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Solution Mapping with Hyperelastic materials?

Solution Mapping with Hyperelastic materials?

Solution Mapping with Hyperelastic materials?

I am trying to do solution mapping after remeshing for a stress/displacement analysis problem with thermal exapnsion. I have written my own remeshing utility. I use the keyword *MAP SOLUTION in the new job's inp file. When, I use HYPERELASTIC material (or NEO HOOKE or MOONEY-RIVLIN), the interpolated stresses after solution mapping from old mesh are different from before remeshing (even if I really don't do any remeshing and use the same old mesh for the new job). They are usually higher causing convergence problems at the begining of the analysis in the new job. This is not the case for linear elastic material in which the interpolated stresses are fairly accurate. I should say that my problems happen only when I use thermal expansion, but for other types of loads, this problem does not happen even with HYPERELASTIC material.
Does anyone know what might be causing this problem, or if there is any solution for it?
Many thanks,

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