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Summary 0027798: Bad or degenerated triangles should be avoided (e.g for Cone meshing)
Revision 2016-08-22 07:34 by Vico Liang
Description OCCT meshing algorithm generates good mesh for most cases. But there are some speical cases which will generate bad triangle with angle near 180 degree or degenerated triangle with two coincident nodes. It can be reproduced with Cone Shape. It will be a big issue if these bad or degenerated triangles serve as input of remesher algorithm or simulation solver. The root cause might be about edge meshing of cone generatrix. The straight edge of cone generatrix will never be divided whatever how long it is. If the straight long edge can be divided as necessary, the bad triange might be avoided.
Revision 2016-08-22 07:32 by Vico Liang
Description OCCT meshing algorithm generates good mesh for most cases. But thre are some speical cases which will generate bad triangle with angle near 180 degree or degenerated triangle with two coincident nodes. It can be reproduced with Cone Shape. It will be a big issue if these bad or degenerated triangles serve as input of remesher algorithm or simulation solver. The root cause might be about edge meshing of cone generatrix. The straight edge of cone generatrix will never be divided whatever how long it is. If the straight long edge can be divided as necessary, the bad triange might be avoided.


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