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I have been using the muscle material in a analysis, and got it working well, then began a convergance test so increased the mesh density, and the same muscle parameters (on an the same geometry) are now throwing up negative jacaobians and not solving. Do the parameters not scale with mesh density?
Thanks,
Paula
You should not have to change the material parameters. You may need to decrease the time step size. As elements become smaller they are easier to invert. Decreasing the time step size often helps this problem.
Cheers,
Steve
Department of Bioengineering, University of Utah
Scientific Computing and Imaging institute, University of Utah
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