电沉积镍涂层钢板冲压过程的界面特性

Interface feature of electrodeposited nickel coating steel plate in stamping process

采用ABAQUS有限元软件对电沉积镍涂层钢板的冲压成形过程进行了模拟。并用ABAQUS内置的内聚力模型来表征电沉积镍涂层钢板的界面性能。计算表明：在冲压过程中,电沉积镍涂层钢板界面法向应力在-113.765-3 MPa之间,切向应力最大为50 MPa。分析发现,在冲压过程中任意时刻凹模圆角处的界面应力最大,最后通过变换压边力、冲头与凹模间隙、摩擦系数、圆角半径分析了界面破坏的情况,研究了这些工艺参数对界面的影响,该方法以及所得结果对板料成形的生产能起到一定的指导作用。

ABAQUS was used to simulate the stamping process for electrodeposited nickel coating plate.In the simulation,a built-in Cohesive zone model of ABAQUS was used to present electrodepsited nickel coating steel＇s interface performance.The computational results show that,at the interface,the normal stress is between-113.765-3 MPa and the maximum tangential stress is 50 MPa,and the maximum interface stress is at the die fillet during the process of stamping.Finally the case of delamination was analyzed by changing blankholder force,clerance between punch and die,friction faltor,and tool radii.This method can be used as a guidance for shell＇s forming manufactue.