中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2015年
10期
1284-1288
,共5页
关节轴承%球面间隙%接触应力%温度场%红外测量%有限元
關節軸承%毬麵間隙%接觸應力%溫度場%紅外測量%有限元
관절축승%구면간극%접촉응력%온도장%홍외측량%유한원
spherical plain bearing%spherical gap%contact stress%temperature field%infrared meas-urement%finite element
以推力型关节轴承为研究对象，分析了轴向载荷下的接触应力，并根据试验所得摩擦力矩反推出了动态摩擦因数。结合接触应力及摩擦因数求出了摩擦热流率，并将其作为第二类边界条件进行了轴承非定常温度场有限元分析，最后利用红外热像仪拍摄了摩擦过程中轴承侧表面温度分布，检验仿真结果的可靠性。仿真与试验结果表明：该计算方法解决了球面摩擦副摩擦因数的精确计算和热流率的空间分配问题，建模时忽略球面间隙会直接影响接触应力分布并造成温度场分布出现较大误差，考虑球面间隙可以更精确地计算轴承摩擦温度场。
以推力型關節軸承為研究對象，分析瞭軸嚮載荷下的接觸應力，併根據試驗所得摩抆力矩反推齣瞭動態摩抆因數。結閤接觸應力及摩抆因數求齣瞭摩抆熱流率，併將其作為第二類邊界條件進行瞭軸承非定常溫度場有限元分析，最後利用紅外熱像儀拍攝瞭摩抆過程中軸承側錶麵溫度分佈，檢驗倣真結果的可靠性。倣真與試驗結果錶明：該計算方法解決瞭毬麵摩抆副摩抆因數的精確計算和熱流率的空間分配問題，建模時忽略毬麵間隙會直接影響接觸應力分佈併造成溫度場分佈齣現較大誤差，攷慮毬麵間隙可以更精確地計算軸承摩抆溫度場。
이추력형관절축승위연구대상，분석료축향재하하적접촉응력，병근거시험소득마찰력구반추출료동태마찰인수。결합접촉응력급마찰인수구출료마찰열류솔，병장기작위제이류변계조건진행료축승비정상온도장유한원분석，최후이용홍외열상의박섭료마찰과정중축승측표면온도분포，검험방진결과적가고성。방진여시험결과표명：해계산방법해결료구면마찰부마찰인수적정학계산화열류솔적공간분배문제，건모시홀략구면간극회직접영향접촉응력분포병조성온도장분포출현교대오차，고필구면간극가이경정학지계산축승마찰온도장。
Taking thrust spherical plain bearing as the research object ,the contact stress under axi-al load was analyzed and based on the experimental friction torque the dynamic friction coefficient was solved .Then combined with contact stress and friction coefficient ,heat flow rate was calculated and served as the second boundary condition for the unsteady temperature field finite element analysis of the bearing .Finally ,using infrared camera to shoot the outer surface of two-dimensional temperature distribution of the bearing friction process ,then reliability of simulation results was tested .Simulation and experimental results show that :the calculation method has solved the problems of accurate calcu-lation of spherical friction coefficient and spatial distribution of the heat flow rate .Ignoring the spheri-cal gap when modeling will affect the contact stress distribution directly and cause a larger error in temperature distribution .Considering a spherical gap a more accurate bearing friction temperature field can be obtained .
