Transactions of Materials and Heat Treatment

Title：Simulation and analysis on U-shaped beam roll bending based on LSDYNA

Authors： Liu Yiheng 1 Fu Aijun1 Zhao Binjian2 Yang Jinbo1 Luo Wengang1

Unit： 1.School of Mechanical and Automotive Engineering Guangxi University of Science and Technology 2.School of Mechanical Engineering Guangxi University

KeyWords： high-strength steel roll bending residual stress rolling edge wave defect

ClassificationCode：TG335.4+4

year,vol(issue):pagenumber：2023,48(12):41-47

Abstract：

To solve the problem of difficult control of roll bending dimension for high-strength and large-thickness plates, for the roll bending of high-strength steel thick plate U-shaped beam, a simulation model was established, and the forming process was simulated by nonlinear finite element software. Then, the stress distribution in the corner part was changed by introducing the rolling passes which was compared with the stress distribution of only simple bending pass. The simulation results of different rolling distances show that the stress in the corner part after rolling is smaller and more dispersed than that of only bending pass, which improves the cross-sectional shrinkage problem. By adjusting the spacing between roll stations, the influence on the edge wave defects was summarized. The larger the spacing between roll stations, the more serious the edge wave defects. Finally, through experiments, the measured dimensional parameters of actual processed parts and the simulation parameters were compared. The error compared with the target value is within 1% , which meets the design and production requirements.

Funds：

广西科技重大专项《重型专用汽车轻量化制造关键技术研究与产业化》（桂科AA22068055-2)

作者简介：刘忆恒（1996-），男，硕士，工程师 E-mail：511684740@qq.com 通信作者：傅爱军（1972-），男，硕士，教授级高工，硕士生导师 E-mail：2394523982@qq.com

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