球底筒形件表面摩擦系数对拉深成形影响的数值模拟

Numerical simulation of effect of friction coefficient about the spherical bottomed cylindrical parts surface on deep drawing process

通过ABAQUS软件对球底筒形件拉深过程进行数值模拟,得到球底筒形件模具表面摩擦系数对成形件厚度和材料流动性具有重要影响,且模具表面存在最优的摩擦系数分布。基于此,采用均匀试验,对模具表面的摩擦系数进行优化组合。模具表面摩擦系数优化组合后,成形件的最大减薄率降低了26.54%,成形件的厚度分布更加均匀,均匀度提高24.87%;模拟结果为模具表面摩擦系数的主动优化设计制造提供理论依据。

The deep drawing process of spherical bottomed cylindrical part has been simulated by use of ABAQUS software.It is obtained that the friction coefficient of tool surface for spherical bottomed cylindrical part has important effect on parts thickness and material flow.There is optimum friction coefficient distribution on the tool surface.The uniform experiment has been used to design the optimal distribution of friction coefficient on tool surface. With optimized friction coefficient,he biggest thinning rate of the forming parts has been reduced by 26.54% .The thickness of the forming parts becomes more uniform, and the uniformity increases by 24.87% .The simulation result provides theoretical reference for active optimized design and manufacture of the friction coefficient on tool surface.