摘要
基于有限元仿真优化设计手段,经拓扑优化、局部细化设计,提出了一种大悬臂、高刚度异型发动机隔热罩结构,此结构的动刚度1阶频率达到了总体指标要求。经试验验证,该结构的动刚度频率和仿真结果一致,为后续此类结构的设计提供了一种有效的思路和方法。
Based on finite element simulation and optimal design method,this paper proposes a large cantilever,high stiffness and special-shaped engine heat insulation through topological optimization and local refinement design.The first order frequency of fine stiffness meets the requirements of the overall index.The results show that the dynamic stiffness frequency of the heat shield structure is consistent with the simulation results.Multiple flight tests verify that the adapter works well.This provides design reference for the subsequent more payloads mission.It provides an effective idea for the design of such upper stage structure.
作者
李添骄
刘利明
王未
曹昱
李泽琛
姚瑞娟
LI Tianjiao;LIU Liming;WANG Wei;CAO Yu;Li Zechen;YAO Ruijuan(Beijing Institute of Astronautical Systems Engineering,Beijing 100076,China;China Academy of Launch Vehicle Technology,Beijing 100076,China)
出处
《宇航总体技术》
2020年第4期15-19,共5页
Astronautical Systems Engineering Technology
关键词
发动机隔热罩
异型
有限元
优化设计
Engine heat shield
Special-shaped
Finite element
Optimal design