A new method for eyring shear-thinning models in elliptical contacts thermal elastohydrodynamic lubrication
A new method for eyring shear-thinning models in elliptical contacts thermal elastohydrodynamic lubrication
复制标题
椭圆接触热弹流润滑中艾林剪切稀化模型的新方法
DOI：
10.1115/1.4039552
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发表时间：
2018
影响因子：
2.5
通讯作者：
Guo F
中科院分区：
文献类型：
--
作者：
Liu X.L.;Ma M.M.;Yang P.R.;Guo F
提出了一种求解Eyring剪切稀化流体在热弹流润滑中的剪切应力和有效粘度的新方法，并将其应用于两种模型。模型1为单向速度热弹流模型，模型2为速度随坐标变化的自旋热弹流模型。对新方法和现有方法进行了比较。结果表明，对于Eyring剪切稀化流体，只需用模型2的剪切应变率代替模型1的剪切应变率，即可得到模型2的剪切应力和有效粘度。对于模型1，用两种方法获得的结果是相同的。新方法可以被验证并应用于模型2。结果表明，该方法对剪切变稀流体具有更高的计算效率。因此，新方法是更有效的，可用于纺纱Eyring剪切稀化热弹流润滑。
A new method for solving the shear stress and the effective viscosity of Eyring shear-thinning fluid in thermal elastohydrodynamic lubrication (EHL) was proposed and applied to two models. Model 1 is the thermal EHL model with one-direction velocity, and model 2 is the spinning thermal EHL model in which the velocity varies with coordinates. Comparisons between the new and the existing method were carried out. Results show that only replacing the shear strain rate of model 1 with that of model 2, the shear stress and the effective viscosity of model 2 for Eyring shear-thinning fluid can be obtained. For model 1, results obtained with the two methods are the same. The new method can be qualified and applied into model 2. It is proved that the new method has higher efficiency for shear-thinning fluid than the existing method. Therefore, the new method is more efficient and can be used for spinning Eyring shear-thinning thermal EHL.