Statistical Analysis of Perfect Contact and Wear Durability Conditions of a Single-Degree-of-Freedom Contact Slider
Statistical Analysis of Perfect Contact and Wear Durability Conditions of a Single-Degree-of-Freedom Contact Slider
复制标题
单自由度接触滑块完美接触及磨损耐久性条件统计分析
DOI：
10.1115/1.555369
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发表时间：
2000
影响因子：
2.5
通讯作者：
K. Iida
中科院分区：
文献类型：
--
作者：
K. Ono;K. Iida
本文对随机波形磁盘表面上的单自由度接触滑块的设计条件进行了统计分析。数值结果表明，当滑块与磁盘接触时，即使表面波纹度直方图不接近高斯分布，间距变化直方图也接近高斯分布。从3σ s < δ（σ s和δ分别为间距变化的标准差和静态穿透深度）出发，推导出了理想接触滑动所需的滑块设计条件和表面波纹度，并进行了数值和实验验证。本文还导出了均匀接触垫压力下耐磨性的必要条件。示出了同时满足完美接触滑动和耐磨性的滑块-盘接口设计的示例。为了准确地计算出σ s，必须对滑块的频率响应在f1/2到2f的范围内进行积分，其中f1是接触共振频率。为了同时满足理想的接触滑动和耐磨性条件，圆盘表面必须非常光滑。
In this paper, the design condition of a single-degree-of-freedom (IDOF) contact slider over a random wavy surface of a disk is analyzed statistically. It is numerically confirmed that when the slider is in contact with a disk, spacing variation histograms are close to Gaussian even if surface waviness histogram is not close to Gaussian. The design condition of the slider and the surface waviness necessary for perfect contact sliding is derived from 3σ s < δ, where σ s and δ are the standard deviation of spacing variation and the static penetrating depth, respectively, and it is verified both numerically and experimentally. The necessary condition for wear durability under uniform contact pad pressure is also derived. An example of the slider-to-disk interface design which satisfies both perfect contact sliding and wear durability is shown. In order to evaluate σ s adequately, frequency response of slider must be integrated over the range from f,/2 to 2f, where f, is the contact resonance frequency, It is found that a disk surface should be extremely smooth to satisfy both the perfect contact sliding and wear durability conditions.