日字形防护梁绕弯成形形变数值模拟  

Numerical simulation on deformation of protective beam with“日”-shaped section during rotary draw bending

作　　者：梁策[1] 黄富雷 梁继才[1,2] 李义 LIANG Ce;HUANG Fu-lei;LIANG Ji-cai;LI Yi(College of Materials Science and Engineering,Jilin University,Changchun 130022,China;Chongqing Research Institute,Jilin University,Chongqing 401123,China)

机构地区：[1]吉林大学材料科学与工程学院,长春130022 [2]吉林大学重庆研究院,重庆401123

出　　处：《吉林大学学报（工学版）》2023年第12期3397-3403,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：吉林省科技发展计划项目(20220201048GX).

摘　　要：使用有限元模拟方法,建立了“日”字形截面防护梁绕弯成形过程的有限元模型,并对其可靠性进行验证。解决了高强钢防护梁产品质量预测问题,得到了芯模种类、型材厚度和绕弯成形速度对截面变形的影响规律。结果表明,带有自锁装置的柔性芯模对截面变形的抵制效果最好。随着型材厚度的增加,截面变形减小;随着弯曲速度的增大,截面变形先减小后增大。该方法为防护梁产品成形质量预测提供了理论依据。Finite element simulation method was used to establish the finite element model for the bending process of a“日”-shaped protective beam,and the reliability of model has been verified.The problem of predicting the quality of high-strength steel protective beams has been solved,and the influence of core mold type,profile thickness,and bending forming speed on section deformation has been obtained.The results indicate that the flexible core mold with a self-locking device has the best resistance to crosssectional deformation.As the thickness of the profile increases,the deformation of the cross-section decreases.As the bending speed increases,the cross-sectional deformation first decreases and then increases.This method is of great significance,which has provided a theoretical basis for predicting the forming quality of protective beam products.

关 键 词：材料加工工程 日字形截面型材 绕弯成形 有限元模拟 截面变形 

分 类 号：TG356[金属学及工艺—金属压力加工]