Design And Experimental Study Of Metal Rubber Satellite Damping Butt Ring

With the development of aerospace industry,the mechanical environment of satellite launching is becoming more and more severe,which puts forward higher requirements for the design of its structure.Therefore,it is of great practical significance to develop a new structure which can effectively restrain the carrier dynamic environment during satellite launch,adapt to a variety of vehicles and satellite loads,replace the original docking ring to carry the payload,and conduct structural analysis and dynamic test analysis on it.Based on the dynamic environment of a certain type of satellite and aiming at a small satellite platform,this paper designed a metal rubber vibration damping butt ring,and carried out simulation analysis and test verification of the vibration damping performance of the metal rubber butt ring.The main work includes:Based on the dynamic environment conditions of a certain type of satellite,the appraised vibration test commonly used in aerospace was carried out.The data obtained from the test were collected and analyzed.The metal rubber material was selected as the core material of the vibration reduction butt ring in this paper,which laid a reference foundation for the subsequent structural design and dynamic characteristics analysis.According to the output results of the simulated star body under transverse and longitudinal vibration excitation in the identification test,combined with the constraint conditions of interface size and the requirements of dynamic performance index,the structure and parameters of the metal rubber vibration damping butt ring were designed,and the physical and mathematical models of the whole structure were established.On this basis,the static and dynamic characteristics of the metal rubber damping unit were tested,and the influence of the relative density of metal rubber material on the static and dynamic characteristics was discussed.The relative density range of metal rubber was selected according to the test results,which met the overall design parameters of the simulation star.A simulation model was established to simulate the whole star and the simulated star object was processed.The authentication-level dynamic test was carried out for the simulation model and object.The dynamic test of the simulation model was carried out in ANSYS Workbench finite element software.After collecting the data,the experimental and simulation results are compared and analyzed.In conclusion,this paper designed the metal rubber satellite vibration damping butt ring for a certain type of satellite,and carried out the corresponding experimental research and analysis.Although the metal rubber is applied in the specially designed structure,the method can be used in the design,processing and performance test of other similar metal rubber vibration damping devices,and the research method can be used in the analysis and design optimization of similar structures.