CAJ | 학술논문

基于Jones-Harris方法建立了调心球轴承的动力学模型,应用Newton-Raphson方法对轴承动力学方程组进行了求解,开发了相应的计算程序.完成了该轴承的离心力、陀螺力矩、接触载荷、接触角、径向变形与径向刚度等动态特性参数分析.分析结果表明:转速与载荷是影响接触角大小与接触载荷分布最主要的2个因素;滚子的离心力与陀螺力矩随着转速的上升而增大,在此影响下外圈接触载荷增大而内圈接触载荷减小;受离心力的影响,外圈的接触角减小而内圈的接触角增大,且随着转速的增加,内外圈接触角的差值越来越大;轴承的径向刚度随着转速的上升而下降,而滚道沟曲率系数也对轴承径向刚度有一定程度的影响.
기우Jones-Harris방법건립료조심구축승적동역학모형,응용Newton-Raphson방법대축승동역학방정조진행료구해,개발료상응적계산정서.완성료해축승적리심력、타라력구、접촉재하、접촉각、경향변형여경향강도등동태특성삼수분석.분석결과표명:전속여재하시영향접촉각대소여접촉재하분포최주요적2개인소;곤자적리심력여타라력구수착전속적상승이증대,재차영향하외권접촉재하증대이내권접촉재하감소;수리심력적영향,외권적접촉각감소이내권적접촉각증대,차수착전속적증가,내외권접촉각적차치월래월대;축승적경향강도수착전속적상승이하강,이곤도구곡솔계수야대축승경향강도유일정정도적영향.
A dynamics model of the self-aligning ball bearing is proposed based on the Jones-Harris method (JHM), and a computer program is developed to solve the equations by using the Newton-Raphson method. A parametric analysis of the centrifugal force and the gyroscopic moment, the contact loads, the contact angles, the radial deformation and the radial stiffness is carried out. The analytical results show that the applied loads and the rotational speed are two main factors that can influence the distributions of the contact loads and values of the contact angles. The centrifugal force and the gyroscopic moment increase with the increase in the rotational speed, resulting in the decrease of the inner raceway contact load and the increase of the outer raceway contact load. The outer raceway contact angle increases under the centrifugal force; on the contrary, the inner raceway contact angle decreases. Furthermore, the differences between the inner and the outer contact angles increase with the increase in the rotational speed. The higher rotational speed results in the decrease in radial stiffness for the self-aligning ball bearing, and the raceway curvature coefficient, to some extent, also influences the radial stiffness.