Journal ArticleDOI
On the Role of Inhomogeneities in the Deformation of Elastic Bodies
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In this article, the authors investigate the consequences of such an assumption and show that it is clearly inappropriate for many classes of inhomogeneous bodies, both qualitatively and quantitatively, with regard to local measures such as stresses and strains.Abstract:
It is quite common to approximate “mildly” inhomogeneous bodies as homogeneous bodies belonging to a certain constitutive class in view of the simplification that such an approximation accords. In this study, we investigate the consequences of such an assumption and we show that it is clearly inappropriate for many classes of inhomogeneous bodies. We choose specific boundary value problems to illustrate the fact that we could be grossly in error, both qualitatively and quantitatively, with regard to local measures such as stresses and strains. In the examples considered, we find that, for global quantities such as applied forces and moments, the error could be significant. Not only could the material parameters found from, say, an extension test and torsion test, which neglect the inhomogeneity of the body, be quite different from one that incorporates the inhomogeneity, but also the values for the material parameter in the homogenized approximation gleaned from these different experiments could be differ...read more
Citations
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Stress analysis of thick pressure vessel composed of functionally graded incompressible hyperelastic materials
Yavar Anani,Gholam Hosein Rahimi +1 more
TL;DR: In this article, the authors developed stress analysis of functionally graded hyperelastic thick spherical shell subjected to internal and external pressure using modified neo-Hookean strain energy function with variable material parameters.
Constitutive modeling for biodegradable polymers for application in endovascular stents
da Silva Soares,Joao Filipe +1 more
TL;DR: Modeling the enhancement of extracellular matrix quantity and quality in large-deformation mechanically-conditioned heart valve tissue engineering and the role of oscillatory flow and dynamic mechanical conditioning on dense connective tissue formation in mesenchymal stem cell derived heart valves tissue engineering.
Journal ArticleDOI
Thermomechanical analysis of hyperelastic thick-walled cylindrical pressure vessels, analytical solutions and FEM
TL;DR: In this paper, the authors employed the multiplicative decomposition of the deformation gradient, both analytically and numerically thermomechanical analysis of a hyperelastic thick-walled cylindrical pressure vessel are presented.
Journal ArticleDOI
Inflation, Extension, Torsion and Shearing of an Inhomogeneous Compressible Elastic Right Circular Annular Cylinder:
TL;DR: In this article, the authors studied the inflation, extension, torsion and shearing of an isotropic inhomogeneous compressible annular right circular cylinder and showed that the deformation of the cylinder can be both qualitatively and quantitatively far apart from its homogeneous counterpart.
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The torsion of a composite, nonlinear-elastic cylinder with an inclusion having initial large strains
TL;DR: In this paper, the authors considered a static problem of torsion of a cylinder composed of incompressible, nonlinear-elastic materials at large deformations and derived a universal solution based on the universal solution.
References
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Journal ArticleDOI
On the Lambert W function
TL;DR: A new discussion of the complex branches of W, an asymptotic expansion valid for all branches, an efficient numerical procedure for evaluating the function to arbitrary precision, and a method for the symbolic integration of expressions containing W are presented.
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Elasticity of soft tissues in simple elongation
TL;DR: A theoretical framework is presented in which the elastic properties of soft tissues can be described and it is shown that the mathematical formulation works well also in reducing published data on the series element of the heart and striated muscles, and the skin.
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Deformations possible in every isotropic, incompressible, perfectly elastic body
TL;DR: In this article, the authors derive trois solutions des equations de l'elasticite non lineaire and determine les deformations qui sont possibles dans un solide isotrope and incompressible quelconque.
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Deformations Possible in Every compressible, Isotropic, Perfectly Elastic Material
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Controllable deformations of incompressible simple materials
TL;DR: In this article, it was shown that these five families of deformations are controllable also for homogeneous, isotropic, incompressible simple materials, i.e., simple materials with no body forces.