某星载电子设备有限元分析及设计改进

文中利用ANSYS建立了某星载电子设备的有限元分析模型,对其进行模态分析,并在此基础上进行了随机振动响应分析,结果表明设备的刚强度满足系统要求.获得了某型器件安装处的加速度响应情况,结合有限元分析结果对结构进行局部设计改进,改进后最大加速度响应值降低了19.4％,并顺利通过了振动试验考核.研究表明,在设计初期采用有限元方法对设备结构性能进行仿真分析可以缩短研制周期,降低后续试验风险.

Finite Element Analysis and Design Improvement of a Satellite Electronic Equipment

In this paper, the finite element model of a satellite electronic equipment is established by ANSYS, the random vibration response is analyzed based on the modal analysis. Results show that the strength and stiffness of the equipment meet the design requirement. The acceleration responses at the locations of particular components are obtained. The local structure design is improved according to the results of the finite element analysis. The maximum acceleration response after improvement is reduced by 19.4%. The equipment withstands the vibration test successfully. The research indicates that simulation analysis for equipment structure performance using finite element method in early design stage is able to shorten development cycle and reduce the risk of subsequent tests.