Elastic–plastic adhesive contact of rough surfaces based on plastic asperity concept |
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Authors: | SM Ali P Sahoo |
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Affiliation: | (1) Department of Mechanical Engineering, Jadavpur University, Kolkata, 700 032, India |
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Abstract: | The paper describes an analysis of adhesive contact between rough surfaces with small-scale surface asperities using an elastic–plastic model of contact deformation based on fictitious plastic asperity concept developed by Abdo and Farhang Int. J. Non-Linear Mech. 40 (2005) 495]. The model considers simultaneous occurrence of elastic and plastic behaviours for an asperity. The well-established elastic adhesion index and plasticity index are used to consider the different contact conditions that arise as a result of varying load and material parameters. The load-separation behaviour for different combinations of these parameters is obtained. Comparison with previous elastic–plastic model that was based on elastic-then-plastic assumption is made showing significant differences. |
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Keywords: | adhesion surface roughness plastic asperity |
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