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首页> 外文会议>World Tribology Congress III vol.1; 20050912-16; Washington,DC(US) >Contact Analysis of Multilayered Elastic/Plastic Solids with Rough Surfaces for Decreasing Friction and Wear
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Contact Analysis of Multilayered Elastic/Plastic Solids with Rough Surfaces for Decreasing Friction and Wear

机译：粗糙表面多层弹性/塑料固体的接触分析，以减少摩擦和磨损

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摘要

A numerical three-dimensional contact model is presented to investigate the contact behavior of multilayered elastic-perfectly plastic solids with rough surfaces. The surface displacement and contact pressure distributions are obtained based on the variational principle with fast Fourier transform (FFT)-based scheme. Von Mises yield criterion is used to determine the onset of yield. The effective hardness is modeled and plays role when the local displacement meet the maximum displacement criterion. Simulations are performed to obtain the contact pressures, fractional total contact area, fractional plastic contact area, and surface/subsurface stresses. These contact statistics are analyzed to study the effects of the layer-to-substrate ratios of stiffness and hardness, surface roughness, and layers thickness of rough, two-layered elastic/plastic solids. The results yield insight into the effects of stiffness and hardness of layers and substrates, surface roughness, and applied load on the contact performance. The layer parameters leading to low friction, stiction, and wear are investigated and identified.
机译：提出了一个三维三维接触模型，以研究具有粗糙表面的多层弹性完美塑料固体的接触行为。基于变分原理，采用基于快速傅里叶变换（FFT）的方案，获得了表面位移和接触压力分布。冯·米塞斯（Von Mises）产量标准用于确定产量的开始。对有效硬度进行建模，并在局部位移满足最大位移标准时发挥作用。进行模拟以获得接触压力，分数总接触面积，分数塑料接触面积和表面/亚表面应力。分析这些接触统计数据以研究刚度和硬度，表面粗糙度以及粗糙的两层弹性/塑料固体的层厚度对层与基底的比率的影响。结果可以深入了解层和基材的刚度和硬度，表面粗糙度以及施加的载荷对接触性能的影响。研究和确定了导致低摩擦，静摩擦和磨损的层参数。

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