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dc.contributor.authorSánchez Molina, David
dc.contributor.authorGarcía Vilana, Silvia
dc.contributor.authorLlumà Fuentes, Jordi
dc.contributor.authorGaltés Vicente, Ignasi
dc.contributor.authorVelázquez Ameijide, Juan
dc.contributor.authorRebollo-Soria, M. Carmen
dc.contributor.authorArregui Dalmases, Carlos
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Resistència de Materials i Estructures a l'Enginyeria
dc.contributor.otherUniversitat Politècnica de Catalunya. Departament de Ciència i Enginyeria de Materials
dc.identifier.citationSanchez, D. [et al.]. Mechanical behavior of blood vessels: elastic and viscoelastic contributions. "Biology-Basel", 26 Agost 2021, vol. 10, núm. 9, p. 1-18.
dc.description.abstractThe mechanical properties of the cerebral bridging veins (CBVs) were studied using advanced microtensile equipment. Detailed high-quality curves were obtained at different strain rates, showing a clearly nonlinear stress–strain response. In addition, the tissue of the CBVs exhibits stress relaxation and a preconditioning effect under cyclic loading, unequivocal indications of viscoelastic behavior. Interestingly, most previous literature that conducts uniaxial tensile tests had not found significant viscoelastic effects in CBVs, but the use of more sensitive tests allowed to observe the viscoelastic effects. For that reason, a careful mathematical analysis is presented, clarifying why in uniaxial tests with moderate strain rates, it is difficult to observe any viscoelastic effect. The analysis provides a theoretical explanation as to why many recent studies that investigated mechanical properties did not find a significant viscoelastic effect, even though in other circumstances, the CBV tissue would clearly exhibit viscoelastic behavior. Finally, this study provides reference values for the usual mechanical properties, as well as calculations of constitutive parameters for nonlinear elastic and viscoelastic models that would allow more accurate numerical simulation of CBVs in Finite Element-based computational models in future works.
dc.format.extent18 p.
dc.rightsAttribution-NonCommercial-NoDerivs 3.0 Spain
dc.subjectÀrees temàtiques de la UPC::Enginyeria biomèdica::Biomecànica
dc.subject.otherCollagenous tissue
dc.subject.otherTissue characterization
dc.subject.otherStrain rate dependent materials
dc.titleMechanical behavior of blood vessels: elastic and viscoelastic contributions
dc.contributor.groupUniversitat Politècnica de Catalunya. GRABI - Grup de Recerca Aplicada en Biomecànica de l'Impacte
dc.contributor.groupUniversitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
dc.description.peerreviewedPeer Reviewed
dc.rights.accessOpen Access
dc.description.versionPostprint (published version)
local.citation.authorSanchez, D.; Garcia-Vilana, Silvia; Lluma, J.; Galtés, I.; Velazquez-Ameijide, J.; Rebollo-Soria, M.; Arregui-Dalmases, C.

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