An Interface Damage Model for the  Simulation of Delamination Under  Variable-Mode Ratio in Composite  Materials

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dc.contributor.author	Turon Travesa, Albert
dc.contributor.author	Camanho, Pedro Manuel Ponces Rodrigues de Castro
dc.contributor.author	Costa i Balanzat, Josep
dc.contributor.author	Dávila, Carlos G.
dc.date	2013-09-17T13:28:16Z
dc.date	2013-09-17T13:28:16Z
dc.date	2004-10
dc.identifier.citation	007697
dc.identifier.uri	http://hdl.handle.net/10256/8245
dc.format	application/pdf
dc.language.iso	eng
dc.publisher	National Aeronautics and Space Administration
dc.relation	Reproducció digital del document publicat a: http://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.65.5544&rep=rep1&type=pdf
dc.relation	© NASA TP Technical Reports, 2004, núm. 213277
dc.relation	Articles publicats (D-EMCI)
dc.rights	Tots els drets reservats
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	Materials laminats
dc.subject	Laminated materials
dc.subject	Materials compostos -- Deslaminatge
dc.subject	Composite materials -- Delamination
dc.subject	Materials compostos -- Mètodes de simulació
dc.subject	Composite materials -- Simulation methods
dc.subject	Assaigs de materials
dc.subject	Materials -- Testing
dc.title	An Interface Damage Model for the Simulation of Delamination Under Variable-Mode Ratio in Composite Materials
dc.type	info:eu-repo/semantics/article
dc.type	info:eu-repo/semantics/publishedVersion
dc.description.abstract	A thermodynamically consistent damage model for the simulation of progressive delamination under variable mode ratio is presented. The model is formulated in the context of the Damage Mechanics. The constitutive equation that results from the deﬁnition of the free energy as a function of a damage variable is used to model the initiation and propagation of delamination. A new delamination initiation criterion is developed to assure that the formulation can account for changes in the loading mode in a thermodynamically consistent way. The formulation proposed accounts for crack closure eﬀets avoiding interfacial penetration of two adjacent layers after complete decohesion. The model is implemented in a ﬁnite element formulation. The numerical predictions given by the model are compared with experimental results

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