Select the geometry library to be used for contact operations:

For many models, the Default Library can substantially reduce simulation time. Because it is polygon-based, however, it is not always as accurate as the Parasolid geometry engine. Parasolid is an exact boundary-representation geometric modeler, which makes it highly accurate, but not as fast as a polygon-based engine. For these reasons, you can switch from one to the other depending on your needs.

CONTACT_FACETING_TOLERANCE=value

Specifies the resolution of the mesh that is to be created from the solid geometries in the model. Contact kinematics are calculated by intersecting the meshes corresponding to two solid geometries. A finer mesh will result in more accurate contact calculations. However, calculations may be slower, and computer memory requirements will increase as the mesh resolution increases.

The faceting tolerance is defined as the maximum error between the true surface and the surface of the faceted representation of the geometry. The maximum error is guaranteed not to exceed (1/value) * the minimum dimension of each geometry's bounding box.

The default value of this parameter is 300.0028.

The value specified for the faceting tolerance only applies to geometry read from a Parasolid file. All native geometry (ellipsoid, cylinder, box, frustum, torus, surface of revolution, and extrusion) is tessellated with a fixed tolerance when a faceting tolerance is specified. Stl and shl files have fixed faceting that cannot be changed.