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dc.contributor.authorDestrade, Michel
dc.contributor.authorMurphy, J.G.
dc.contributor.authorGilchrist, M.
dc.contributor.authorRashid, J.G.
dc.contributor.authorSaccomandi, Giuseppe
dc.date.accessioned2016-03-02T12:42:42Z
dc.date.issued2015-03-13
dc.identifier.citationDestrade, M,Gilchrist, MD,Murphy, JG,Rashid, B,Saccomandi, G (2015) 'Extreme softness of brain matter in simple shear'. International Journal Of Non-Linear Mechanics, 75 :54-58.en_IE
dc.identifier.issn1878-5638
dc.identifier.urihttp://hdl.handle.net/10379/5586
dc.description.abstractWe show that porcine brain matter can be modelled accurately as a very soft rubber-like material using the Mooney-Rivlin strain energy function, up to strains as high as 60%. This result followed from simple shear experiments performed on small rectangular fresh samples (2.5 cm(3) and 1.1 cm(3)) at quasi-static strain rates. They revealed a linear shear stress-shear strain relationship (R-2 > 0.97), characteristic of Mooney-Rivlin materials at large strains. We found that porcine brain matter is about 30 times less resistant to shear forces than a silicone gel. We also verified experimentally that brain matter exhibits the positive Poynting effect of non-linear elasticity, and numerically that the stress and strain fields remain mostly homogeneous throughout the thickness of the samples in simple shear. (C) 2015 Elsevier Ltd. All rights reserved.en_IE
dc.description.sponsorshipPartial funding by a “New Foundations” award from the Irish Research Councilen_IE
dc.formatapplication/pdfen_IE
dc.language.isoenen_IE
dc.publisherElsevieren_IE
dc.relation.ispartofInternational Journal Of Non-Linear Mechanicsen
dc.subjectMechanics of brain matteren_IE
dc.subjectSimple shearen_IE
dc.subjectConstitutive modellingen_IE
dc.subjectExperimental testingen_IE
dc.subjectSimulationsen_IE
dc.subjectPoynting effecten_IE
dc.subjectTissueen_IE
dc.subjectStrainen_IE
dc.subjectDeformationen_IE
dc.subjectInjuryen_IE
dc.subjectModelen_IE
dc.subjectMathematicsen_IE
dc.titleExtreme softness of brain matter in simple shearen_IE
dc.typeArticleen_IE
dc.date.updated2015-10-09T08:17:10Z
dc.identifier.doi10.1016/j.ijnonlinmec.2015.02.014
dc.local.publishedsourcehttp://www.sciencedirect.com/science/article/pii/S0020746215000529en_IE
dc.description.peer-reviewedpeer-reviewed
dc.contributor.funder|~|
dc.description.embargo2017-03-13
dc.internal.rssid9279736
dc.local.contactMichel Destrade, Room Adb-1002, Áras De Brun, School Of Mathematics, Nui Galway. 2344 Email: michel.destrade@nuigalway.ie
dc.local.copyrightcheckedNo
dc.local.versionPUBLISHED
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