Mechanics of axisymmetric adhesive contact of rough surfaces involving power-law graded materials

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:50

Article

Jin, Fan¹  Guo, Xu¹ 

[1] Dalian Univ Technol, Dept Engn Mech, State Key Lab Struct Anal Ind Equipment, Dalian 116023, Peoples R China

关键词: Contact mechanics;    JKR model;    Power-law graded materials;    Surface roughness;    Adhesion hysteresis;   

DOI  :  10.1016/j.ijsolstr.2013.06.007

来源: Elsevier

【 摘 要 】

In the present paper, the mechanics of axisymmetric adhesive contact of rough surfaces involving power-law graded materials is investigated analytically. A series of general analytical solutions have been obtained with use of the Cumulative superposition and equivalent energy release rate approaches. These solutions provide closed-form expressions of equilibrium relations among applied load, indentation depth and contact radius. Based on these solutions, an effective macroscopic. description of the contact evolution is obtained for a general punch profile with surface roughness. Our analysis results reveal that the simultaneous presence of surface roughness and graded material properties can influence the pull-off force and energy dissipation due to adhesion hysteresis significantly. Moreover, it is found that both the adhesion strength and toughness can be optimized by adjusting the surface topography and material parameters of power-law graded solids appropriately. The analytical results obtained in this paper include the corresponding solutions for homogeneous isotropic materials as special cases and therefore can also serve as the benchmarks for checking the validity of numerical solution results. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

Free