Journal of Theoretical
and Applied Mechanics

51, 1, pp. 203-214, Warsaw 2013

Phenomenological modeling of mechanical properties of metal foam

Tadeusz Wegner, Dariusz Kurpisz
In this paper, constitutive relations for metal foam under complex load are introduced using a phenomenological concept. On the basis of stress-strain and transversal-longitudinal strain dependencies in uniaxial tests, a form of the function for strain energy density is specified, and further, the criterion for loss of stability due to the occurrence of plastic flow is defined. The theoretical investigations are illustrated by a short numerical example.
Keywords: metal foam; strain energy density function; phenomenological method of modeling; energy conservation principle