Guys I have to simulate a screw pull out in a vetebra bone. My contact(screw-bone) its ok. I check this on linear analysis. Now And I using, initially solution 601, 106 on advanced simulation tool(NX 10). When I run the model pop up the following error on *.log file:
*** ERROR NO. A1101 ***
Mesh too distorted, Jacobian determinant not positive
Anyone can help me with that. Actualy, I´m using Advance
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You have a "distorted mesh" problem, nothing to see with memory allocation. In general (without the problem in hand) the distorted mesh is caused by excessive displacement within iteration. The reasons of the large displacement could be a few:
I suggest to simplify your model, reduce nonlinearities, or at least do not include all your nonlinearities together since the beginning, identify sources of nonlinearity and reduce them until solution converges.
For geometric nonlinearity:
For material nonlinearity:
For load nonlinearity:
For contact nonlinearity:
Well, the above are basic procedures in nonlinear analysis using NX NASTRAN Advanced NonLinear Module (SOL601), but each nonlinear problem is a world, please be patient & methodical and test the different options, OK?.