惯性平台轴端结构仿真分析与改进设计

轴端结构是惯性平台系统的主要承载部件，并且实现平台环架结构的转动自由度。因此，轴端构件需要具备足够结构强度和刚度保证惯性平台系统在空间飞行、地面运输等振动冲击工况下可靠工作。本文以某型号惯性平台轴端结构件为研究对象, 探讨了轴端结构件的有限元分析方法。利用HyperWorks 11.0分析软件, 进行了结构静力和模态分析，并对原始的模型结构进行了改进设计。改进后的轴端机盖在相同工况下，结构的强度和刚度上均得到有效提高。

The Simulation Analysis and Improvement Design for the Shaft Structure of the Inertial Platform System

In the inertial platform system, the shaft structure is the main supporting component, which also realizes the rotational degrees of freedom for the ring frame structure. Consequently, it is important to obtain the adequate structural strength and structural stiffness for the shaft structure which could guarantee the working reliability when the inertial platform system is imposed on the vibration and shock in the load cases such as the space flying, ground transporting and so on. Based on the shaft structure of the inertial platform system, this paper takes a study on the finite element method for the shaft structure. With the software of HyperWorks 11.0, the static analysis and modal analysis are carried out. The improvement design is given at last. In the same load cases, structural strength and structural stiffness for the improved shaft structure are increased effectively.