how to turn off double (rear facing elements)
how to turn off double (rear facing elements)
(OP)
When I export a FEM I end up with the elements I wanted, plus a copy of every element in the mesh with a reverse facing normal. How do I turn this behavior off and just export the forward facing elements?
thanks!
thanks!





RE: how to turn off double (rear facing elements)
RE: how to turn off double (rear facing elements)
THe problem is that if I have a cube, for example, I would expect taht cube to be comprised of 6 elements - 1 per face with normals facing outward. What I get though is a cube with 12 elements - 2 per face with opposing normals.
I suspect that it it some checkbox somewhere along the lines of 'turn off reverse facing elements' I just dont know where it is.
Thanks!
RE: how to turn off double (rear facing elements)
What you can do to fix the reversed normals is the following:
Analysis > Finite Element Model Check > 2D Element Normals By Seed (select an element) > Apply > Reverse Seed Normal > Apply
Do the above procedure on the meshes which have reversed normals, and you should be able to manually fix your model, ending up with properly facing normals.
Hope this helps you.
RE: how to turn off double (rear facing elements)
Or are you saying that if there is an ambiguous normal it will duplicate the mesh? for example if the cube has 3 inward normals and 3 outward normals it will not know what to do and just make more elements? If that is the case is there an easy way to identify the problem area?
RE: how to turn off double (rear facing elements)
RE: how to turn off double (rear facing elements)