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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) >THEORETICAL INVESTIGATION IN THERMOELASTOHYDRODYNAMIC LUBRICATION WITH NON-NEWTONIAN LUBRICANTS UNDER HEAVY LOAD CHANGE
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THEORETICAL INVESTIGATION IN THERMOELASTOHYDRODYNAMIC LUBRICATION WITH NON-NEWTONIAN LUBRICANTS UNDER HEAVY LOAD CHANGE

机译：重载变化下非牛顿润滑剂对热弹性体动力润滑的理论研究

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摘要

The time-dependent thermal compressible elastohydrodyna-mic (EHD) lubrication of sliding line contact has been developed to investigate the effect of a sudden load change. The time-dependent modified Reynolds equation with non-Newtonian fluids has been formulated using power law's model. In this study, the non-Newtonian dilatant fluids for liquid-solid lubricants have been purposed experimentally using the common solid particles namely, Molybdenum disulfide (MoS_2) and Polytetrafluoroethylene (PTFE). The simultaneous systems of modified Reynolds and elasticity and energy equations with initial conditions were solved numerically using multigrid multilevel technique. The performance characteristics of the thermoelastohydrodynamic under line contact were presented with varying time for the pressure distribution, temperature distribution and oil film thickness. The transient response of the line contact between two surfaces was simulated under a heavy step load function. The coefficients of friction were also presented in this work at steady state condition with varying particle concentration. This simulation showed a significant effect of liquid-solid on thermoelastohydrodynamic (TEHD) lubrication under heavy load conditions.
机译：已经开发了滑线接触的时变热可压缩弹性流体动力学（EHD）润滑技术，以研究突然载荷变化的影响。使用幂定律模型建立了具有非牛顿流体的时变修正雷诺方程。在这项研究中，已使用通用的固体颗粒即二硫化钼（MoS_2）和聚四氟乙烯（PTFE）通过实验目的设计了用于液固润滑剂的非牛顿膨胀液。使用多网格多级技术数值求解了带有初始条件的修正的雷诺数和弹性与能量方程的同时系统。给出了线接触下的热弹性流体力学的性能特征，其中压力，温度分布和油膜厚度随时间的变化而变化。在重步载荷函数下，模拟了两个表面之间的线接触的瞬态响应。在稳态条件下，随着颗粒浓度的变化，也给出了摩擦系数。此模拟显示了在重载条件下液固对热弹流体动力学（TEHD）润滑的显着影响。

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