Three-Dimensional Local Yield Maps of Hard Coating Under Sliding ContactSource: Journal of Tribology:;2012:;volume( 134 ):;issue: 002::page 21301DOI: 10.1115/1.4005265Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The local yield maps for the identification of the yield initiation positions of hard coating on three-dimensional (3D) elastic half space under sliding contact were developed. In this study, the semi-analytical method (SAM), which is based on the conjugate gradient method (CGM) and the discrete convolution and fast Fourier transform (DC-FFT) technique, was employed to analyze the contact problem. By using this method, the von Mises stress distributions for various combinations of coating thicknesses, friction coefficients, and elastic moduli of the coating and substrate were calculated. Then, the positions of yield initiation were found with the calculated results by comparing the critical maximum contact pressure Pmax,c for von Mises yielding at or in the different positions (surface, coating, interface, and substrate), and the 3D-local yield maps were introduced in relation to the yield strength ratio of the coating to the substrate (Yf /Yb ) and the ratio of the coating thickness to the Hertzian contact radius (t/a0 ). Finally, the effect of critical friction coefficient on the transition of yielding positions was discussed.
keyword(s): Friction , Coating processes , Coatings , Stress , Yield strength , Thickness AND Pressure ,
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contributor author | P. Y. Zhang | |
contributor author | Z. J. Wang | |
contributor author | D. F. Diao | |
date accessioned | 2017-05-09T00:54:42Z | |
date available | 2017-05-09T00:54:42Z | |
date copyright | April, 2012 | |
date issued | 2012 | |
identifier issn | 0742-4787 | |
identifier other | JOTRE9-28789#021301_1.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/150350 | |
description abstract | The local yield maps for the identification of the yield initiation positions of hard coating on three-dimensional (3D) elastic half space under sliding contact were developed. In this study, the semi-analytical method (SAM), which is based on the conjugate gradient method (CGM) and the discrete convolution and fast Fourier transform (DC-FFT) technique, was employed to analyze the contact problem. By using this method, the von Mises stress distributions for various combinations of coating thicknesses, friction coefficients, and elastic moduli of the coating and substrate were calculated. Then, the positions of yield initiation were found with the calculated results by comparing the critical maximum contact pressure Pmax,c for von Mises yielding at or in the different positions (surface, coating, interface, and substrate), and the 3D-local yield maps were introduced in relation to the yield strength ratio of the coating to the substrate (Yf /Yb ) and the ratio of the coating thickness to the Hertzian contact radius (t/a0 ). Finally, the effect of critical friction coefficient on the transition of yielding positions was discussed. | |
publisher | The American Society of Mechanical Engineers (ASME) | |
title | Three-Dimensional Local Yield Maps of Hard Coating Under Sliding Contact | |
type | Journal Paper | |
journal volume | 134 | |
journal issue | 2 | |
journal title | Journal of Tribology | |
identifier doi | 10.1115/1.4005265 | |
journal fristpage | 21301 | |
identifier eissn | 1528-8897 | |
keywords | Friction | |
keywords | Coating processes | |
keywords | Coatings | |
keywords | Stress | |
keywords | Yield strength | |
keywords | Thickness AND Pressure | |
tree | Journal of Tribology:;2012:;volume( 134 ):;issue: 002 | |
contenttype | Fulltext |