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An energy-equivalent d+/d- damage model with enhanced microcrack closure-reopening capabilities for cohesive-frictional materials
dc.contributor.author | Cervera Ruiz, Miguel |
dc.contributor.author | Tesei, Claudia |
dc.contributor.other | Universitat Politècnica de Catalunya. Departament d'Enginyeria Civil i Ambiental |
dc.date.accessioned | 2017-05-09T14:48:40Z |
dc.date.available | 2017-05-09T14:48:40Z |
dc.date.issued | 2017-04 |
dc.identifier.citation | Cervera, M., Tesei, C. An energy-equivalent d+/d- damage model with enhanced microcrack closure-reopening capabilities for cohesive-frictional materials. "Materials", Abril 2017, vol. 10, núm. 4, p. 1-30. |
dc.identifier.issn | 1996-1944 |
dc.identifier.uri | http://hdl.handle.net/2117/104238 |
dc.description.abstract | In this paper, an energy-equivalent orthotropic d+/d- damage model for cohesive-frictional materials is formulated. Two essential mechanical features are addressed, the damage-induced anisotropy and the microcrack closure-reopening (MCR) effects, in order to provide an enhancement of the original d+/d- model proposed by Faria et al. 1998, while keeping its high algorithmic efficiency unaltered. First, in order to ensure the symmetry and positive definiteness of the secant operator, the new formulation is developed in an energy-equivalence framework. This proves thermodynamic consistency and allows one to describe a fundamental feature of the orthotropic damage models, i.e., the reduction of the Poisson’s ratio throughout the damage process. Secondly, a “multidirectional” damage procedure is presented to extend the MCR capabilities of the original model. The fundamental aspects of this approach, devised for generic cyclic conditions, lie in maintaining only two scalar damage variables in the constitutive law, while preserving memory of the degradation directionality. The enhanced unilateral capabilities are explored with reference to the problem of a panel subjected to in-plane cyclic shear, with or without vertical pre-compression; depending on the ratio between shear and pre-compression, an absent, a partial or a complete stiffness recovery is simulated with the new multidirectional procedure |
dc.format.extent | 30 p. |
dc.language.iso | eng |
dc.rights | Attribution 3.0 Spain |
dc.rights.uri | http://creativecommons.org/licenses/by/3.0/es/ |
dc.subject | Àrees temàtiques de la UPC::Enginyeria civil::Materials i estructures |
dc.subject.lcsh | Materials--Fatigue |
dc.subject.other | cohesive-frictional materials |
dc.subject.other | damage-induced orthotropy |
dc.subject.other | microcrack closure-reopening effects |
dc.subject.other | cyclic loading |
dc.subject.other | energy equivalence |
dc.subject.other | spectral decomposition |
dc.title | An energy-equivalent d+/d- damage model with enhanced microcrack closure-reopening capabilities for cohesive-frictional materials |
dc.type | Article |
dc.subject.lemac | Materials -- Fatiga |
dc.contributor.group | Universitat Politècnica de Catalunya. RMEE - Grup de Resistència de Materials i Estructures en l'Enginyeria |
dc.identifier.doi | 10.3390/ma10040433 |
dc.description.peerreviewed | Peer Reviewed |
dc.relation.publisherversion | http://www.mdpi.com/1996-1944/10/4/433 |
dc.rights.access | Open Access |
local.identifier.drac | 20335578 |
dc.description.version | Postprint (published version) |
local.citation.author | Cervera, M.; Tesei, C. |
local.citation.publicationName | Materials |
local.citation.volume | 10 |
local.citation.number | 4 |
local.citation.startingPage | 1 |
local.citation.endingPage | 30 |
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