Proceedings of the Korean Powder Metallurgy Institute Conference (한국분말야금학회:학술대회논문집)

The Korean Powder Metallurgy & Materials Institute (한국분말재료학회 (*구 분말야금학회))
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The Elastic Behaviour of Metal Powder Compacts

  • Prado, J. M. (Departamento de Ciencia de Materiales e Ing. Metalurgica. Universidad Politecnica de Cataluna, CTM Centre Tecnologic) ;
  • Riera, M. D. (Departamento de Ciencia de Materiales e Ing. Metalurgica. Universidad Politecnica de Cataluna, CTM Centre Tecnologic)
  • Published : 2006.09.24
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Abstract

Cylindrical specimens with different levels of density have been submitted to uniaxial compression tests with loading and unloading cycles. The analysis of the elastic loadings shows a non linear elasticity which can be mathematically represented by means of a potential law. Results are explained by assuming that the total elastic strain is the contribution of two terms one deriving from the hertzian deformation of the contacts among particles and another that takes into account the linear elastic deformation of the powder skeleton. A simple model based in an one pore unit cell is presented to support the mathematical model.

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