Finite element analysis of the crimping process of the piston-slipper component in hydraulic pumps

Hydraulic pumps and motors are widely used in mobile equipment for construc tion, mining and agriculture. The piston-slipper component is one of the cr itical parts of ct hydraulic pump. A crimping process is used for connectin g the piston to the slipper component. Like most of the manufacturing proce sses that involve large deformations, high stresses are created in the slip per and piston during the crimping process. This paper presents a finite el ement method for the analysis of the stresses, strains, and forces associat ed with the crimping process. This method can be used in the optimization o f the piston. slipper and die designs. The commercial finite element packag e ANSYS was used to simulate the crimping process. The simulation procedure is used to obtain a better understanding of the effect of the die geometry on the crimping process. [S1050-0472(00)00303-2].