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Constitutive modelling of a polymeric material subjected to chemical exposure
Affiliation:1. Institut für Angewandte Mathematik, Universität Bonn, 53115 Bonn, Germany;2. Institut für Numerische Simulation, Universität Bonn, 53115 Bonn, Germany;1. Faculty of Mechanical Engineering, Technion, Haifa 32000, Israel;2. Rafael Advanced Defense Systems, DZ300, Haifa 3102102, Israel;1. Dpto. de Economía e Historia Económica, Universidad de Salamanca, Campus Miguel de Unamuno, Ed. FES, 37007, Salamanca, Spain;2. Universidad Técnica Federico Santa María, Avenida España, 1680, Valparaíso, Chile;3. Inst. Universitario de Física Fundamental y Matemáticas, Universidad de Salamanca, Casas del parque 1, 37008, Salamanca, Spain;1. Central South University, School of Resource and Safety Engineering, Changsha, Hunan 410075, PR China;2. Jiangxi University of Science and Technology, Ganzhou, Jiangxi 341000, PR China;3. Gannan Normal University, Ganzhou, Jiangxi 341000, PR China;1. HB BerRit, Solhemsbackarna 73, SE-163 56 Spånga, Sweden;2. Institute of Computer Science, Cracow University of Technology, Pl 31-155 Cracow, Poland
Abstract:Important effects resulting from chemical exposure of a polymeric material are the alterations in its stress–strain response, its sensitivity to strain-rate effects and the development of irreversible strains. The paper presents the results of experiments conducted on membranes subjected to chemical exposure and discusses the development of a single constitutive model that is applicable to both untreated and chemically-treated materials. The constitutive modelling of both categories of polymeric materials takes into consideration the influence of large strains, strain-rate effects and irreversible effects.
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