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Calculation of Sliding Power Loss in Spur Gear Contacts

机译：正齿轮触点滑动功率损耗的计算

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摘要

An engineering-level calculation model for sliding power loss in spur gear contacts is presented. Teeth contact through the line of action is modelled as a constantly changing roller contact whose radius, speed, and load can be calculated from the gear geometry under the given operating conditions. The gear mesh cycle is approximated by a large number of elastohydrodynamic contacts. A constant film thickness and a Hertzian pressure distribution are assumed in each contact. The model includes non-Newtonian lubricant behaviour together with temperature and mixed lubrication effects in contact. The numerical solver is reasonably fast in evaluating effectively the sliding power loss dependence on the essential gear and lubricant parameters. The features and behaviour trends of the calculated sliding power losses have a close similarity with published results obtained from measurements and experiment-based power loss models with mineral oil. The limiting shear stress of the lubricant is observed to have an essential role in the power loss behaviour especially at high loads.
机译：提出了正齿轮触点滑动功率损失的工程水平计算模型。通过作用线的齿接触被建模为一个不断变化的滚子接触，其半径，速度和负载可以在给定的工作条件下根据齿轮的几何形状来计算。齿轮啮合周期可以通过大量的弹性流体动力接触来近似。在每个触点中假定薄膜厚度恒定且赫兹压力分布。该模型包括非牛顿润滑剂行为，以及接触时的温度和混合润滑效果。数值求解器可以快速有效地评估与基本齿轮和润滑剂参数有关的滑动功率损耗。计算得出的滑动功率损耗的特征和行为趋势与从测量和基于实验的矿物油功率损耗模型获得的公开结果非常相似。观察到润滑剂的极限剪切应力在功率损耗行为中起着至关重要的作用，特别是在高负载下。

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