how to get the strain of random region in FEM part

stranskyjan / dem-fem-coupling

Open source codes for coupling of Finite Element Method and Discrete Element Method using YADE, and OOFEM softwares.

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how to get the strain of random region in FEM part #20

Open wcc201834748 opened 4 years ago

wcc201834748 commented 4 years ago

Jan, i want to get the strain of the random region of FEM part, like node even the point on the edge of the fem element. And transport the strain to the DEM part at the same place. Can oofem monitor the strain at those place?

stranskyjan commented 4 years ago

I don't know of a "direct" method, but probably there is some.

You can try:

find an element containing the coordinates using spatial localizer and localizer.giveElementContainingPoint(pos,None)
do standard FEM interpolation on the elment. I don't see the way in python after a (very) quick search, so you can:
- get nodal coordinates and nodal values
- knowing the type of the element, and nodal values, interpolate "manually"

wcc201834748 commented 3 years ago

Sorry Jan, i want to give up it. It too hard for me. It may be a little impolite, but i still want to consult that if it possible to hire you or somebody else you familiar to help me finish the code part. I have tried my best to realize my idea, but it too difficult for me. Forgive me for speaking directly, sorry for that.

stranskyjan commented 3 years ago

Ok, no problem. The code itself is not meant as a ready-to-use solution (or for some specific cases) and needs some contribution from the user.. Currently I have no resources for such a work.

You can contact Oofem people, see links discussed here. Also note that both relatively old and modified version of oofem is used for this project.

good luck Jan