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Automatic surface repairing, defeaturing and meshing algorithms based on an extended B-rep

Jianjun Chen, Bingwan Cao, Yao Zheng, Lijun Xie, Chenfeng Li Orcid Logo, Zhoufang Xiao

Advances in Engineering Software, Volume: 86, Pages: 55 - 69

Swansea University Author: Chenfeng Li Orcid Logo

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Abstract

This paper presents an extended surface boundary representation (B-rep), where each topology entity can have dual geometric representations to accommodate various defects (e.g., gaps and overlaps) commonly present in CAD models. Keeping a uniform B-rep and the unsuppressed geometry data enables the...

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Published in: Advances in Engineering Software
ISSN: 0965-9978
Published: 2015
Online Access: Check full text

URI: https://cronfa.swan.ac.uk/Record/cronfa21424
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Abstract: This paper presents an extended surface boundary representation (B-rep), where each topology entity can have dual geometric representations to accommodate various defects (e.g., gaps and overlaps) commonly present in CAD models. Keeping a uniform B-rep and the unsuppressed geometry data enables the use of various existing repairing, defeaturing and meshing algorithms to process CAD models with small gaps and overlaps on surface boundaries. The continuous geometry of the input model remains untouched in the repairing, defeaturing and meshing process, and the output mesh is loyal to this geometry. Such feature is often desirable in numerical simulations that require meshes with high geometry fidelity.
Keywords: Mesh generation, Repairing, Defeaturing, Boundary representation, Virtual topology, Face clustering
College: College of Engineering
Start Page: 55
End Page: 69