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首页> 外文会议>American Society of Mechanical Engineers(ASME)/Society of Tribologists and Lubrication Engineers(STLE) International Joint Tribology Conference 2004(IJTC 2004) vol.1 pt.A; 20041024-27; Long Beach,CA(US) >A MORE COMPLETE DESCRIPTION OF THE SHEAR RHEOLOGY OF HIGH-TEMPERATURE, HIGH-SHEAR JOURNAL BEARING LUBRICATION
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A MORE COMPLETE DESCRIPTION OF THE SHEAR RHEOLOGY OF HIGH-TEMPERATURE, HIGH-SHEAR JOURNAL BEARING LUBRICATION

机译：高温，高剪切滑动轴承润滑的剪切流变学的更完整描述

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摘要

High-pressure viscometers, that have in the past been used mainly to obtain rheological properties for elastohydrodynamics, can be used to obtain flow curves for motor oils that extend much deeper into the shear-thinning regime than conventional HTHS viscometers and the constitutive information obtained should be immensely helpful in journal bearing calculations. A simple infinite journal bearing calculation shows that the effect of pressure on viscosity is at least as important as the effect of shear rate and that shear rate alone is a poor measure of the extent of shear-thinning in a bearing under HTHS conditions. Then variability in piezoviscous response should be at least as important as variability in shear-thinning. Sufficiently accurate theory exists to possibly design lubricants for both high load capacity and low friction by balancing pressure and shear rate effects.
机译：过去主要用于获得弹性流体力学的流变特性的高压粘度计，可用于获得比常规HTHS粘度计更深入剪切稀化范围的机油流动曲线，所获得的本构信息应在轴颈轴承计算中非常有帮助。简单的无限轴颈轴承计算表明，压力对粘度的影响至少与剪切速率的影响一样重要，而且仅剪切速率不足以衡量HTHS条件下轴承的剪切稀化程度。然后，压电粘性响应的可变性至少应与剪切稀化的可变性一样重要。存在足够精确的理论，可以通过平衡压力和剪切速率的影响来设计用于高负载能力和低摩擦的润滑剂。

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