Transactions of Materials and Heat Treatment

Title：Filling algorithm on complex large hole in die face design for automotive cover panels

Authors：

Unit：

KeyWords：

ClassificationCode：TG386. 3; TP319

year,vol(issue):pagenumber：2023,48(1):53-59

Abstract：

In order to solve the problem of filling quality for complex large holes in die face design of automotive panels, a hole filling algorithm based on energy optimization mesh and partition surface fitting was proposed, which used control lines to partition the holes topologically to reduce the difficulty of filling large holes. Then, the filling surfaces were constructed indirectly to improve the stability of complex hole filling by using the method of mesh pre-filling and partition surface fitting. Furthermore, the strategy of partition triangulation and overall mesh optimization was adopted to construct the patching mesh, and the generated mesh had both overall smoothness and partition independence, which ensured the correctness of the subsequent partition fitting surfaces. Finally, the algorithm was used to test the hole filling of the actual automotive panels. The results show that the filling surface generated by the algorithm is of good quality and meets G0 continuity at the boundary. The proposed algorithm supports the automatic partition construction of filling surfaces based on control lines, which has good filling stability and quality. Moreover, the proposed algorithm is suitable for filling complex wireframe holes, and has engineering application value.

Funds：

广东省重点领域研发计划项目(2021B0101220001)

作者简介: 李　行(1997-), 男, 硕士 E-mail: itslixing@ 163. com 通信作者: 章志兵(1978-), 男, 博士, 副教授 E-mail: zhangzb@ hust. edu. cn

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