机械工程与自动化
機械工程與自動化
궤계공정여자동화
MECHANICAL ENGINEERING & AUTOMATION
2013年
4期
19-20,23
,共3页
滚动轴承%动态接触%润滑状态%有限元单元法
滾動軸承%動態接觸%潤滑狀態%有限元單元法
곤동축승%동태접촉%윤활상태%유한원단원법
roller bearing%dynamic contacting%lubrication state%finite element method
滚动轴承运转过程中的动态接触特性与轴承的使用寿命密切相关，在ANSYS/LS-DYNA研究平台上开展不同润滑状态下滚动轴承动态接触特性的数值模拟研究，考察润滑因素对数值模拟结果的影响情况。结果表明，由流体润滑状态下得到的滚子组单元应力仿真结果，明显小于边界润滑和混合润滑状态下得到的结果，且轴心在载荷方向上位移变化起伏明显减小。与边界润滑和混合润滑状态相比较，流体润滑明显改善了滚动轴承动态接触特性。研究结论可以为滚动轴承的动态接触特性预测和合理润滑方案的设计提供参考。
滾動軸承運轉過程中的動態接觸特性與軸承的使用壽命密切相關，在ANSYS/LS-DYNA研究平檯上開展不同潤滑狀態下滾動軸承動態接觸特性的數值模擬研究，攷察潤滑因素對數值模擬結果的影響情況。結果錶明，由流體潤滑狀態下得到的滾子組單元應力倣真結果，明顯小于邊界潤滑和混閤潤滑狀態下得到的結果，且軸心在載荷方嚮上位移變化起伏明顯減小。與邊界潤滑和混閤潤滑狀態相比較，流體潤滑明顯改善瞭滾動軸承動態接觸特性。研究結論可以為滾動軸承的動態接觸特性預測和閤理潤滑方案的設計提供參攷。
곤동축승운전과정중적동태접촉특성여축승적사용수명밀절상관，재ANSYS/LS-DYNA연구평태상개전불동윤활상태하곤동축승동태접촉특성적수치모의연구，고찰윤활인소대수치모의결과적영향정황。결과표명，유류체윤활상태하득도적곤자조단원응력방진결과，명현소우변계윤활화혼합윤활상태하득도적결과，차축심재재하방향상위이변화기복명현감소。여변계윤활화혼합윤활상태상비교，류체윤활명현개선료곤동축승동태접촉특성。연구결론가이위곤동축승적동태접촉특성예측화합리윤활방안적설계제공삼고。
There is a close relationship between rolling contacting behavior and the service life of roller bearing .In order to investigate the effect of lubrication condition on dynamic contacting characteristics of roller bearing ,numerical simulations were carried out by introducing dynamic finite element models with different friction coefficients based on ANSYS/ LS-DYNA . It finds that the maximum stress of rollers elements calculated from fluid lubrication condition were less than that from the model with boundary lubrication or mixed lubrication .The displacement of the axis along loading from fluid lubrication condition had the least variation amplitude .Conclusions were expected to give some useful references for the study of dynamic contacting nature predicting and reasonable lubrication condition choosing of rolling bearings .
