Numéro
J. Phys. IV France
Volume 01, Numéro C3, Octobre 1991
DYMAT 1991 - 3rd International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading
Page(s) C3-909 - C3-916
DOI http://dx.doi.org/10.1051/jp4:19913128
DYMAT 1991 - 3rd International Conference on Mechanical and Physical Behaviour of Materials under Dynamic Loading

J. Phys. IV France 01 (1991) C3-909-C3-916

DOI: 10.1051/jp4:19913128

THE CONSTITUTIVE MODELING OF POROUS METALS AT HIGH RATES OF DEFORMATION

M. da SILVA and K. T. RAMESH

Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD 21218, U.S.A


Abstract
The constitutive behavior of fully dense and porous Ti-6Al-4V at high rates of deformation is investigated using a Kolsky compression bar : stress-strain curves are obtained for homogeneous compressive deformations at strain rates between 102-104s-1. In addition to the high rate testing, the behavior of the fully dense and porous materials in quasistatic compression is obtained. The porous metal does show a higher degree of strain hardening at both low and high rates due to the compressibility of the pores.



© EDP Sciences 1991