NDLI: A structurally based viscoelastic model for passive myocardium in finite deformation

Content Provider	Springer Nature Link
Author	Shen, Jing Jin
Copyright Year	2016
Abstract	This paper discusses the finite-deformation viscoelastic modeling for passive myocardium tissue. The formulations established can also be applied to model other fiber-reinforced soft tissue. Based on the morphological structure of the myocardium, a specific free-energy function is constructed to reflect its orthotropicity. After deriving the stress–strain relationships in the simple shear deformation, a genetic algorithm is used to optimally estimate the material parameters of the myocardial constitutive equation. The results show that the proposed myocardial model can well fit the shear experimental data. To validate the viscoelastic model, it is used to predict the creep and the dynamic responses of a cylindrical model of the left ventricle. Upon comparing the results calculated by the proven myocardial elastic model with those by the viscoelastic model, the merits of the latter are discussed.
Starting Page	491
Ending Page	509
Page Count	19
File Format	PDF
ISSN	01787675
Journal	Computational Mechanics
Volume Number	58
Issue Number	3
e-ISSN	14320924
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2016-06-06
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Finite viscoelasticity Myocardium Constitutive model Orthotropicity Theoretical and Applied Mechanics Computational Science and Engineering Classical Continuum Physics
Content Type	Text
Resource Type	Article
Subject	Applied Mathematics Ocean Engineering Computational Theory and Mathematics Mechanical Engineering Computational Mechanics Computational Mathematics

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