Transactions of Materials and Heat Treatment

Title：Study on soft interference checking method for automobile panel dies

Authors： Zhu Liang Zhang Zhibing Liu Yuqi Ke Junyi

Unit： Huazhong University of Science & Technology

KeyWords： automobile panel soft interference checking collision detection space partitioning triangular facet

ClassificationCode：TG385.2；TP391.72

year,vol(issue):pagenumber：2015,40(5):38-41

Abstract：

A kind of soft interference checking method was proposed. The method applies the spatial subdivision that is commonly used in collision detection. Global bounding box of objects was divided into several spatial grids with the same volume, and the surfaces of objects were discretized into triangular grid model that mapped to spatial grids. Finally, soft interference checking was realized on triangular facet of the same or the adjacent spatial grid. A soft interference checking system was developed based on the platform of Unigraphics NX with high calculation speed and precision. It can be used to check soft interference on automobile panel dies rapidly and can help to improve the efficiency and reduce errors in the design of automobile panel dies. In the end, the influence of the size of triangular facet and spatial grid on the calculation efficiency was analyzed through a case study.

Funds：

国家自然科学基金资助项目（51275184）

朱亮（1989-），男，硕士研究生章志兵（1978-），男，博士，讲师

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