润滑与密封
潤滑與密封
윤활여밀봉
LUBRICATION ENGINEERING
2014年
2期
48-55
,共8页
有限长线接触%圆柱滚子%热弹流润滑%Ree-Eyring%Power-Law
有限長線接觸%圓柱滾子%熱彈流潤滑%Ree-Eyring%Power-Law
유한장선접촉%원주곤자%열탄류윤활%Ree-Eyring%Power-Law
finite line contact%cylindrical roller%thermal EHL%Ree-Eyring%Power-Law
建立有限长圆柱滚子的非牛顿流体热弹流润滑模型，选取Ree-Eyring流体和Power-Law流体进行有限长线接触弹流润滑分析。研究表明：随着接触线长度增大，端部效应减弱；Ree-Eyring流体特征剪切力对润滑温升和剪切力影响较大，而对润滑压力与膜厚影响甚微；Power-Law流体随指数增大，润滑膜厚明显降低；随载荷、转速升高，热解与等温润滑结果差异增大，热效应对摩擦因数的影响尤其显著。
建立有限長圓柱滾子的非牛頓流體熱彈流潤滑模型，選取Ree-Eyring流體和Power-Law流體進行有限長線接觸彈流潤滑分析。研究錶明：隨著接觸線長度增大，耑部效應減弱；Ree-Eyring流體特徵剪切力對潤滑溫升和剪切力影響較大，而對潤滑壓力與膜厚影響甚微；Power-Law流體隨指數增大，潤滑膜厚明顯降低；隨載荷、轉速升高，熱解與等溫潤滑結果差異增大，熱效應對摩抆因數的影響尤其顯著。
건립유한장원주곤자적비우돈류체열탄류윤활모형，선취Ree-Eyring류체화Power-Law류체진행유한장선접촉탄류윤활분석。연구표명：수착접촉선장도증대，단부효응감약；Ree-Eyring류체특정전절력대윤활온승화전절력영향교대，이대윤활압력여막후영향심미；Power-Law류체수지수증대，윤활막후명현강저；수재하、전속승고，열해여등온윤활결과차이증대，열효응대마찰인수적영향우기현저。
A thermal elastohydrodynamic lubrication (TEHL)finite line contact model was proposed for a cylindrical roller with Ree-Eyring fluid and Power-Law fluid.The results show that with the increase of contact line length,end effect is decreased.The Eyring shear stress for Ree-Eyring fluid has a great influence on the temperature rise and shear stress, while has a little influence on the pressure and film thickness.For Power-Law fluid,the film thickness is decreased dramat-ically with the increase of Power-Law exponent.Compared with the isothermal results,the thermal results are quite different with the increase of load and speed,and there is a more significant influence on friction coefficient for thermal effects.
