Topology optimization design and dynamic characteristics analysis of aircraft landing gear structure
In order to realize the lightweight of aircraft landing gear system under high efficiency load,a topology optimization model based on variable density method and optimization criterion algorithm was estab-lished with the structural stiffness under impact load as the constraint condition and the minimum mass as the design goal.According to this configuration,the external cylindrical structure is reconstructed,and the strength and stiffness of the optimized design area are checked.Finally,the landing gear landing vibration simulation model is established in Ansys Motion system,and the dynamic characteristics of the aircraft landing gear system before and after structural optimization are analyzed,and the correctness of the model is verified by comparing with the test data.The results show that compared with the original structure,the weight of the reconstructed model is reduced by 10.7%,the maximum equivalent stress is reduced by 16.2%,and the sys-tem buffering efficiency is increased by about 2.4%,which effectively improves the lightweight level and structural load efficiency of the landing gear system.The research results can provide some reference for the weight reduction design of aircraft landing gear system.
NETL
NSTL
万方数据
维普
