拼焊板成形极限图特征研究  

Investigation on Forming Limit Diagram Characteristics for Tailor Welded Blanks

作　　者：胡巧声[1,2] 倪锋[2,3] 林建平[1] 

机构地区：[1]同济大学机械工程博士后流动站,上海201804 [2]上海汽车工业(集团)总公司,上海200041 [3]南京依维柯汽车有限公司,南京210028

出　　处：《中国机械工程》2011年第10期1232-1235,共4页China Mechanical Engineering

基　　金：高等学校博士学科点专项科研基金资助项目(20070247025)

摘　　要：对不同条件下拼焊板成形极限图的特征进行了研究,从弱侧材料先达到变形极限的角度来诠释拼焊板成形过程中的破裂现象。拼焊板成形极限图临界线的位置高低仅由破裂处材料的属性(材料性能与厚度)来决定,影响因素的不同所改变的是其破裂时所能获得的极限应变状态的范围。Through the investigation of FLD characteristics for TWB under different conditions,the cracking in TWB forming process were explained by that the weak-side base material was up to its forming limit in advance.The position of FLD critical curve was determined only by material property in cracking regions（material performance and thickness）,and different factors mainly affect the range of limit forming state when cracking occurs.

关 键 词：拼焊板 成形极限图 应变状态 成形能力 

分 类 号：TG113.26[金属学及工艺—物理冶金]