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Novel model for uniaxial strain‐rate–dependent stress–strain behavior of ethylene–propylene–diene monomer rubber in compression or tension
Author(s) -
Song Bo,
Chen Weig,
Cheng Ming
Publication year - 2004
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.20095
Subject(s) - materials science , strain rate , natural rubber , compression (physics) , monomer , tension (geology) , diene , composite material , strain (injury) , ethylene propylene rubber , epdm rubber , stress (linguistics) , polymer , copolymer , medicine , linguistics , philosophy
Based on quasi‐static and dynamic experimental results, a novel strain‐rate–dependent model for ethylene–propylene–diene monomer (EPDM) rubber was developed. This model, composed of a base model and rate‐sensitivity terms, has a relatively simple form to be embedded in computer codes for numerical simulations. The base model combines a Maxwell model and a Mooney function. The Maxwell model is necessary to describe small‐strain behavior, whereas the Mooney function dominates the large‐strain behavior. Each of these two components is then multiplied by a rate‐sensitive term to describe the material's strain‐rate sensitivities at both small and large strains. This model gives a good description of EPDM response in both compression and tension over a wide range of strain rates with a minimum number of material constants. © 2004 Wiley Periodicals, Inc. J Appl Polym Sci 92: 1553–1558, 2004