Automatic small chamfer feature recognition from B-rep models for analysis

Jianjun Peng

Abstract


The recognition and suppression of small feature from B-rep models play an important role in effectively generating the qualified mesh for analysis. This paper presents the ruled-based algorithm for recognizing two types of small chamfers automatically from manifold B-rep models from the viewpoint of finite element analysis (FEA). The algorithm firstly transforms the input B-rep model into an aggregation of the faces. Then, each face is judged to be a chamfer feature or not based on matching conditions. At last, the chamfers with larger physical sizes than a threshold value are excluded. The innovations of this algorithm lie in the related recognition conditions and unique procedures for calculating the chamfer physical size. Several comprehensive examples are given to demonstrate the validity and applicability of the algorithm.


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Revista de la Facultad de Ingeniería,

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