A CAD modeling system for heterogeneous object

Authors:
Xiaojun Wu;Weijun Liu;Michael Yu Wang
Affiliations:
Harbin Institute of Technology, Shenzhen Graduate School, Shenzhen 518055, China and Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China;Shenyang Institute of Automation, Chinese Academy of Sciences, Shenyang 110016, China;Department of Automation and Computer-Aided Engineering, The Chinese University of Hong Kong, Shatin, NT, Hong Kong
Venue:
Advances in Engineering Software
Year:
2008

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Abstract

A heterogeneous object (HO) modeling system independent of any commercial CAD packages is introduced in this paper. CAD models can be converted into 2D slices with heterogeneous material information for the fabrication of rapid prototyping technique. In this framework, volumetric dataset (VD) is employed to represent the material variations, which lend the flexible manipulability to HO representation, while geometry model is used to describe the shape of an object, which guarantees the accuracy of final HO slices. Two schemes are used to evaluate the composition variations in this system. Ray casting is utilized to visualize the HO volumetric dataset.