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dc.contributor.authorKulkarni, S.G.
dc.contributor.authorGao, X.-L.
dc.contributor.authorHorner, S.E.
dc.contributor.authorMortlock, R.F.
dc.contributor.authorZheng, J.Q.
dc.date.accessioned2018-01-16T23:33:19Z
dc.date.available2018-01-16T23:33:19Z
dc.date.issued2014
dc.identifier.citationS.G. Kulkarni, X.-L. Gao, S.E. Horner, R.F. Mortlock, J.Q. Zheng. "A transversely isotropiv visco-hyperelastic constitutive model for soft tissues," Mathematics and Mechanics of Solids, v.31, no.6, (2014), pp. 747-770.en_US
dc.identifier.urihttp://hdl.handle.net/10945/56668
dc.description.abstractA transversely isotropic visco-hyperelastic constitutive model is provided for soft tissues, which accounts for large deformations, high strain rates, and short-term memory effects. In the first part, a constitutive model for quasi-static deformations of soft tissues is presented, in which a soft tissue is simulated as a transversely isotropic hyperelastic material composed of a matrix and reinforcing fibers. The strain energy density function for the soft tissue is additively decomposed into two terms: a neo-Hookean function for the base matrix, and a polyconvex polynomial function of four invariants for the fibers. A comparison with existing experimental data for porcine brain tissues and bovine pericardium shows that this new model can well represent the quasi-static mechanical behavior of soft tissues. In the second part, a viscous potential is proposed to describe the rate-dependent short-term memory effects, resulting in a visco-hyperelastic constitutive model. This model is tested for a range of strain rates from 0.1 /s to 90 /s and for multiple loading scenarios based on available experimental data for porcine and human brain tissues. The model can be applied to other soft tissues by using different values of material and fitting parameters.en_US
dc.description.sponsorshipU.S. Armyen_US
dc.format.extent24 p.en_US
dc.publisherSageen_US
dc.rightsThis publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.en_US
dc.titleA transversely isotropic visco-hyperelastic constitutive model for soft tissuesen_US
dc.typeArticleen_US
dc.contributor.corporateNaval Postgraduate School (U.S.)en_US
dc.contributor.departmentMechanical Engineeringen_US
dc.subject.authorSoft tissueen_US
dc.subject.authorConstitutive modelen_US
dc.subject.authorHyper-elastic materialen_US
dc.subject.authorTransversely isotropic materialen_US
dc.subject.authorStrain energyen_US
dc.subject.authorViscous potentialen_US
dc.subject.authorStrain rateen_US
dc.subject.authorElasticity tensoren_US
dc.subject.authorViscosity tensoren_US


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