EHD中薄膜厚度和牵引力的统一剪切变薄处理
A unified shear-thinning treatment of both film thickness and traction in EHD
摘要：
已经提供了一个结论性的演示，剪切变薄的性质，影响膜厚度和牵引力的EHL接触，遵循普通的幂律规则，已被描述的许多经验模型Carreau只是其中的一个例子。这是通过在粘度计中精确测量PAO的剪切响应来实现的，PAO具有非常低的剪切稀化临界应力，并且在强调剪切稀化效应的条件下精确测量接触膜厚度和牵引力。使用简单的计算，从粘度计获得的流变学性质完全可以预测接触中心膜厚度和牵引力。这些数据对于致力于精确模拟赫兹区行为的研究人员来说应该是非常宝贵的，因为剪切稀化流变学被广泛表征，并且可以使用精确的接触数据进行测试。此外，一个新的模型已被引入，可能是有用的混合物的流变特性。
英文摘要：
A conclusive demonstration has been provided that the nature of the shear-thinning, that affects both film thickness and traction in EHL contacts, follows the ordinary power-law rule that has been described by many empirical models of which Carreau is but one example. This was accomplished by accurate measurements in viscometers of the shear response of a PAO that possesses a very low critical stress for shear-thinning and accurate measurements in-contact of film thickness and traction under conditions which accentuate the shear-thinning effect. The in-contact central film thickness and traction were entirely predictable from the rheological properties obtained from viscometers using simple calculations. These data should be invaluable to researchers endeavoring to accurately simulate Hertz zone behavior since the shear-thinning rheology is extensively characterized and accurate in-contact data are available to test. In addition, a new model has been introduced that may be useful for the rheological characterization of mixtures.
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