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arXiv 0710.0276cond-mat.soft
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接触力学的分子动力学研究:从小接触到全接触的接触面积和界面分离

Molecular dynamics study of contact mechanics: contact area and interfacial separation from small to full contact

C. Yang, B. N. J. Persson

摘要:

用分子动力学方法研究了具有随机粗糙表面的刚性固体与具有平坦表面的弹性块体之间的接触。我们研究了接触面积和界面分离从小接触(低负荷)到完全接触(高负荷)。对于小载荷,接触面积与载荷成线性关系,界面分离与载荷成几何关系。对于高负载,接触面积接近标称接触面积(即,完全接触),并且界面分离接近于零。目前的结果可能是非常重要的软固体,例如,橡胶,或非常光滑的表面,其中在中等高载荷下可以达到完全接触而不会使固体发生塑性形变。

英文摘要:

We report a molecular dynamics study of the contact between a rigid solid with a randomly rough surface and an elastic block with a flat surface. We study the contact area and the interfacial separation from small contact (low load) to full contact (high load). For small load the contact area varies linearly with the load and the interfacial separation depends logarithmically on the load. For high load the contact area approaches to the nominal contact area (i.e., complete contact), and the interfacial separation approaches to zero. The present results may be very important for soft solids, e.g., rubber, or for very smooth surfaces, where complete contact can be reached at moderate high loads without plastic deformation of the solids.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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