Premium
Deformational behavior of polyolefins at high temperature and strain rate: Experimental analysis and constitutive laws
Author(s) -
BriaticoVangosa Francesco,
Rink Marta,
D'Oria Francesco,
Verzelli Alberto
Publication year - 2000
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.11285
Subject(s) - ogden , materials science , strain rate , deformation (meteorology) , composite material , strain (injury) , constitutive equation , ultimate tensile strength , volume (thermodynamics) , uniaxial tension , polymer , stress (linguistics) , forensic engineering , thermodynamics , physics , medicine , finite element method , engineering , linguistics , philosophy
Large deformation behavior of two polyolefins has been investigated under high temperatures and high strain rate conditions. During uniaxial tensile tests at constant true strain rate, volume, stress, and deformation ratio were measured. At the temperatures considered, the mechanical behavior tends to be elastic (rate‐independent) as strain rate increases. Thus elastic models can be used to describe the deformational behavior of these resins under such conditions. Models proposed by Ogden, by Coleman as modified by Radi, and by Sweeney‐Ward have been considered to fit experimental data and their adequacy has been discussed. Sweeney‐Ward's model has been found to provide the best fit of the examined polymer's behavior at high temperatures and high strain rates.