采用本文所提出的模拟板材沿凸模圆角拉延过程的拉伸试验方法,比较了不同板材材质的摩擦效应。对镀锌钢板,软态和时效硬化铝合金板材的试验测定表明,摩擦系数的变化范围很大。试验说明,沿凸模表面的应变过程既受板材的应力应变曲线影响,也受其摩擦特性的影响。 Using the tensile test method proposed in this paper to simulate the drawing process of fillet along the punch, the friction effect of different sheet materials was compared. Tests on galvanized steel sheets, soft and aged hardened aluminum alloy sheets show that the coefficient of friction varies widely. The experiment shows that the strain process along the surface of the punch is affected not only by the stress-strain curve but also by the tribological properties of the sheet.