Abstract In this study, a rough surface thermal elastohydrodynamic lubrication (TEHL) model tailored for the simulation of high-speed and high-temperature contacts of relatively smooth surfaces is introduced. The model uses a modified Carreau-Yasuda constitutive function to capture the non-Newtonian effects and a limiting shear formulation to consider any lubricant–solid slippage. It is employed to simulate a family of traction tests from Handschuh et al. for validation. According to the methodology of Handschuh et al., a set of two-disc scuffing experiments was performed with chemically polished surfaces under various rolling and sliding velocity conditions. Several load stages of these scuffing tests were simulated using the TEHL model with the measured surface roughness and bulk temperature as inputs. The predictions indicate that a scuffing limit based solely on the maximum surface or lubricant temperature does not exist for the contacts considered; however, a scuffing boundary based on both fluid temperature and contact pressure is evident.

中文翻译：

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为相对平滑的高速接触制定划伤极限的实验理论方法

摘要 在这项研究中，介绍了一种粗糙表面热弹流体动力润滑 (TEHL) 模型，该模型适用于模拟相对光滑表面的高速和高温接触。该模型使用改进的 Carreau-Yasuda 本构函数来捕捉非牛顿效应，并使用限制剪切公式来考虑任何润滑剂-固体滑移。它被用来模拟来自 Handschuh 等人的一系列牵引力测试。用于验证。根据 Handschuh 等人的方法，在各种滚动和滑动速度条件下对化学抛光表面进行了一组两盘划伤实验。使用 TEHL 模型以测量的表面粗糙度和整体温度作为输入来模拟这些划伤测试的几个载荷阶段。预测表明，对于所考虑的接触，不存在仅基于最大表面或润滑剂温度的划伤限制；然而，基于流体温度和接触压力的划伤边界是明显的。