拓扑优化机载控制台的整机随机振动分析与试验

摘要

Airborne console is an important part of aircraft electronic equipment and random vibration is the main factor to the fail-ure of its structure. On ANSYS Workbench software platform, the random vibration simulation analysis of an airborne console was car-ried out in the real working environment, and the direction displacements and the equivalent stress clouds of the whole machine based on traditional design and topology optimization design methods were obtained. The random vibration reliability test of the topology opti-mization console was carried out, and the random vibration acceleration response curve of a characteristic point was obtained. The re-sults of simulation analysis and practical reliability test show that, the topological optimization console structure has good stiffness and dynamic performance, and the console can meet the strength requirements and the structural design is reasonable and reliable. The es-tablished finite element analysis model is reasonable, and the simulation results obtained are credible. This provides a theoretical basis for the design of airborne equipment.%机载控制台是飞机电子设备的重要组成部分,随机振动是使其结构失效的主要因素.基于ANSYS Workbench软件平台对某机载控制台所处的实际工作环境进行随机振动模拟分析,分别获得了传统设计、拓扑优化设计下控制台整机方向的位移、等效应力云图;对拓扑优化控制台进行随机振动可靠性试验,获得了某特征点的随机振动加速度响应曲线.模拟分析和实际可靠性测试结果表明:拓扑优化控制台结构刚度大、动态性能好,满足强度要求,结构设计合理、可靠;所建立的有限元分析模型是合理的,所获得的仿真结果是可信的.这为机载设备的设计提供理论参考.