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Method for determining low friction non-Gaussian surfaces and optimal low friction surface parameters
Method for determining low friction non-Gaussian surfaces and optimal low friction surface parameters
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机译：确定低摩擦非高斯表面和最佳低摩擦表面参数的方法
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摘要
The present invention provides a low friction surface and method of design that minimizes the resulting wear of portions within static and dynamic friction moving contact surfaces. In one embodiment, the present invention provides a magnetic media storage device having a non-Gaussian surface with a roughness distribution that minimizes static and kinetic friction by having a positive asymmetry and a high kurtosis value. According to one aspect of the invention, the magnetic media storage device has a low friction surface having a positive asymmetry value and a kurtosis value of three or more. According to another feature of the invention, the magnetic media storage device has a low friction surface with an asymmetry value in the approximate range of 0.0 to 0.2 and a kurtosis value in the approximate range of 3 to 10 or more. These surfaces also cause low wear.;The present invention is based on the use of models of probability density function or actual contact area at a small interface in a computer generated surface, number of contacts, contact pressure and meniscus force with different asymmetry and kurtosis values, There is further provided a method of determining an optimal non-Gaussian surface for a magnetic media storage device that minimizes wear. From the probabilistic density function or the curve generated by the computer generated surface, the optimal values of the asymmetry and the kurtosis are determined for minimum stop and kinetic friction. The magnetic media storage surface having a positive asymmetry value and a kinetics value of at least 3 by the method of the present invention is characterized by the actual contact area, the meniscus force, and the film thickness sensitivity to static friction between the magnetic media storage device and the slider head To /RTI reduce friction and wear of the storage device.;Although the present invention has been described with reference to a computer hard disk and a disk / head interface as an example of a surface type resulting from the low friction and wear contribution of the present invention, the principles of the present invention may be applied to various types of surfaces such as engine pistons, gears, And is applicable to any material used in any mechanical device that moves (i.e., slides or rolls) in contact with other materials, such as,
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