material:SUS304

formalibility
thinning
failsure value
wrinkle
material holding force requires 75T per simulation, put 80T force on design. Part has wrinkle from 1st hit.
winrkle tendency
10mm before bottom up
5mm before bottom up

试用总结：材料开始工作时运行速度过快，产生皱纹

            1.调整拉伸珠，增加阻力，增加拉伸步骤

            2.通过压边器增加材料夹持力

1.adjust drawing bead, increase resistance force, add step to draw
2.increase blank holder force to 95T
winkle gone after change