444 / 2022-10-11 14:33:28

Analysis of Vibration Damping Performance of Thermoplastic Composite Structures

Lightweighting; topology optimization; satellite mounts; vibration damping

Abstract: Aiming at the lightweight design requirement of the support of a satellite integrated controller and the advantages of topology optimization method in structural design, a new structural design method of the support of the satellite integrated controller is proposed. Firstly, the topology optimization method is used to find the optimal force transmission path in the feasible design space of the structure, and then the corresponding structure is abstracted based on this method, finally, considering the size and the machining/using constraints of the structure, geometric reconstruction is carried out to obtain the structural design scheme. Carrying capacity analysis, modal analysis and random response analysis of the optimized configuration are carried out to calculate the frequency and power magnification of the satellite support, on the premise that the load and boundary of the bracket are equivalent to those of the traditional configuration, the bearing capacity of the bracket and the random vibration test are verified, compared with the traditional support, the mass and dynamic magnification coefficient of the satellite integrated controller support made of short carbon fiber reinforced thermoplastic composites are reduced by 44.84% and 33.72% , respectively, the optimized design has played a good vibration reduction effect.