An analytical solution to the adhesive cylindrical indentation of a compressible elastic thin layer

An analytical solution to the adhesive cylindrical indentation of a compressible elastic thin layer
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可压缩弹性薄层粘性圆柱压痕的解析解

DOI:
10.1080/00218464.2020.1755271
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发表时间:
2020-04
期刊:
The Journal of Adhesion
影响因子:
--
通讯作者:
Ru C. Q.
Ru C. Q.
中科院分区:
其他
文献类型:
--
作者:
Wu J.;Ru C. Q.

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本文提出了一种基于Kerr-type模型的简单分析方法,将著名的Johnson-Kendall-Roberts(JKR)模型推广到平面应变下刚性圆柱和可压缩弹性薄层之间的粘附接触。Kerr型模型提供了接触压力和层的上表面的法向挠度之间的线性微分关系,层的下表面在刚性基底上粘结或滑动。借助Betti功的互等定理,得到了压痕力、压痕深度和接触宽度之间关系的几个易于使用的显式公式,并确定了接触区内的压力分布和拉脱力。预测结果与已有的数值计算结果吻合较好,表明本文的分析模型能够反映刚性基底上可压缩弹性薄层圆柱形压痕的粘附效应。
ABSTRACT A simple analytical method based on the Kerr-type model is proposed to extend the well-known Johnson-Kendall-Roberts (JKR) model to the adhesive contact between a rigid cylinder and a compressible elastic thin layer under plane strain. The Kerr-type model provides a linear differential relation between the contact pressure and the normal deflection of the upper surface of the layer, whose lower surface is either bonded or sliding on a rigid substrate. With the aid of Betti’s reciprocal theorem, several easy-to-use explicit formulas are obtained for the relations between the indentation force, the indentation depth and the contact width, and the pressure distribution inside the contact zone and the pull-off force are determined. Reasonable agreement of the predicted results with existing numerical results shows that the present analytical model can capture the adhesive effects on the cylindrical indentation of a compressible elastic thin layer on a rigid substrate.
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