舰船角接触轴承的加速寿命动力学模型研究  

Research on accelerated life dynamic model of angular contact bearing for ship

作　　者：宋少雷 安海鹏 王迪 SONG Shaolei;AN Haipeng;WANG Di(Shenyang Bureau of Sea Decoration,Harbin 150078,China;The 703 Research Institute of CSSC,Harbin 150078,China)

机构地区：[1]海装沈阳局,黑龙江哈尔滨150078 [2]中国船舶集团有限公司第七〇三研究所,黑龙江哈尔滨150078

出　　处：《舰船科学技术》2024年第22期136-144,共9页Ship Science and Technology

摘　　要：以舰船四点角接触球轴承为研究对象,以轴承加速寿命为目标,在滚动轴承动力学、赫兹接触理论及弹性流体动力润滑理论基础上,综合考虑轴承各元件间相互作用、钢球与保持架间碰撞、轴承润滑状态等关键因素,建立四点接触球轴承动力学微分方程组,采用S-R变步长自适应积分算法求解动力学方程组。结合滚动轴承加速寿命理论,以动力学分析结果为边界输入,基于材料本构关系,使用Ansys以及nCode有限元分析软件建立四点角接触球轴承保持架疲劳寿命估计模型,根据确定的强化因子,采用改变负荷和转速的形式完成对轴承疲劳寿命的评估。研究表明,当量动负荷对轴承加速寿命的影响最大,其次是轴向负荷;转速和径向负荷对轴承加速寿命影响最小;转速对保持架寿命的影响最大。The four-point angular contact ball bearing of ship is taken as the research object,and the accelerated life of bearing is taken as the goal.Based on the dynamics of rolling bearings,Hertz contact theory and elastohydrodynamic lubrication theory,the key factors such as the interaction between bearing components,the collision between steel balls and cages,and the lubrication state of bearings are comprehensively considered.The dynamic differential equations of four-point contact ball bearing are derived,and the dynamic equations are solved by S-R variable step size adaptive integral algorithm.Combined with the accelerated life theory of rolling bearings,the dynamic analysis results are used as the boundary input.Based on the material constitutive relationship,the fatigue life estimation model of four-point angular contact ball bearing cage is established by using Ansys and nCode finite element analysis software.According to the determined strengthening factor,the fatigue life of the bearing is evaluated by changing the load and speed.The research shows that the equivalent dynamic load has the greatest influence on the accelerated life of the bearing,followed by the axial load,and the speed and radial load have the least influence on the accelerated life of the bearing.The rotational speed has the greatest influence on the life of the cage.

关 键 词：四点角接触球轴承 加速寿命评估 轴承动力学 S-R变步长自适应积分算法 

分 类 号：TK221[动力工程及工程热物理—动力机械及工程]