摘要
多层波纹钢板转子阻尼器是利用干摩擦原理实现转子阻尼减振的支撑零件。这种阻尼器能在高低温等恶劣环境下工作,同时阻尼特性受转子偏心影响小,可以通过改变阻尼器钢板的厚度提高阻尼器的能量耗散性能。在有限元法和摩擦学原理的基础上进行理论分析,根据多层波纹钢板转子阻尼器的能量耗散分布,提出多层钢板阻尼器的能量耗散系数的计算方法。该方法首先通过有限元分析获得接触应力,然后采用Mindlin接触模型推导出两层干摩擦接触表面摩擦耗能的计算公式,最后得出转子阻尼器整体的能量耗散系数。试验证明了该计算方法是正确可行的,具有较高计算精度。
Multilayer corrugated steel rotor damper is a rotor dry friction damping supporting element .The damper can work under high or low temperature condition. The characteristics of the damper are affected little by the rotor eccentricity, and the energy dissipation performance of the damper can be improved by adjusting the steel thickness. According to the energy distribution of multilayer corrugated steel damper, a calculation method of energy dissipation coefficient is presented based on finite element method and tribology principle. In the calculation method, firstly the contact stress is calculated by finite element method. Then, a formula to calculate the energy dissipation due to friction between two layers of dry friction surfaces is deduced by using the Mindlin contact model. Finally, the energy dissipation coefficient of the whole damper is obtained. The calculation method is correct and feasible, and the precision is high, as verified by the experiment.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2008年第7期129-133,共5页
Journal of Mechanical Engineering
基金
国家自然科学基金(50275030)
高等学校学科创新引智计划(B07018)资助项目
关键词
计算方法
阻尼器
转子系统
耗散系数
Calculation method Damper Rotor system Dissipation coefficient
