Kinetic Meniscus Model for Prediction of Rest Stiction

Author:

Bhushan B.1,Kotwal C. A.1,Chilamakuri S. K.1

Affiliation:

1. Computer Microtribology and Contamination Laboratory, Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210-1107

Abstract

The time dependence of static friction is an important aspect of tribological studies whereby the static friction increases with an increase in the time of stationary contact (rest static friction or rest stiction). This effect is commonly observed in computer disk drives especially at high humidities, in which the static friction increases rapidly with an increase in rest time between some head slider and the disk surfaces. For the first time, a comprehensive kinetic meniscus model is proposed to explain this phenomenon, both for a single asperity and multiple asperity contacts at a liquid mediated interface. It is found that the static friction increases up to a certain equilibrium time with a power law relationship after which it remains constant. The equilibrium time is dependent on the liquid film thickness, the liquid viscosity and the contact geometry. The model developed is applied to a rough textured disk, a polished disk and a super smooth disk. To study the effect of the scan size on the meniscus force, the static friction is calculated by using roughness parameters obtained from measurements at different scan sizes.

Publisher

ASME International

Subject

Surfaces, Coatings and Films,Surfaces and Interfaces,Mechanical Engineering,Mechanics of Materials

Cited by 16 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Friction and Contact of Solid Interfaces;Dynamics and Control of Robotic Manipulators with Contact and Friction;2018-11-19

2. Friction;Friction Dynamics;2016

3. An Insight to High Humidity-Caused Friction Modulation of Brake by Numerical Modeling of Dynamic Meniscus under Shearing;Lubricants;2015-05-19

4. Adsorbed Water Film and Heat Conduction from Disk to Slider in Heat-Assisted Magnetic Recording;Tribology Letters;2014-08-10

5. Fundamentals of contact mechanics and friction;Handbook of Friction-Vibration Interactions;2014

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