针对导弹发射装置振动和应力集中问题,利用Pro/E建立了托架结构的三维实体模型,并通过受力分析,得到了导弹托架的预载荷。同时,在有限元分析软件ANSYS中完成了存在预载荷的模态仿真与结构等效应力分布仿真,获得了结构模态振动频率、振型以及应力分布云图。依据分析应力分布情况,对托架结构进行优化,解决了应力集中问题。研究结果为提高导弹托架发射稳定性提供重要依据。

Aiming at the vibration and stress concentration of missile launcher, a three-dimensional solid model of bracket structure is es-tablished by using Pro/E, and the preload of missile carrier is obtained by structural analysis. At the same time, the modal simulation and the equivalent stress distribution simulation of the preload are completed in the finite element analysis software ANSYS, and the structural modal vibration frequency, vibration mode and stress distribution nephogram are obtained. Based on the analysis of the stress distribution, the bracket is optimized to solve the problem of stress concentration. The research results provide an important basis for improving launch-ing stability of missile carrier.