基于ADAMS的滚滑轴承摩擦力矩研究

Friction torque for roller-sliding bearing based on ADAMS

针对在高速、重载的情况下轴承摩擦力矩较大,极容易发热和磨损,导致使用寿命大大降低的问题,基于轴承摩擦力矩测量原理建立了滚滑轴承的摩擦力矩数学模型,并以此为基础利用ADAMS软件建立了滚滑轴承的动力学仿真模型。考虑到摩擦力矩数值的波动性,对变化规律进行了分析,并给出了滚滑轴承启动摩擦力矩和动摩擦力矩在仿真试验中的提取方法;研究了不同径向载荷、转速、滚子与滑块之间的间隙和径向游隙对摩擦力矩的影响;借助SKF轴承摩擦力矩计算器,验证了仿真模型的正确性。研究结果表明:4种不同工况结构参数对滚滑轴承启动摩擦力矩和动摩擦力矩都有一定影响,该结果可为滚滑轴承降低摩擦力矩设计提供参考依据。

Aiming at the problem that the friction torque of the bearingwas large,very easy to heat and be worn down,resulting in a greatly reduced service life in the case of high speed and heavy load,based on the principle of bearing friction torque measurement,the friction torque mathematical model of roller-sliding bearing was established.Based on this,the dynamic simulation model of roller bearing was established by using ADAMS software.Considering the fluctuation of friction torque,the variation law was analyzed and the extraction method of starting friction torque and dynamic friction torque of roller-sliding bearing was given.The effects of radial load,speed,clearance between roller and slider and radial clearance on friction torque were studied.The correctness of the simulation model was verified by SKF bearing friction torque calculator.The results indicate that the structural parameters of four different working conditions have a certain influence on the starting friction torque and the dynamic friction torque of the roller bearing,providing a reference for the design of reducing friction torque of the roller bearing.