深圳大学学报（理工版）Issue(3)：233-238,6.DOI:10.3724/SP.J.1249.2014.03233
基于VBHF的差厚激光拼焊圆筒件成形仿真研究
Influence of variable blank holder force on the formability of tailor-welded blank with different thickness
摘要
Abstract
To study the influence of variable blank holder forces on the formability of tailor-welded blank ( TWB) , cylinder-shaped parts with different thicknesses were used, and two kinds of variable blank holder force ( VBHF) control schemes were designed. The forming limit depth, weld-line movement, strain path variations near the fracture zone and strain distribution changes across the weld-line were obtained. The results show that there is no inevitable connection between the forming limit depth and the amount of weld-line movement; the strain path of fracture zone near the weld-line is close to the plane strain state, while the strain path of the punch fillet is a segmented strain state which changes from a tension and compression state to a biaxial stretching state; with the increase of BHF on the thinner/thicker side, the strain concentration of thinner side will avoid the generation of rupture defects eventually.关键词
金属压力加工/变压边力/激光拼焊板/成形性能/焊缝/应变路径/应变分布Key words
metal pressure working/variable blank holder force/tailor-welded blank/formability/weld-line/strain path/strain distribution分类
矿业与冶金引用本文复制引用
王金轮,兰凤崇..基于VBHF的差厚激光拼焊圆筒件成形仿真研究[J].深圳大学学报（理工版）,2014,(3):233-238,6.基金项目
国家“十二五”科技支撑计划项目(2011BAG03B02) （2011BAG03B02）
深圳大学科研基金面上资助项目(00035695)@@@@National “Twelfth Five-Year” Plan for Science & Technology (2011BAG03B02) （00035695）
Natural Science Foundation of Shenzhen University (00035695) （00035695）
