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The question about the mesh of crack tip
Thu, 2008-04-03 09:30 - Bing Liu
I am working for the FE model of cracked pipes. I use Hypermesh to mesh the model, but the element can not be set to the C3D20R type. I donnot kwon why it is. So I can use the C3D15. Then I can th following error message:
***NOTE: THE COORDINATES OF NODES WITHIN THE SAME CLUSTER ARE NOT IDENTICAL. THIS IS THE CASE FOR NODES 22 1224
***ERROR: TRIANGLES, TETRAHEDRA, AND WEDGES MAY NOT BE USED IN A CONTOUR INTEGRAL REGION. ELEMENT 960 IS WITHIN A CONTOUR REGION
***WARNING: NO VALID ELEMENTS FOUND IN CONTOUR INTEGRAL REGION
What's wrong?
Thanks a lots for your time.
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hi
Im also having similar problem. did u find the solution?
C3D20 and C3D27
Hi,
It's normal, you can use only C3D20 and C3D27 brick elements for the crack front. To mesh the crack tip, you must collapse 2 or 3 nodes to the same location respectively if you use C3D20 or C3D27 elements.
Regards
Stephane