Hyperelastic Material
Mostrando 1-12 de 13 artigos, teses e dissertações.
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1. New nonlinear solution of nearly incompressible hyperelastic FGM cylindrical shells with arbitrary variable thickness and non-uniform pressure based on perturbation theory
Abstract In this paper, nonlinear analysis of thick cylindrical shells with arbitrary variable thickness made of hyperelastic FGM with radially variation of material properties in nearly incompressible state under non-uniform pressure loading is presented. Thickness and pressure of the shell vary in axial direction by linear and/or nonlinear functions. The g
Lat. Am. j. solids struct.. Publicado em: 28/10/2019
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2. Selection of a Hyper-Elastic Material Model - a Case Study for a Polyurethane Component
Abstract The aim of this study was to select an appropriate material model for a polyurethane rail pad. The considered material was assumed to be hyper-elastic, and model selection was limited only to the Mooney-Rivlin (M-R) material models available in the MSC.Marc/Mentat system. The selection of the most appropriate material model was based on the most acc
Lat. Am. j. solids struct.. Publicado em: 27/06/2019
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3. On the stability of internally pressurized thick-walled spherical and cylindrical shells made of functionally graded incompressible hyperelastic material
Abstract In this paper, stability analysis of thick-walled spherical and cylindrical shells made of functionally graded incompressible hyperelastic material subjected to internal pressure is presented. Instability point happens in the inflation of above mentioned shells and in this paper effect of material inhomogeneity and shell thickness has been investig
Lat. Am. j. solids struct.. Publicado em: 04/06/2018
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4. Nonlinear Forced Vibration Analysis of Dielectric-Elastomer Based Micro-Beam with Considering Yeoh Hyper-Elastic Model
Abstract The present study investigates nonlinear forced vibration of dielectric elastomer-based micro-beam. The nonlinear terms in beam equation are geometric and material one. Geometric nonlinearity is considered by von-Karman strain displacement relationship and the material nonlinearity is modeled with Yeoh hyper-elastic model. Galerkin and Multiple scal
Lat. Am. j. solids struct.. Publicado em: 2017-03
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5. Study Neo-Hookean and Yeoh Hyper-Elastic Models in Dielectric Elastomer-Based Micro-Beam Resonators
Abstract Micro-bridge resonator with dielectric elastomer that is sandwiched between two electrodes is studied here with geometric and material nonlinearity. Geometric nonlinearity is introduced with Von-Karman strain-displacement relationship. For material nonlinearity that is modeled rarely in articles, two hyper-elastic models are used here. Governing equ
Lat. Am. j. solids struct.. Publicado em: 2016-10
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6. Stress Analysis of Thick Spherical Pressure Vessel Composed of Transversely Isotropic Functionally Graded Incompressible Hyperelastic Materials
Abstract In this paper closed form analytical solution for stress components of thick spherical shell made of transversely isotropic functionally graded hyperelastic material subjected to internal and external pressure is presented. Reinforced neo-Hookean strain energy function with variable material parameters is used to model pressure vessel material. The
Lat. Am. j. solids struct.. Publicado em: 2016-03
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7. Numerical Simulation and Experimental Validation of the Inflation Test of Latex Balloons
Abstract Experiments and modeling aimed at assessing the mechanical response of latex balloons in the inflation test are presented. To this end, the hyperelastic Yeoh material model is firstly characterized via tensile test and, then, used to numerically simulate via finite elements the stress-strain evolution during the inflation test. The numerical pressur
Lat. Am. j. solids struct.. Publicado em: 2016
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8. Mechanical Characterization and FE Modelling of a Hyperelastic Material
AbstractThe aim of research work is to characterize hyperelastic material and to determine a suitable strain energy function (SEF) for an indigenously developed rubber to be used in flexible joint use for thrust vectoring of solid rocket motor. In order to evaluate appropriate SEF uniaxial and volumetric tests along with equi-biaxial and planar shear tests w
Mat. Res.. Publicado em: 2015-10
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9. DYNAMIC ANALYSIS OF HYPERLASTIC CIRCULAR MEMBRANES / ANÁLISE DINÂMICA DE MEMBRANAS CIRCULARES HIPERELÁSTICAS
This work presents an analysis of the nonlinear vibration response of a prestretched hyperelastic circular membrane subjected to finite deformations. The membrane material is assumed to be isotropic, homogeneous and neo-Hookean. Based on the theory of finite deformations for hyperelastic membranes, a variational formulation is developed. First the exact solu
Publicado em: 2009
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10. Avaliação experimental das relações tensão-deformação de um tecido de fibra de vidro recoberto com PTFE. / Experimental evaluation of the stress-strain relationships of a PTFE coated fiberglass fabric.
Com o crescente uso de estruturas de membrana tensionada, as relações tensãodeformação do tecido utilizado em sua fabricação devem ser bem entendidas. Deste modo, esta dissertação apresenta um estudo sobre o comportamento mecânico de um tecido arquitetônico PTFE-vidro, ressaltando seu complexo mecanismo de deformação que engloba efeitos de aniso
Publicado em: 2009
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11. Evaluation of nasal guard for sports activities: finite element analysis [ / Avaliação de protetor nasal para atividades desportivas: análise por elementos finitos
In recent years there has been an increase in the number of facial fractures in sports activities. As the nasal bone is in the weakness zone of the face, is one of the most affected by sports accidents. One of the solutions to avoid fracture or refracture is to use a nose guard when practicing sports. Up to date there is no standardization in relation to the
Publicado em: 2009
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12. NON-LINEAR BEHAVIOR AND INSTABILITY OF HYPERELASTIC MEMBRANES AND SHELLS / COMPORTAMENTO NÃO-LINEAR E INSTABILIDADE DE MEMBRANAS E CASCAS HIPERELÁSTICAS
This thesis investigates the large deformations of hyperelastic membranes and shells. The static nonlinear behavior and possible instabilities of the membrane are both analyzed. A detailed experimental analysis was carried out involving cylindrical membranes and shells with different geometries and initial axial forces and the influence of the axial force an
Publicado em: 2003