Slider/disk contact, which will lead to lubricant depletion, is likely to occur due to the nano spacing between slider and disk. To understand the mechanism of lubricant depletion under contact, a molecular dynamics model is developed in this article. The effects of air bearing pressure, the contact force, and the disk velocity on the penetration depth of the slider and the depletion volume of lubricant is studied. The results show that higher contact force and smaller air bearing pressure cause deeper penetration depth, which leads to a larger amount of lubricant depletion. The effect of disk velocity on lubricant depletion can be neglected at a high contact force. In order to effectively reduce lubricant transfer and lubricant depletion, high air bearing pressure should be suggested and slider/disk contact should be avoided.

中文翻译：

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使用分子动力学模拟空气轴承压力和滑块/盘接触对润滑剂消耗的影响

由于滑块和磁盘之间的纳米间距，很可能会发生滑块/磁盘接触，这将导致润滑剂耗尽。为了了解接触下润滑剂消耗的机制，本文开发了一个分子动力学模型。研究了空气轴承压力、接触力和磁盘速度对滑块穿透深度和润滑剂消耗量的影响。结果表明，较高的接触力和较小的空气轴承压力会导致更深的渗透深度，从而导致更多的润滑剂消耗。在高接触力下，磁盘速度对润滑剂消耗的影响可以忽略不计。为了有效减少润滑剂转移和润滑剂消耗，应建议高空气轴承压力，并应避免滑块/磁盘接触。