Contact-impact analys with clearance hinge in flexible multi-body system

Hinge in mechanical systems exist small clearance and contact deformation, cause the system to the wear and tear, noise, vibration, reliability reduce or even failure . Therefore, the hinge clearance and the impact of flexible components in kinetic models should be considered. In this paper, a nonlinear spring-damper hinge clearance model is considered to establish mechanical system structure of dynamic equations [4~6], through a four-bar linkage hinge with multi-clearance rotation of ADAMS dynamic simulation for dynamics simulation study. Simulation results show that hinge clearance and link flexible in Four-link mechanism dynamics have a great impact on performance: connection with the clearance lead to pin holes to produce a series of collisions, and a larger initial impact force; After consideration of flexible components, impact force reduced at the clearance, contact time increased, contact-impact areas expand and clearance also caused disturbance of the rod angular velocity of the linkage.