On a Phase-field model of damage for hybrid laminates with cohesive interfaces

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dc.contributor.authorBonetti, Elena
dc.contributor.authorCavaterra, Cecilia
dc.contributor.authorFreddi, Francesco
dc.contributor.authorRiva, Filippo
dc.date.accessioned2020-07-17T09:50:17Z
dc.date.available2020-07-17T09:50:17Z
dc.date.issued2020-07-17
dc.description.abstractIn this paper we investigate a rate{independent model for hybrid laminates described by a damage phase field approach on two layers coupled with a cohesive law governing the behaviour of their interface. For the analysis we adopt the notion of energetic evolution, based on global minimisation of the involved energy. Due to the presence of the cohesive zone, as already emerged in literature, compactness mathematical issues lead to the introduction of a fictitious variable replacing the physical one which represents the maximal opening of the interface displacement discontinuity reached during the evolution. A new strategy which allows to recover the equivalence between the fictitious and the real variable under general loading-unloading regimes is illustrated. The argument is based on temporal regularity of energetic evolutions. This regularity is achieved by means of a careful balance between the convexity of the elastic energy of the layers and the natural concavity of the cohesive energy of the interface.en_US
dc.identifier.urihttps://openscience.sissa.it/handle/1963/35387
dc.language.isoenen_US
dc.publisherSISSAen_US
dc.relation.ispartofseriesSISSA;18/2020/MATE
dc.subjectDamage phase field-modelen_US
dc.subjectCohesive interfaceen_US
dc.subjectEnergetic evolutionsen_US
dc.subjectTemporal regularityen_US
dc.titleOn a Phase-field model of damage for hybrid laminates with cohesive interfacesen_US
dc.typePreprinten_US
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