NairnFEAMPM Icon

FlipTriangles Command

The FlipTriangles command is to deterime the way meshes are divided into triangular elements:

FlipTriangles <(option)>

where (option) is "yes" or "no" to flip or not flip the triangles. This argument is optional. If it is omitted, the command will toggle the previous setting for triangle flipping. The initial value is always "no".

This command takes effect when areas defined by four paths are meshed into trangular elements. Triangular elements are created by meshing the area in to quadrilaterals and then dividing each quadrilaterals along its diagonal. The flip triangles option determines which diagonal is used.

Notes

  1. Any new setting by a FlipTriangles command remains in effect until it is changed by another FlipTriangles command.
  2. The FlipTriangles is mainly used to insure that nodes at the intersection of several areas do not belong to too many elements.
  3. The FlipTriangles command is only allowed for FEA analyses.