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Calculating post-uniform deformation energy using tensile parameters

Khani Moghanaki, S ; Sharif University of Technology

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  1. Type of Document: Article
  2. DOI: 10.1179/1743284713Y.0000000390
  3. Abstract:
  4. Post-uniform deformation energy of materials is defined as absorbed energy per unit area after necking. The energy is constant for a material type and its experienced specific processing history and also depends on its mechanical parameters as workhardening exponent, strain rate sensitivity, post-necking extension and inhomogeneity factor. Different methods such as single and multiple tensile testing had been proposed in the literature to calculate tearing energy, but the effect of post-necking extension had not been expressed explicitly. A new model by implementing uniform and failure elongations with the combination of Unwin theory is introduced. Based on the model, it was shown that tearing energy was a constant portion of uniform deformation energy in every specific material, and its value for alloys of aluminium, copper and brass was calculated through previous and new developed models
  5. Keywords:
  6. Modelling ; Post-uniform deformation energy ; Metal forming ; Models ; Deformation energy ; Inhomogeneity factor ; Mechanical parameters ; Post-necking extension ; Strain rate sensitivity ; Tearing energy ; Tensile parameters ; Uniform deformation ; Tensile testing
  7. Source: Materials Science and Technology (United Kingdom) ; Vol. 30, issue. 6 , 2014 , pp. 715-718 ; ISSN: 02670836
  8. URL: http://www.maneyonline.com/doi/abs/10.1179/1743284713Y.0000000390