冷轧薄板成形平面应变状态极限减薄率计算方法及应用  

The calculation method and application of limit thinning rate in strain state of cold-rolled sheet plane

作　　者：张博凡 李瑞杰 邹洋 

机构地区：[1]上汽通用汽车有限公司冲压工艺科,上海201206

出　　处：《模具工业》2017年第3期21-23,共3页Die & Mould Industry

摘　　要：针对薄板成形平面应变区域开裂风险高的问题,介绍了极限减薄率的计算方法,同步工程阶段用极限减薄率定量判断平面应变区的成形性,能够准确预测零件的开裂,保证仿真与现场生产零件的一致性,提高试模效率。In order to reduce the cracking risk in the plane strain zone of a cold-rolled sheet, the calculation method of limit thinning rate was presented. The limit thinning rate was used to quantitative judge the formability of plane strain zone in simultaneous engineer- ing stage, which could accurately predict the cracking of parts, and ensure the conformity between the simulation and practical production parts.

关 键 词：轴向拉伸 冷轧薄板 平面应变 减薄率 开裂 

分 类 号：TG76[金属学及工艺—刀具与模具]