基于分区域虚拟材料方法的轴承结合部精确建模方法研究  

Research on accurate modeling method of bearing joint based on sub region virtual material method

作　　者：陈勇将[1] 汤文成[2] 郭魂[1] 华洪良 CHEN Yongjiang;TANG Wencheng;GUO Hun;HUA Hongliang(School of Aerospace and Mechanical Engineering,Changzhou Institute of Technology,Changzhou 213032,CHN;School of Mechanical Engineering,Southeast University,Nanjing 211189,CHN)

机构地区：[1]常州工学院航空与机械工程学院,江苏常州213032 [2]东南大学机械工程学院,江苏南京211189

出　　处：《制造技术与机床》2022年第6期100-107,共8页Manufacturing Technology & Machine Tool

基　　金：中国博士后科学基金面上项目资助(2019M651965)。

摘　　要：针对滚动接触可动结合部虚拟材料模型未考虑滚动体与滚道接触应力分布不均的问题,提出了一种分区域虚拟材料结合部建模方法。以滚珠轴承为例,首先建立了可用于分析不同滚珠相位角处接触应力分布情况的滚珠轴承理论模型。然后,基于此模型获得的滚珠与滚道接触应力分布特性,采用分区域虚拟材料结合部模型等效表征非均匀接触特性,最终建立了考虑非均匀接触的滚珠轴承结合部虚拟材料模型。搭建了含不同尺寸滚珠轴承的主轴箱实验平台,通过试验验证此建模方法的有效性。结果表明:分区域虚拟材料结合部建模方法是一种表征滚珠与滚道接触应力分布不均的有效方法。Aiming at the problem that the uneven distribution of contact stress between the rolling element and the raceway is not considered in the virtual material model of rolling contact movable joint,a method of virtual material joint modeling in different regions is proposed.Taking the ball bearing as an example,the theoretical model of ball bearing which can be used to analyze the contact stress distribution at different ball phase angles is established,then based on the contact stress distribution characteristics of the ball and raceway obtained by this model,the non-uniform contact characteristics are equivalently represented by the zonal virtual material joint model.Finally,the virtual material model of the ball bearing joint considering the non-uniform contact is established.The experimental platform of headstock with different sizes of ball bearings is built,and the effectiveness of this modeling method is verified by experiments.The results show that the virtual material joint modeling method is an effective method to characterize the uneven distribution of contact stress between ball and raceway.

关 键 词：非均匀接触 结合部 虚拟材料 多目标优化 固有频率 

分 类 号：TH113.1[机械工程—机械设计及理论]