Sliding Contact Analysis of Layered Elastic/Plastic Solids With Rough Surfaces
Sliding Contact Analysis of Layered Elastic/Plastic Solids With Rough Surfaces
复制标题
具有粗糙表面的层状弹性/塑性固体的滑动接触分析
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
B. Bhushan
中科院分区：
文献类型：
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作者：
W. Peng;B. Bhushan
本文建立了一个三维数值模型，研究了具有粗糙表面的层状弹塑性固体的准静态滑动接触行为。该模型既适用于单微凸体接触，也适用于多微凸体接触。基于变分原理得到了表面变形。用快速傅里叶变换（FFT）方法计算了镀层和基体的表面应力和次表面应力，并据此计算了von Mises应力和主拉应力。预测了接触统计特性，如接触面积分数、最大压力/E2和相对弯月面力.结果被用来调查的摩擦，静摩擦，磨损问题，如产生碎片的接触统计的效果。脆性破坏和分层介质的分层。确定了最佳层参数。它允许根据接触统计来指定层特性，以减少材料的摩擦、静摩擦和磨损。一个标准化的过程中，提出了适用于各种组合的表面粗糙度，材料性能，和正常的负载的结果。
A three-dimensional numerical model is presented to investigate the quasi-static sliding contact behavior of layered elastic/plastic solids with rough surfaces. The model is applicable for both single-asperity contact and multiple-asperity contacts. The surface deformation is obtained based on a variational principle. The surface and subsurface stresses in the layer and the substrate are determined with a Fast Fourier transformation (FFT) based scheme and von Mises and principal tensile stresses are computed accord-ingly. Contact statistics, such as fractional contact area, maximum pressure/E 2 and relative meniscus force are predicted. The results are used to investigate the effect of the contact statistics on friction, stiction, and wear problems such as debris generation. brittle failure, and delamination of layered media. Optimum layer parameters are identified. It allows the specification of layer properties, according to the contact statistics, to reduce friction, stiction, and wear of materials. A normalization procedure is presented to apply the results on various combinations of surface roughness, material properties, and normal load.