摘要
本文采用绕弯成形工艺将“日”字形截面型材弯曲成商用车防护梁。在实际加工成形过程中,型材常出现起皱、截面畸变等成形缺陷。为此,利用ABAQUS有限元软件对无芯模支撑型材成形过程进行深入的数值模拟,旨在分析缺陷形成机理。基于此分析,本文设计并研究了一种新型芯模——新型磁控芯模,该芯模不仅对“日”字形结构型材的弯曲成形表现出优异的成形质量,还能显著提升传统芯模成形工艺的性能。此外,通过改变弯曲半径、模具间隙等成形参数,本文探究了型材弯曲的极限工艺参数,在保证精度的前提下寻求极限工艺参数。
This paper adopts the roll bending forming process to bend profiles with a"日"shaped crosssection into commercial vehicle bumper beams.During the actual processing and forming process,profiles often exhibit forming defects such as wrinkling and cross-sectional distortion.To address this,an in-depth numerical simulation of the coreless mandrel-supported profile forming process was conducted using ABAQUS finite element software,aimed at analyzing the mechanism of defect formation.Based on this analysis,a new type of mandrel—a novel magnetically controlled mandrel—was designed and studied.This mandrel not only exhibits excellent forming quality in bending"日"shaped structural profiles,but also significantly improves the performance of the traditional mandrel forming processes.Moreover,by altering forming parameters such as the bending radius and die gap,the paper explored the limits of process parameters for profile bending,seeking to find the extreme process parameters while ensuring accuracy.
作者
李义
黄伟鹏
程敏
梁继才
LI Yi;HUANG Wei-peng;CHENG Min;LIANG Ji-cai(College of Materials Science and Engineering,Jilin University,Changchun 130022,China;School of Mechanical and Aerospace Engineering,Jilin University,Changchun 130022,China)
出处
《吉林大学学报(工学版)》
北大核心
2025年第11期3564-3574,共11页
Journal of Jilin University:Engineering and Technology Edition
基金
吉林省科技发展计划项目(20220201048,20210201109GX).
关键词
商用车防护梁
磁流变弹性体
力学测试
新型磁控芯模
commercial vehicle bumper beam
magnetorheological elastomer
mechanical testing
novel magnetically controlled mandrel
