摘要
针对变速箱空载试验台的飞轮系统进行了结构设计,并基于ANSYS Workbench有限元分析软件对其进行了模态分析。对于轴承座,地基和滚动轴承等并非是绝对刚性的情况,为了更好地模拟飞轮系统运行时的实际工况,对影响系统最大的轴承的支承刚度进行了计算,为系统添加了弹性约束。经过分析得出了飞轮系统的固有频率和临界转速,并通过尺寸修正,提高了低阶固有频率,改善了飞轮系统高速运转时的抗振性能。
The structure of the flywheel system on the no-load test bed of gearbox has been designed, and modal analysis is carried out on it by the finite element software ANSYS Workbench. According to the situation that the bearing pedestal, subgrade and rolling bearing are not rigid, in order to well simu- late actual conditions, a research is made on the bearing stiffness which has the largest impact on the sys- tem and finally the elastic support is successfully added to the system. Through the analysis, natural fre- quency and critical speed are obtained. Then by modifying the size, natural frequency is increased and the condition of vibration-proof ability of the flywheel system when it is in high speed is improved.
出处
《组合机床与自动化加工技术》
北大核心
2013年第3期84-86,共3页
Modular Machine Tool & Automatic Manufacturing Technique
关键词
飞轮系统
支承刚度
模态分析
flywheel system
bearing stiffness
modal analysis
