Meshing

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A new automatic tetrahedral mesh generator from SIMULOG is integrated with FEMGV 6. This allows the Femgen user to generate low and high order tetrahedral elements (TE4, TE10 & TE16). Most analysis codes recommend the use of TE10’s over TE4’s due to over stiffness. As part of the integration, a new quality test for tetrahedra called RADRAT and a JACOBIAN check for solid elements have been introduced.

A typical application for the tetrahedral elements is the meshing of the new multi-faceted bodies (created as described in section 2.2.2). Also the tetrahedral mesher can be used on all conventional FEMGEN bodies.



The free quad meshing algorithm has been improved to include:

• More interrupt tests,
• Better crossing/connection tests,
• Better handling of convex nodes on internal loops,
• New scheme to deal with the case where holes have small element sides and the outer boundary has relatively large,
• New scheme to deal with concave - concave boundary segments, More appropriate usage of memory.

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