[Gmsh] Making a Abaqus/Calculix .inp file, second order quads

[Justin Black]

I figured out the answer. I needed to turn on the following gmsh flag to
make the element only have 8 nodes:

Mesh.SecondOrderIncomplete=1; //req for 2nd order, no face node

If this option is not set, the second order quad that gmsh will make has 8
nodes to define the quad element and an additional node in the center of
the face, a total of 9 nodes to define the element.
So always use the above line if you are exporting 2nd order quads to
Calculix/Abaqus.
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