Modeling the compressive stress-strain response of polymeric foams

Spathis, G; Kontou, E

dc.contributor.author	Spathis, G	en
dc.contributor.author	Kontou, E	en
dc.date.accessioned	2014-03-01T01:36:20Z
dc.date.available	2014-03-01T01:36:20Z
dc.date.issued	2011	en
dc.identifier.issn	0021-8995	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/21285
dc.subject	compression	en
dc.subject	mechanical properties	en
dc.subject	microstructure	en
dc.subject	modeling	en
dc.subject.classification	Polymer Science	en
dc.subject.other	Cellular material	en
dc.subject.other	Closed cells	en
dc.subject.other	Complex deformation	en
dc.subject.other	compression	en
dc.subject.other	Elastic regime	en
dc.subject.other	External loading	en
dc.subject.other	Limit Load	en
dc.subject.other	Macroscopic deformations	en
dc.subject.other	Mechanical behavior	en
dc.subject.other	Micro mechanics model	en
dc.subject.other	modeling	en
dc.subject.other	Polymeric foam materials	en
dc.subject.other	Polymeric foams	en
dc.subject.other	Rate dependence	en
dc.subject.other	Stress-strain diagram	en
dc.subject.other	Stress-strain response	en
dc.subject.other	Viscoplastic	en
dc.subject.other	Compressive stress	en
dc.subject.other	Deformation	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Microstructure	en
dc.subject.other	Polymers	en
dc.subject.other	Strain rate	en
dc.subject.other	Tensile stress	en
dc.subject.other	Unloading	en
dc.subject.other	Stress-strain curves	en
dc.title	Modeling the compressive stress-strain response of polymeric foams	en
heal.type	journalArticle	en
heal.identifier.primary	10.1002/app.33848	en
heal.identifier.secondary	http://dx.doi.org/10.1002/app.33848	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	The mechanical behavior of cellular materials appears to have, for both open and closed cells, similar characteristics. The compressive stress-strain diagram contains a nearly elastic regime; this leads to a limit load, followed by a plateau extending to a strain of about 50% on average. All of the main features of this curve are related to the material's microstructure. In this study, taking into account the complex deformation mechanisms occurring in a cellular material under external loading, we introduced a statistical micromechanics model. The geometry of our analysis was based on a previous study, where the deformation of the individual struts was connected to the macroscopic deformation tensor. Assuming further that deformation was separated into elastic and viscoplastic parts and following a specific kinematic procedure, we simulated the compressive stress-strain response, the rate dependence, and the loading-unloading behavior of polymeric foam materials. (C) 2011 Wiley Periodicals, Inc. J Appl Polym Sci 121: 3262-3268, 2011	en
heal.publisher	WILEY-BLACKWELL	en
heal.journalName	Journal of Applied Polymer Science	en
dc.identifier.doi	10.1002/app.33848	en
dc.identifier.isi	ISI:000291613900018	en
dc.identifier.volume	121	en
dc.identifier.issue	6	en
dc.identifier.spage	3262	en
dc.identifier.epage	3268	en