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The sliding frictional contact problem in two dimensional graded materials loaded by a flat stamp

Khajehtourian, R ; Sharif University of Technology | 2012

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  1. Type of Document: Article
  2. DOI: 10.4028/www.scientific.net/AMR.463-464.336
  3. Publisher: 2012
  4. Abstract:
  5. In this article, the sliding frictional contact problem for a half-plane which is graded in two dimensions is studied. The effect of medium properties gradient and coefficient of friction in contact mechanics of two dimensional (2D) graded materials which is loaded by a flat stamp have been investigated by developing two Finite Element (FE) models, in macro and micro scales. Discretizing the graded half-plane by quadrants for whose material properties are specified at the centroids by Mori-Tanaka method in both directions has been used to model the 2D FGM in macro scale. In micro scale, the ideal solid quadrant particles which are spatially distributed in a homogeneous matrix used to model the FGM structure. Also, boundary conditions and loading of both models are the same. The study is focused on determining the contact stress distributions on contact surface. The contact mechanic problem of 2D graded materials has been solved and the results are presented for various combinations of friction coefficient and material non-homogeneity constant parameters Analyses and comparison of the results showed that micro and macro scale results are in a very good agreement
  6. Keywords:
  7. Micro scale model ; Stress distribution ; 2d graded ; Coefficient of frictions ; Constant parameters ; Contact mechanics ; Contact stress distributions ; Contact surface ; Finite element models ; Friction coefficients ; Graded materials ; Half-planes ; Macro scale ; Material property ; Matrix ; Micro and macro ; Micro-scales ; Mori Tanaka method ; Nonhomogeneity ; Sliding frictional contact ; Friction ; Stress concentration ; Two dimensional ; Functionally graded materials
  8. Source: Advanced Materials Research, 7 January 2012 through 8 January 2012 ; Volume 463-464 , January , 2012 , Pages 336-342 ; 10226680 (ISSN) ; 9783037853634 (ISBN)
  9. URL: http://www.scientific.net/AMR.463-464.336