牛顿碰撞恢复系数评价下的碰撞力研究进展

In order to identify the application scope of impact force models in clearance joint, and more accurately describe the collision phenomenon in mechanical system, the Newton restitution coefficient is defined as evaluation index, and the joint of journal-bearing is used as example. Then a great number of numerical results are presented based on different impact force models with different coefficient of restitution. It can be concluded that the maximum value of impact force and deformation, as well as actual restitution have obvious difference for different impact forces, so the selection of impact force model should be considered comprehensively with initial collision conditions and material properties.