:
1 decade ago
Hi
You find the "Include geometric nonlinearity" in the study step, it at the top in the settings for the stationary study step.
Best regards
Thure
You find the "Include geometric nonlinearity" in the study step, it at the top in the settings for the stationary study step.
Best regards
Thure
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Posted:
1 decade ago
Thank you for your answer!
It works quite well now!
Best regards
Kiril
It works quite well now!
Best regards
Kiril