Analysis of sliding behavior of coated surfaces under shear traction
Keywords:
contact analysis, non-conformal contacts, coating, shear traction, hertz contactAbstract
The tribological behavior of non conformal coated contacting surface i.e. rigid sphere on the coated flat material surface normal force and shear traction is studied through numerical results. The non-conforming contact is a fundamental problem in the contact mechanics, which has a wide range of applications. Contact is the science behind tribology, the interdisciplinary study of friction, wear and lubrication with major applications in particle handling or friction between contacting rough surfaces, brakes, Bearings and so on. In the present investigation, the contact between the coated flat and the rigid sphere under the combination of normal and tangential loading is analyzed using finite element software ABAQUS. The substrate material is chosen for the analysis High speed steel, Titanium alloy and coating material is TiN (E=305GPa) of 5µm thick with a bonding material is Chromium (379GPa) of 1µm thick at the interface between the coating and substrate is modeled by three dimensional finite element method (3DFEM) in order to optimize coating coated surface and bonding layer to coating fracture. The elastic-perfectly plastic contact is assumed on the flat model. The results obtained from the FEA are used in the understanding of the tribological behavior of the contact pair.
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