Transactions of Materials and Heat Treatment

Title：Adaptive element remesh in simulation of ring rolling process

Authors： ZHANG Xue-bin WU Ming-hua LI Zhi-gang

Unit： Henan University of Science and Technology FAWVolkswagen Automotive Company Ltd. Huazhong University of Science and Technology

KeyWords： ring rolling finite element simulation auto adaptive element remesh

ClassificationCode：TG335.19

year,vol(issue):pagenumber：2012,37(2):171-174

Abstract：

In FEM simulation of ring rolling process, element distortion is aroused by large deformation. An adaptive mesh refinement and remesh algorithm was studied. Based on analyzing the mesh distortion, a remesh activation criteria was put forward according to the discrete error of space domain. Considering the features of ring rolling, the new mesh was generated by an improved gridbased algorithm through establishing standard ring grids. The field variables inheritance between the new and original meshes was accomplished by variable smoothing and mapping transformation. Finally, the validity of the adaptive mesh refinement and remesh algorithm is proved by computation examples.

Funds：

国家重大专项子课题资助项目(2009ZX04014-074-05);华中科技大学材料成形与模具技术国家重点实验室开放基金资助项目(09-12);河南科技大学博士科研启动基金资助项目;河南科技大学校基金资助项目(2004ZY032)

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