关键词: 空气弹簧；刚度特性；仿真分析；影响因素

Abstract: With a certain model of air spring as the research object, the stiffness characteristics of the membrane air spring are introduced. Based on nonlinear finite element analysis theory the finite element analysis method of air spring is the main factors affecting the stiffness of air spring are analyze, in which Mooney model is used to simulate rubber material and Rebar model is used to simulate cord layer. The results show that increasing the air spring volume leads to the reduction of stiffness, the stiffness increases with the increase of initial pressure, the stiffness increases with the increase of the angle of the capsule cord, the stiffness increases with the increase of piston shape and volume. The volume and initial pressure of air spring have more influence on the stiffness.

Key words: Air spring; Stiffness characteristics; Simulation analysis; Influencing factors