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Open‐cell flexible polyurethane foams: Comparison of static and dynamic compression properties
Author(s) -
Shuttleworth R. W.,
Shestopal V. O.,
Goss P. C.
Publication year - 1985
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1985.070300129
Subject(s) - polyurethane , materials science , composite material , deformation (meteorology) , compression (physics) , buckling , dynamic stress , stress (linguistics) , drop (telecommunication) , strain rate , stress–strain curve , dynamic range compression , dynamic loading , mechanical engineering , engineering , linguistics , philosophy
Dynamic stress–strain diagrams of polyurethane packaging foams have been obtained from free fall drop tests. The dynamic curves become higher as the deformation rates increase. An equation is proposed to describe the stress–strain dependence for different deformation rates. The model of filament buckling explains the form of the observed stress–strain dependence and phenomena related to repeated loading of the foam.