The .HM.ent.cmf file is a HyperMesh command file.

File Creation

The .HM.ent.cmf file is created when a topology optimization is performed (see Topology Optimization in the OptiStruct User's Guide).

File Contents

When executed in HyperMesh, the .HM.ent.cmf file organizes all elements in the model into ten new entity sets based on their material densities at the final iteration. The sets are named 0.0-0.1, 0.1-0.2, 0.2-0.3, and so on, up to 0.9-1.0. All elements with a material density between 0% and 10% are contained in 0.0-0.1. All elements with a material density between 10% and 20% are contained in 0.1-0.2, and so on. You can then visualize the results by masking the entity sets which contain those elements with lower density.

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