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Constitutive modeling and simulation of energy absorbing polyurethane foam under impact loading
Author(s) -
Sherwood James A.,
Frost Colin C.
Publication year - 1992
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.760321611
Subject(s) - polyurethane , materials science , composite material , compression (physics) , strain rate , compressive strength , constitutive equation , strain (injury) , stress (linguistics) , structural engineering , finite element method , medicine , linguistics , philosophy , engineering
The compressive‐stress strain response of polyurethane foam under uniaxial compressive impact loading has been studied. The development of a uniaxial constitutive model from strain rate controlled compression tests is detailed. Density and temperature functions have been added to the integral power model proposed by Schwaber, Meincke, and Nagy. The model assumes that the effects of density, temperature, strain and strain rate on stress are separable functions. The model correlated well with actual static compression tests and was used successfully to predict the impact response of energy absorbing polyurethane foam under uniaxial compressive loading.