Collision dynamics modelling and testing of compliant buffering adsorption system under microgravity environment

Abstract Contact collision has always been a very important and difficult problem in the fields of aerospace and mechanical engineering. The dynamics modelling and test of the impact collision process of the flexible buffering adsorption mechanism to a thin-walled plate under low-speed conditions in microgravity environment were studied. A multi-rigid-flexible coupling dynamics model of the entire system including the compliant buffering adsorption subsystem and the thin-walled plate subsystem was proposed by applying transfer matrix method for multibody systems, which has the advantages of not requiring the global dynamics equation of the system, low order of the system matrix, and high programming. The dynamics model of the thin-walled plate subsystem was modeled as a combination of mass-less beams and lumped mass to describe its flexible vibration characteristics. A nonlinear spring damping model is used to simulate the continuous collision force between the compliant buffer absorption subsystem and the thin-walled plate subsystem. Combined with the topology diagram of the system dynamics model, the overall transfer equation of the system is derived. A microgravity horizontal impact test platform was designed and established. Finally, the correctness and effectiveness of the proposed method were verified through the comparison of simulation and test results.