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首页> 外文期刊>Bulletin of the Polish Academy of Sciences. Technical Sciences >The effect of sampling interval on the predictions of an asperity contact model of two-process surfaces
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The effect of sampling interval on the predictions of an asperity contact model of two-process surfaces

机译：采样间隔对双处理表面的粗糙接触模型预测的影响

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摘要

Contact of random machined two-process steel textures with a smooth, flat steel surface is discussed in this paper. Two-process surfaces were machined by vapour blasting followed by lapping. An elastic-plastic contact model was applied, assuming distributed radius of asperities. Calculation procedures allowed the mean surface separation, contact pressure, and area fraction to be computed as functions of sampling intervals. Parameters characterizing the summits important in contact mechanics were calculated for different sampling intervals. Plasticity index of two-process textures was calculated using the modified procedure. It was found that the influence of sampling interval on normal contact depended on the rough surface ability to plastic deformation. The use of a traditional method of calculation overestimated the plasticity index. Peaks from plateau surface region governed contact characteristics of two-process surfaces.
机译：本文讨论了随机加工的两种工艺钢织构与光滑平整钢表面的接触。两个工艺表面通过蒸汽喷砂加工，然后进行研磨。采用弹塑性接触模型，假设微凸体的分布半径。计算程序允许将平均表面分离、接触压力和面积分数计算为采样间隔的函数。计算了不同采样间隔下表征接触力学中重要顶点的参数。用改进的程序计算了两种工艺织构的塑性指数。研究发现，采样间隔对法向接触的影响取决于粗糙表面的塑性变形能力。使用传统的计算方法高估了塑性指数。平台表面区域的峰值决定了两个过程表面的接触特性。

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