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Showing 1 to 18 of 18 for “"Mooney-Rivlin"”.
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Finite Coupled Torsion and Inflation of Functionally Graded Mooney-Rivlin Cylinders with and without Residual Stresses
… the large deformations of functionally graded Mooney-Rivlin circular cylinders, focusing on how radial grading of material moduli can be beneficially utilized. We investigate the finite deformations caused by pressures applied to the bounding surfaces and axial loads or twisting moments on the …
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Strain analysis in glenohumeral capsule through finite element modelling
… limits for the material coefficients of the Mooney-Rivlin model used to model the capsule. The Mooney-Rivlin model with the material coefficients C1 = 6, C10 = 6.5, and D1 = 0.12 converged for around 50% of the cycle. The results also suggest that the peak strain occurred on the inferior …
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On the predictive capability and stability of rubber material models
… of various rubber material models, namely the Mooney-Rivlin model, Arruda-Boyce model, Ogden model and the newly proposed Sussman-Bathe model, is investigated theoretically with continuum mechanics methods and tested numerically in various deformation situations using the finite element …
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Modelos mistos de elementos finitos para análise de grandes deformações
… equations for elastic and incompressible Mooney-Rivlin type materials are considered. Some results are presented and compared with other solutions.
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Estimation of nonlinear mechanical properties of atherosclerotic plaques
… atherosclerotic plaques, parameter estimation, Mooney-Rivlin model, optical coherence tomography, image noise.
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Stabilized space-time fluid-structure interaction techniques with the continuum element
… models: linearly-elastic, hyperelastic (Mooney-Rivlin), and Neo-Hookean. Futhermore, each structure model is tested with two different pressure profiles and two different aneurysm thicknesses. Finally, we suggest a procedural change for further investigation: instead of assuming …
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Composite Diaphragm Inflation: A Method for Probing the Rheological Functions of Cell -Cell Anchoring Junctions and Cytoskeletal Networks Within a Living Normal Human Epidermal Keratinocyte Sheet
… reservoir of finite vertical depth. Assuming a Mooney-Rivlin (MR) constitutive model, we quantitatively demonstrate a new non-traditional regression analysis for estimating values of the MR material parameters and residual membrane tension that best describe a set of experimental inflation …
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The performance of high speed reciprocating polymer seals in water
… The o-ring was modelled using the non-linear Mooney-Rivlin constitutive equation implemented in the finite element code ABAQUS. With this model, the contact stresses existing between the o-ring and the back of the polymer seal have been determined for a range of o-ring squeezes and rubber …
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Buckling of thin-walled cylinders from three dimensional nonlinear elasticity
… incompressible neo-Hookean material and of a Mooney-Rivlin material are rigorously obtained from the presented formulation.
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A Single-Stage Passive Vibration Isolation System for Scanning Tunneling Microscopy
… for the housing tube. Viton will be modeled as a Mooney-Rivlin hyperelastic material whose material parameters are previous studied, and Abaqus will be used as a Finite Element Analysis software to study the Viton gaskets’ natural frequencies. The natural frequencies of the aluminum hollow tube …
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Employing Fluid Structure Interaction Analyses to Reveal Insights in Atherosclerotic Progression in the Carotid Artery
… of blood, and considered the arterial walls as a Mooney-Rivlin hyperelastic solid. Low Time-Averaged Wall Shear Stress (TAWSS) below the threshold of 0.4 Pa is observed in the ICA region for the healthy (0%) and 30% stenosis cases, consistent with established studies. The 60% and 80% cases exhibit …
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On the Continuum-Mechanics of Nematic Elastomers
… Our energy density encompasses the successful Mooney-Rivlin description of rubber and the Oseen-Zocher-Frank description of nematic fluids as specializations. To investigate the nature of solutions, we derive a necessary and sufficient condition for ellipticity of the equilibrated governing …
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Effect of microstructure on mechanical behaviour of arterial tissue
… tissues were characterised with the modified Mooney-Rivlin constitutive material model. Curve fitting was used to compute the corresponding values of the model constants for each tissue type. Fitted material constants were found to differ amongst distinct types of tissue, while histological …
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Solution of Linear Elastostatic and Elastodynamic Plane Problems by the Meshless Local Petrov-Galerkin Method
… obtained when the disk material is modeled as Mooney-Rivlin. The latter set of results accounts for both material and geometric nonlinearities.
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Mechanical properties of arterial wall
… constitutive equation, derived from the Mooney-Rivlin model, was fitted to the experimental results (i.e. deformation rate study). In the proposed model, one of the material parameters is a linear function of the deformation rate. Overall, inverse finite element simulations using the …
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Material and Geometric Analysis of Structures Subjected to Large Deformation
… tension and planar tension. Nine-term Money-Rivlin constants are obtained through data regression. Finite element simulations have been conducted to simulate the deformed shapes of a membrane around several representative geometries under various vacuum pressure and constraint conditions. …
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Modelizado y optimización de problemas mecánicos no lineales mediante el Método de Elementos Finitos, RSM y ML
… were used in four different energy functions (Mooney-Rivlin, Arruda-Boyce, Gent and Ogden). The last step consisted in the application of optimization techniques such as the Multiple Response Surface Method (MSR) and the Genetic Algorithm (GA) method to obtain the optimal parameters in each of …
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Conformable and robust microfluidic force sensors for orthopaedic surgery
… on tensile and compressive testing, with the Mooney-Rivlin 5-parameter model being the most suitable for all elastomers. Profilometry and contact angle goniometry indicated a high dependence of elastomer fabrication parameters on the wetting interaction between the liquid and the channel. …