[1]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,2014,31(3):233-238.[doi:10.3724/SP.J.1249.2014.03233]
　Wang Jinlun and Lan Fengchong.Influence of variable blank holder force on the formability of tailor-welded blank with different thickness[J].Journal of Shenzhen University Science and Engineering,2014,31(3):233-238.[doi:10.3724/SP.J.1249.2014.03233]
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基于VBHF的差厚激光拼焊圆筒件成形仿真研究()
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《深圳大学学报理工版》[ISSN:1000-2618/CN:44-1401/N]

卷:
第31卷
期数:
2014年第3期
页码:
233-238
栏目:
材料科学
出版日期:
2014-05-20

文章信息/Info

Title:
Influence of variable blank holder force on the formability of tailor-welded blank with different thickness
文章编号:
201403003
作者:
王金轮1; 兰凤崇2
1) 深圳大学机电与控制工程学院，深圳518060
2) 华南理工大学机械与汽车工程学院，广州510640
Author(s):
Wang Jinlun1 and Lan Fengchong2
1) College of Mechatronics and Control Engineering, Shenzhen University, Shenzhen 518060, P.R.China
2) School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, P.R.China
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
Keywords:
metal pressure working; variable blank holder force;  tailor-welded blank;  formability;  weld-line;  strain path;  strain distribution
分类号:
TG 386.3+2
DOI:
10.3724/SP.J.1249.2014.03233
文献标志码:
A
摘要:
为研究变压边力对差厚拼焊板成形性能的影响，以差厚拼焊圆筒形件为例，设计2种随位置、行程不同的变压边力方案，得到了差厚激光拼焊圆筒形件的成形极限深度、焊缝移动量、破裂危险点处应变路径及焊缝两侧应变分布的变化情况. 研究表明，薄、厚侧压边力的大小和分布对破裂危险点应变路径和安全裕度的影响很大，合理的变压边力分布可以调节焊缝两侧材料变形的均匀性，提高成形极限深度；通过变压边力技术可以控制薄侧破裂危险点的应变路径由拉压应变状态向双向拉伸应变状态过渡，从而调节破裂失效的位置，有效提高差厚激光拼焊圆筒件的冲压成形性能.
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.

参考文献/References:

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备注/Memo

备注/Memo:
Received：2014-01-13；Accepted：2014-04-17
Foundation：National “Twelfth Five-Year” Plan for Science & Technology (2011BAG03B02); Natural Science Foundation of Shenzhen University (00035695)
Corresponding author：Professor Lan Fengchong. E-mail: fclan@scut.edu.cn
Citation：Wang Jinlun,Lan Fengchong.Influence of variable blank holder force on the formability of tailor-welded blank with different thickness［J］. Journal of Shenzhen University Science and Engineering, 2014, 31(3): 233-238.（in Chinese）
基金项目：国家“十二五”科技支撑计划项目（2011BAG03B02）；深圳大学科研基金面上资助项目（00035695）
作者简介：王金轮（1984—），男（汉族），山东省潍坊市人，深圳大学讲师、博士. E-mail: wangjl84@szu.edu.cn
引文：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，2014，31（3）：233-238.
更新日期/Last Update: 2014-05-04