基于虚拟样机技术的三维振动台结构优化设计

Structural optimization design of 3D vibration platform based on virtual prototype technology

首先介绍了三维振动台的工作原理,建立了振动台的虚拟样机,然后采用ANSYS对虚拟样机进行了动力学分析,得到了各阶频率、振型与振幅,分析发现响应幅值较小,无法满足设计要求。在此基础上,对三维振动台进行了结构优化,优化前后的动力学分析表明:优化后的幅值有大幅度提高,达到了设计要求。

Firstly the working principle of 3D vibration platform was introduced and its virtual prototype was introduced. After that by the use of ANSYS a dynamics analysis on virtual prototype was carried out and the frequency, vibration type and amplitude of each order were obtained. It has been discovered that the response amplitude value was rather small and it was unable to satisfy the requirements of design. Based on this, the structural optimization has been carried out on the 3D vibration platform. Dynamics analyses before and after optimization showed that the amplitude value has been increased in great extent after optimization and thus reached the requirements of design.