文章摘要
大型U形板材工件渐进滚弯成形数值模拟
Numerical Simulation of Multiple-step Roll-bending Forming of Large-scale Sheet Metal with U Shape
Received:October 10, 2011  Revised:November 10, 2011
DOI：
中文关键词: 渐进滚弯  数值模拟  几何规划  拟合
英文关键词: incremental roll-bending  numerical simulation  geometric plan  fitting
基金项目:上海市教育委员会重点学科建设项目（J51501）
Author NameAffiliation
HU Da-chao Shanghai Institute of Technology, Shanghai 200235， China 
LI Guo-qing 1.Shanghai Institute of Technology, Shanghai 200235， China；2.East China University of Science and Technology, Shanghai 200237， China 
FU Ze-min Shanghai Institute of Technology, Shanghai 200235， China 
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中文摘要:
      利用ABAQUS有限元分析平台，对大型U形板材工件渐进滚弯成形及其回弹过程进行数值模拟。针对半椭圆形工件形状，提出用半径不同的5段圆弧逼近的几何规划。在此基础上，合理设计滚弯道次，调整ABAQUS参数设置。用模拟优化的工艺参数成形加工半椭圆形板材工件，经origin8拟合配准，其各段曲率半径最大误差小于5%。模拟结果表明，用渐进滚弯方法成形加工半椭圆形工件是可行的。
英文摘要:
      Numerical simulation of multiple-step incremental roll-bending forming and spring back of large-scale sheet metal with U shape was implemented using ABAQUS. In view of the semi-ellipse shape of workpiece, a geometric plan using five arcs with different radii to approach the original shape piecewise was proposed. On the basis of the programming, reasonable arrangement of the rolling steps was carried out, the parameters in ABAQUS were adjusted. The largest error of curvature radii of different arcs was less than 5% after simulation of the sheet metal forming according to optimized process fitting with origin8. The results show that the incremental roll-bending method forming the semi-ellipse shape workpiece is feasible.
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