半圆形拉深筋圆角半径及金属流动方向对拉深筋阻力的影响
那景新, 白霜, 刘海鹏, 闫亚坤

Effects of drawbead corner radius and metal flow direction on drawbead restraining force
NA Jing-xin, BAI Shuang, LIU Hai-peng, YAN Ya-kun
拉深筋试验装置效果图