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Showing 1 to 16 of 16 for “"Kelvin-Voigt"”.
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Analysis and Approximation of Viscoelastic and Thermoelastic Joint-Beam Systems
… resulting from various damping models, including Kelvin-Voigt, Boltzmann, and thermoelastic damping. Approximation schemes will also be introduced. Finally, we look at optimal control for the Kelvin-Voigt model using a linear feedback regulator.
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Fractional derivative models and their use in the characterization of hydropolymer and in-vivo breast tissue viscoelasticity
… with as few as three parameters using the Kelvin-Voigt Fractional Derivative (KVFD) modeling approach. We propose to image these parameters for simulated and experimental imaging phantoms and to estimate them for normal and cancerous in-vivo breast tissues. After a detailed presentation of …
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Analysis of Discrete Fractional Operators and Discrete Fractional Rheological Models
… to rheological models such as Maxwell and Kelvin-Voigt, and then we construct and solve discrete fractional rheological constitutive equations. Finally, we finish this thesis by describing the conclusion and future work.</p>
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Bi-layered viscoelastic model for a step change in velocity and a constant acceleration stimulus for the human otolith organs
… viscoelastic solid and is modeled as a simple Kelvin-Voigt material. The governing differential equations of motion are derived and nondimensionalized yielding - three non-dimensional parameters: nondimensional viscosity, nondimensional elasticity and nondimensional density. These …
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Soft tissue viscoelastic properties: measurements, models and interpretation
… models for viscoelastic solids such as the Kelvin-Voigt model do not fully represent mechanical measurements in tissues because they are not material continua. Tissue properties are determined in part by fluid movement in the open- and closed-cell compartments found within a viscoelastic …
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A Hybrid Soft Soil Tire Model (HSSTM) For Vehicle Mobility And Deterministic Performance Analysis In Terramechanics Applications
… a lumped mass discretized tire model using Kelvin-Voigt elements is developed. To optimize the computational time of the code, different techniques were used in memory allocation, parameter initialization, code sequence, and multi-processing. This has resulted in significant improvements in …
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Characterization and numerical simulation of the microstructural and micromechanical viscoelastic behavior of oil sands using the discrete element method
… that the generalized Burgers model with five Kelvin-Voigt elements fully characterized the microscopic viscoelastic response of the material. The micromechanical and microstructural viscoelastic model developed in this study can predict the dynamic modulus and phase angle of the material with …
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Studies on Functional and Rheological Characteristics of Hispanic Cheeses
… and months of storage.<br /> Five-element Kelvin-Voigt model better predicted the creep compliance data for eight of different kinds of Hispanic cheeses compared to six-element model. It was observed that nine different cheeses showed significant difference (P</p>
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Quantitative estimates of mechanical properties from in vivo tumors of rodent animals
… curves that were fit to values predicted from a Kelvin-Voigt rheological model to find the elastic and viscous coefficients of the complex modulus. Subsequently, tumors were excised for rheometry testing to independently validate coefficient estimates and later histologically processed to …
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Uncoupled Stability of Haptic Simulation of Viscoelastic Virtual Environments
… environment (VE) in haptic simulation systems. Kelvin-Voigt (KV) and Hunt-Crossley (HC) are models commonly used to simulate viscoelastic environments in haptic simulation systems. Due to the sample-and-hold process, the range of dynamics - viscosity and elasticity, that can be rendered in a …
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Simetrías de Lie, leyes de conservación y análisis de Painlevé. Aplicaciones a modelos viscoelásticos.
… comportamiento viscoelástico son los modelos de Kelvin-Voigt y de Maxwell. En esta tesis doctoral, en segundo lugar, se estudia una generalización de la ecuación de viscoelasticidad del modelo de Kelvin-Voigt, que consiste en un modelo de parámetros parecido a un muelle y un amortiguador en …
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Prediction of Time-Dependent Stresses and Deflections in Prestressed, Concrete Girders: From Start of Fabrication to End of Service Life
… was developed for concrete creep using basic Kelvin-Voigt rheological models, modified to include time-dependent parameters. This new model was then calibrated against currently accepted creep models in order to optimize model parameters for a specific girder concrete. For the time-dependent …
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Simultaneous real-time viscoelasticity, mass and cell cycle monitoring for single adherent cancer cells
… with a representative two-degree-of-freedom Kelvin-Voigt model, is used to simultaneously obtain the elasticity (stiffness), viscosity and mass associated with individual adherent cancer cells. The research is unique as it decouples the heterogeneity of individual cells in our population and …
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Mechanics of Beams and Plates with Variable Mechanical Properties
… graded viscoelastic plates, modelled within the Kelvin–Voigt framework. Eight governing motion equations are derived via Hamilton’s principle and discretised using a weightedresidual method. The model is used to study the influence of bi-directional material composition, viscoelasticity, and …
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A viscoelastic hydrodynamic approach to the density fluctuations in classical liquids
… two fundamental viscoelastic models, namely, the Kelvin-Voigt model and the Maxwell model, it is found that viscoelasticity modifies the number and the values of the collective modes compared to the hydrodynamic results. In particular, depending on specific viscoelastic responses, either …
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Investigation on Physics-based Multi-scale Modeling of Contact, Friction, and Wear in Viscoelastic Materials with Application in Rubber Compounds
… the tearing energy vs crack tip velocity in a Kelvin-Voigt rubber model. Besides, two coupled iterative algorithms are developed to calculate the temperature field around the crack tip in addition to the tearing energy as a function of crack tip velocity. In this model, the effect of crack tip …