摘要
以某可靠性试验台用异步伺服电机安装平台为研究对象,拟对其动态特性开展研究。利用ANSYS软件建立安装平台结构有限元模型,对结构在不同预应力状态下的模态进行仿真,确定不同状态下结构的固有频率和振型,分析系统隔振效率随工作频率的变化规律,确定系统在常用工作频率下的隔振效率。基于谐响应仿真,研究电机底座上表面的位移、应力及应变分布,分析最大响应点随激励频率的变化规律,进而确定工装平台的振动敏感区域。上述研究为其它安装平台机械结构的动态优化设计奠定了理论基础。
Taking the asynchronous servo motor installation platform for reliability test bench as the research object, its dynamic characteristics are studied. Finite element model of installation platform structure is es- tablished by software ANSYS. Different pre-stress modal simulation of the structure are carried out, and na- ture frequencies and modal shapes are determined under different situations. Change rules between the vibra- tion isolation efficiency of system with working frequency are analyzed, and vibration isolation efficiency of system under normal working frequency is determined. Distribution of displacement, stress and strain are studied based on harmonic response analysis. Change rules between the maximum response points with exci- tation frequency are analyzed, and vibration sensitive areas of installation platform are found. The studies lay a theoretical foundation for the dynamic optimal design of other installation platform mechanical structures.
出处
《组合机床与自动化加工技术》
北大核心
2017年第8期40-43,47,共5页
Modular Machine Tool & Automatic Manufacturing Technique
基金
河北省自然科学基金青年科学基金(E2017203129)
燕山大学基础研究专项课题青年课题(16LGB001)
关键词
异步伺服电机
安装平台
谐响应
隔振
asynchronous servo motor
installation platform
harmonic response
vibration isolation
