关键词: 结构动力学, 斜碰撞, 结构柔性

Abstract: In this paper, to counter a flexible beam undergoing large overall motion impacting a fixed slope surface under the effects of grativity, the normal contact model is established based on the Hertz theory and non-linear damping term, the tangential contact model is developed by adopting linear tangential contact stiffness to consider the effects of friction force during impact process, and the consistent linear dynamic model including impact is derived by using mode assumption method and Lagrangin equation. Finally, some numerical simulations are executed in the case of the different stiffness of the flexible beam, the effects of the structural flexibility on the system impact dynamics are investigated.

Key words: multi-body dynamics, oblique impact, structural flexibility