Experimental Study On Numerical Simulation And Numerical Simulation Of Buckle Collision Of Simply Supported Beams

Impact is the sudden changes of the motion state of the system which happens in a very short time. The process of a common impact may contain several collisions under high resolution along with the elastic-plastic deformation due to the impact loading. So far sub-impact is not well understood, which has been placed in a marginal position for a very long time. In the present paper, a numerical method is used to discuss the problem of the transverse impact of a rigid sphere on a simple supported elastic-plastic steel beam, combined with experiments measuring the signals of contact time, impact stresses and strains. Three-dimensional finite element method is used to establish a complete numerical model through Pro-E and Hypermesh. The results of the impact process are calculated by Ls-Dyna. The FEM and experiment results agree very well to indicate the numerical model’s reliability and homogeneity. The coefficient of restitution measures the collision energy loss:the difference between the work done to compress the bodies and the work done by the release of strain energy during restitution. The coefficient of restitution of the transverse sub-impact of a rigid sphere on the simple supported beam is discussed through numerical methods based on the reliable model in this paper. The FEM model has also been used to investigate the collision process and impact mechanism.