Why the strain varies with mesh size?
Why the strain varies with mesh size?
(OP)
Hi,
I have calculated a case that the material bears surface traction.
When I did the mesh sensitivity, the output max log strain increased from 0.133 to 0.741 with the element size decreasing from 0.5 to 0.03?
I can't understand this result. Can you help explain the theory inside this problem?
Thanks
Wyn
I have calculated a case that the material bears surface traction.
When I did the mesh sensitivity, the output max log strain increased from 0.133 to 0.741 with the element size decreasing from 0.5 to 0.03?
I can't understand this result. Can you help explain the theory inside this problem?
Thanks
Wyn





RE: Why the strain varies with mesh size?
Remember the stress results for a QUAD are sensitive to the stress gradient, and are possibly most accurate at the element centroid.
I imagine you're running linear FEA. a question to ask yourself is "when do i violate linearity?" and then "does it matter?"
another day in paradise, or is paradise one day closer ?
RE: Why the strain varies with mesh size?