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An analytical solution to the elastic-plastic behavior of metal matrix composites under tensile loading

Khosoussi, S ; Sharif University of Technology

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  1. Type of Document: Article
  2. Abstract:
  3. An analytical approach is proposed for studying the elastic-plastic behavior of short fiber reinforced metal matrix composites under tensile loading. In the proposed method, a micromechanical approach is employed, considering an axi-symmetric unit cell including one fiber and the surrounding matrix. First, the governing equations and the boundary conditions are derived and the elastic solution is obtained based on some shear lag type methods. A plastic deformation is considered for the matrix under each small tensile loading step. Then, applying the successive elastic solutions method, all the plastic strain terms are obtained for the matrix. Thereafter, the elastic-plastic stress transfer behavior of the composite is studied considering this plastic deformation. The results are finally compared with the numerical results obtained from the FE analysis of the considered micromechanical model. The proposed method is capable of predicting all plastic strain terms in the matrix and all the stress terms, as well
  4. Keywords:
  5. Elastoplasticity ; Fiber reinforced metals ; Metallic matrix composites ; Micromechanics ; Plastic deformation ; Polymer matrix composites ; Tensile stress ; Analytical approach ; Elastic-plastic behavior ; Elastic-plastic stress ; Governing equations ; Micro-mechanical modeling ; Micromechanical approach ; Short fiber reinforced metal matrix composites ; Surrounding matrix ; Loading
  6. Source: 29th Congress of the International Council of the Aeronautical Sciences, ICAS 2014 ; 2014
  7. URL: http://www.icas.org/ICAS_ARCHIVE/ICAS2014/data/papers/2014_0678_paper.pdf