Symbolic representation of three-dimensional objects to aid local and global shape analysis for defect prediction of casting design

摘要

Part descriptions of a 3-D computer-aided design model are in a form of basic geometry and topology to which manufacturing process and engineering analysis cannot be directly applied. A formalism for symbolic representation of a three-dimensional pattern model is presented to aid local and global shape analysis of casting design. Local shape analysis is carried out based on symbolic representation and global shape analysis is performed by analyzing the extracted skeleton from a discretized object.