Forging ＆ Stamping Technology. 2014, (04) Core

Finite element analysis of 3D variable cross-section roll forming for DP980 high strength steel based on defect controlChinese Full Text

Guan Yanzhi;Li Qiang;Wang Yingshuang;Jia Fanghui;Chen Zhengyang;College of Sciences,Inner Mongolia University of Technology;College of Mechanical and Electrical Engineering,North China University of Technology;

Abstract: In the three dimensional variable cross-section roll forming,there exists non-controlled area because the roller group can only control one point on this curve when the conjugate space curve sweeps across space surface,which leading to "free deformation zone"at the bottom of plate in roll bending process,and then forming defects occure. Based on the three dimensional variable cross-section roll forming equipment with double rack single gear shaft structure,the defect control method was put forward,and the defect optimization simulation model was established based on ABAQUS. The whole process simulation of an automobile components forming with DP980 dual phase steel material was done so as to obtain the complex forming rules,roll forming force and springback prediction in sheet metal forming processes. The simulation results show that the effect of defect control method is obvious and the forming quality is better. Through forming experiment,the effectiveness of the defect control was further verified and the forming quality was consistent with the simulation results.

Keywords：

high strength steel; variable cross-section roll forming; forming defects; finite element analysis;

DOI：
10.13330/j.issn.1000-3940.2014.04.027
Series：
Subject：
Classification Code：
TG306

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Finite element analysis of 3D variable cross-section roll forming for DP980 high strength steel based on defect controlChinese Full Text

Guan Yanzhi;Li Qiang;Wang Yingshuang;Jia Fanghui;Chen Zhengyang;College of Sciences,Inner Mongolia University of Technology;College of Mechanical and Electrical Engineering,North China University of Technology;

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