差厚拼焊板拉深方盒形件成形极限及焊缝移动

采用Dynaform专业板料成形软件,对差厚异质激光拼焊板拉深方盒形件的成形过程进行了研究.结果表明:母材厚度差对压边力的合理范围以及盒形件的成形极限和焊缝移动量有很大的影响;两种母材所占比例不同(焊缝位置变化)时,比例差别越大,成形极限越小,薄侧材料所占比例越大,焊缝移动量也越大.并根据两种母材在成形过程中的应力状态和应变状态分析了这些现象.

Forming limit and weld seam movement of TWBs with different thicknesses in square cup

The drawing process of square cup using laser TWBs(tailored welding blanks) in different thicknesses and materials was studied using Dynaform,a professional software on sheet forming.The results show that the thickness difference of the two parts has significant influence on reasonable ranges of binder forces,forming limit and weld seam movement.When the proportion of the two parts(the position of weld seam) is changed,the larger the difference of proportions is,the less the forming limit will be,the more t...