轴承
軸承
축승
BEARING
2015年
6期
7-11
,共5页
朱成九%朱爱华%肖毅华%徐勇
硃成九%硃愛華%肖毅華%徐勇
주성구%주애화%초의화%서용
铁路货车轴承%点缺陷%LS-DYNA%动力学分析
鐵路貨車軸承%點缺陷%LS-DYNA%動力學分析
철로화차축승%점결함%LS-DYNA%동역학분석
railway freight bearing%point defect%LS-DYNA%dynamics analysis
对铁路货车缺陷轴承边界条件进行合理的假设，建立铁路货车缺陷轴承的三维接触模型。以点缺陷为例，采用LS－DYNA对存在缺陷的铁路货车轴承的接触应力进行计算，编制参数化的计算程序，方便、直观地得出了轴承内外圈以及滚动体不同部位的应力，计算结果与Hertz理论解一致，表明模型的建立以及约束条件的设置准确、合理。利用该模型对铁路货车缺陷轴承进行动力学分析，计算结果为滚动轴承的设计和优化提供了依据，计算方法也便于工程应用。
對鐵路貨車缺陷軸承邊界條件進行閤理的假設，建立鐵路貨車缺陷軸承的三維接觸模型。以點缺陷為例，採用LS－DYNA對存在缺陷的鐵路貨車軸承的接觸應力進行計算，編製參數化的計算程序，方便、直觀地得齣瞭軸承內外圈以及滾動體不同部位的應力，計算結果與Hertz理論解一緻，錶明模型的建立以及約束條件的設置準確、閤理。利用該模型對鐵路貨車缺陷軸承進行動力學分析，計算結果為滾動軸承的設計和優化提供瞭依據，計算方法也便于工程應用。
대철로화차결함축승변계조건진행합리적가설，건립철로화차결함축승적삼유접촉모형。이점결함위례，채용LS－DYNA대존재결함적철로화차축승적접촉응력진행계산，편제삼수화적계산정서，방편、직관지득출료축승내외권이급곤동체불동부위적응력，계산결과여Hertz이론해일치，표명모형적건립이급약속조건적설치준학、합리。이용해모형대철로화차결함축승진행동역학분석，계산결과위곤동축승적설계화우화제공료의거，계산방법야편우공정응용。
The three-dimensional contact model of bearings with defects for railway freight is established according to reasonable assumptions on boundary conditions.Taking the point defects as example,the contact stress of the bearings is calculated by LS-DYNA,and the parametric calculation program is drawn.The stress of inner and outer rings of bearings and different locations in rolling elements are obtained conveniently and intuitively.The calculation result is consistent with Hertz theoretical solution,and the establishment of model and setting of constraint condition are accurate and reasonable.The bearings is dynamically analyzed by using model,the calculation result provides a basis for design and optimization of rolling bearings,the calculation method is also convenient for engineering applications.
