Mesh quality improvement in computer aided engineering

摘要

A method, for use in meshing a CAD domain in a computer-aided design (CAD) or computer-aided engineering (CAE) system, comprises carrying out a procedure comprising: obtaining a set of mesh elements by extracting, from a previously-generated mesh of the CAD domain which has undergone a mesh element optimization process in respect of interior elements of the previously-generated mesh, mesh elements which do not satisfy a preselected mesh quality metric; decomposing the set of mesh elements into connected sub-meshes; carrying out a serial mesh element optimization process in respect of each sub-mesh independently and in parallel, under the condition that boundary nodes of sub-meshes are not moved, to obtain optimized sub-meshes; and obtaining an optimized mesh of the CAD domain by integrating the optimized sub-meshes into the previously-generated mesh.

主权项

1. A method for use in meshing a computer-aided design (CAD) domain in a computer-aided design (CAD) or a computer-aided engineering (CAE) system, the method comprising:
generating a mesh by splitting the CAD domain into a plurality of sub-domains, creating a sub-domain mesh corresponding to a respective sub-domain among the plurality of sub-domains, optimizing interior elements of respective sub-domain meshes of the plurality of sub-domains, and merging resulting respective sub-domain meshes together to form the mesh; obtaining a set of mesh elements by extracting, from the generated mesh of the CAD domain, mesh elements which do not satisfy a preselected mesh quality metric, and using mesh element connectivity with respect to the extracted mesh elements to identify additional mesh elements for inclusion in the set such that a number of mesh elements in the set is expanded to a required level; decomposing the set of mesh elements into connected sub-meshes; executing a serial mesh element optimization process on respective sub-meshes independently and in parallel, under a condition that boundary nodes of the sub-meshes are not moved, to obtain optimized sub-meshes; and obtaining an optimized mesh of the CAD domain by integrating the optimized sub-meshes into the generated mesh of the CAD domain.