循环次数对主轴承磨损仿真结果的影响研究  

Influence of cycle times on the simulation results of main bearing wear

作　　者：杜祥宁 张艳艳 刁子宇 孙楠楠 张恒靖 刘震涛[2] DU Xiang-ning;ZHANG Yan-yan;DIAO Zi-yu;SUN Nan-nan;ZHANG Heng-jing;LIU Zhen-tao(State Key Laboratory of Engine Reliability,Weifang 261061,China;the Power Machinery&Vehicular Engineering Institute,Zhejiang University,Hangzhou 310027,China;Zhejiang Fangyuan Test Group Co.,Ltd.,Hangzhou 310027,China)

机构地区：[1]内燃机可靠性国家重点实验室,山东潍坊261061 [2]浙江大学动力机械及车辆工程研究所,浙江杭州310027 [3]浙江方圆检测集团股份有限公司,浙江杭州310027

出　　处：《机电工程》2021年第2期228-233,共6页Journal of Mechanical & Electrical Engineering

基　　金：内燃机可靠性国家重点实验室开放基金资助项目(skler-201807)。

摘　　要：为确定主轴承磨损预测中的仿真工况参数—循环次数的合适取值,将动力学仿真技术和主轴承润滑分析运用到了内燃机曲轴系仿真计算中,建立了某型服役柴油机曲轴系的多体动力学和润滑耦合模型。基于经典Archard磨损理论模型,设置多组循环次数值分别对主轴承磨损进行了仿真计算;选取部分主轴承的最大磨损深度和磨损轮廓进行了比较分析,总结了最大磨损深度及轴瓦磨损轮廓随着循环次数增加的变化规律。研究结果表明:为兼顾计算成本和可信性,在仿真简化工况设计中选取循环次数为3时进行磨损仿真计算较为合适;以上结论为主轴承磨损仿真预测工作的优化提供了指导和建议。In order to investigate the appropriate value of one of the simulation parameters, cycle index in the wear prognosis of main bearing, the method of dynamics simulation and lubrication analysis were applied in the simulation of crankshaft system of internal combustion engine. The coupling model of multi-body dynamics and lubrication of the crankshaft system of a certain diesel engine in service were established. Based on Archard model of wear theory, several groups of cycle indexes were set up for the wear calculation, and a portion of the maximum wear depths and shell profiles of main bearings were selected to be compared and evaluated. The variation law of the calculation results of maximum wear depth with the increase of cycle index was summarized. The results show that index 3 is supposed to be selected in the wear simulation condition in consideration of the cost and reliability of calculation. This study provides guidance and suggestions for the optimization of wear prognosis.

关 键 词：多体动力学 耦合仿真 磨损计算 循环次数 磨损轮廓 

分 类 号：TH117.1[机械工程—机械设计及理论] TH133.3[机械工程—机械制造及自动化]