Adhesive behavior of two-dimensional power-law graded materials
- Chen, Shaohua
- Yan, Cong
- Soh, Aikah
DOIAbstract
AbstractIn this paper, we investigate the adhesive contact between a rigid cylinder of radius R and a graded elastic half-space with a Young’s modulus varying with depth according to a power-law, E=E0(y/c0)k(0<k<1), while the Poisson’s ratio ν remains constant. The results show that, for a given value of ratio R/c0, a critical value of k exists at which the pull-off force attains a maximum; for a fixed value of k, the larger the ratio R/c0, the larger the pull-off force is. For Gibson materials (i.e., k=1andν=0.5), closed-form analytical solutions can be obtained for the critical contact half-width at pull-off and pull-off force. We further discuss the perfect stick case with both externally normal and tangential loads
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