Viscoelastic Equations
Mostrando 1-12 de 21 artigos, teses e dissertações.
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1. Modeling and Computer Simulation of Viscoelastic Crypt Deformation
ABSTRACT Colorectal cancer morphogenesis begins at the cellular level from cell mutations in the intestinal epithelium cavities called crypts. These mutations lead to a pressure difference in the epithelium crypt walls, which can cause deformation and generate visible abnormalities in the epithelium. The geometrical modeling of these crypts and the mathemati
Trends in Computational and Applied Mathematics. Publicado em: 2022
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2. Analytical solution for nonlinear dynamic behavior of viscoelastic nano-plates modeled by consistent couple stress theory
Abstract This paper analyses the non-stationary free vibration and nonlinear dynamic behavior of the viscoelastic nano-plates. For this purpose, a size-dependent theory is developed in the framework of the consistent couple stress theory for viscoelastic materials. The previously presented modified couple stress theory was based on some consideration making
Lat. Am. j. solids struct.. Publicado em: 17/09/2018
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3. Time Domain Modeling and Simulation of Nonlinear Slender Viscoelastic Beams Associating Cosserat Theory and a Fractional Derivative Model
Abstract A broad class of engineering systems can be satisfactory modeled under the assumptions of small deformations and linear material properties. However, many mechanical systems used in modern applications, like structural elements typical of aerospace and petroleum industries, have been characterized by increased slenderness and high static and dynamic
Lat. Am. j. solids struct.. Publicado em: 2017-01
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4. Viscoelastic Substrates Effects on the Elimination or Reduction of the Sandwich Structures Oscillations Based on the Kelvin-Voigt Model
Abstract Effects of viscoelastic substrates on the sandwich structures oscillations are examined in this paper. In this regard, dynamic response of sandwich annular panels with FG polar orthotropic face sheets resting on viscoelastic substrate is presented. Young’s modulus in the radial and circumferential direction, shear modulus and density of each face
Lat. Am. j. solids struct.. Publicado em: 2017
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5. A time-domain finite element model reduction method for viscoelastic linear and nonlinear systems
AbstractMany authors have shown that the effective design of viscoelastic systems can be conveniently carried out by using modern mathematical models to represent the frequency- and temperature-dependent behavior of viscoelastic materials. However, in the quest for design procedures of real-word engineering structures, the large number of exact evaluations o
Lat. Am. j. solids struct.. Publicado em: 2015-06
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6. Fractional heat conduction with finite wave speed in a thermo-visco-elastic spherical shell
This problem deals with the thermo-elastic interaction due to step input of temperature on the stress free boundaries of a homogeneous visco-elastic orthotropic spherical shell in the context of a new consideration of heat conduction with fractional order generalized thermoelasticity. Using the Laplace transformation, the fundamental equations have been expr
Lat. Am. j. solids struct.. Publicado em: 2014-12
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7. Determination of the rheological properties of thin plate under transient vibration
The article deals with systematic analysis of the transient vibration of rectangular viscoelastic orthotropic thin 2D plate. The analysis is focused on specific deformation models of plate and for specific linear models of rheological properties. The viscoelastic isotropic and anisotropic (orthotropic) materials were investigated. The plate is loaded by gene
Lat. Am. j. solids struct.. Publicado em: 2013-01
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8. High-order finite volume method for solving viscoelastic fluid flows
Computational Fluid Dynamics (CFD) is widely used by polymer processing industries in order to evaluate polymeric fluid flows. A successful computational code must provide reliable predictions (modeling) in a fast and efficient way (simulation). In this work, a new approach to solve the governing equations of viscoelastic fluid flows is proposed. It is based
Publicado em: 2011
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9. Controlabilidade exata na fronteira e fórmula de reconstrução para equação viscoelástica
Neste trabalho obtivemos a controlabilidade exata na fronteira para equação viscoelástica por meio do Método da Unicidade de Hilbert. Para isto estudamos a existência, unicidade e regularidade de soluções forte, fraca e ultra fraca. A partir dos resultados de controlabilidade foi estabelecida a fórmula de reconstrução para a força externa.
Publicado em: 2010
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10. Caracterização viscoelástica por meio de ensaios de fluência e ruptura por fluência de compósitos poliméricos de matriz de resina epoxídica e fibra de carbono / VISCOELASTIC CHARACTERIZATION OF CARBON FIBER-EPOXY COMPOSITES BY CREEP AND CREEP RUPTURE TESTS
One of the main requirements for the use of fiber-reinforced polymer matrix composites in structural applications is the evaluation of their behavior during service life. The warranties of the integrity of these structural components demand a study of the time dependent behavior of these materials due to viscoelastic response of the polymeric matrix and of t
Publicado em: 2009
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11. LIMITES OPERACIONAIS DO PROCESSO DE REVESTIMENTO POR CORTINA / OPERABILITY LIMITS OF THE CURTAIN COATING PROCESS
Curtain coating is one the preferred methods for precision multi-layer coatings at high speeds. Curtain coating belongs to the class of premetered coating methods. Liquid falls as a sheet, or curtain, freely over a considerable height and under the action of gravity before it impinges onto the substrate being coated. Edge guide are needed to maintain at spec
Publicado em: 2009
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12. High-order finite volume method for solving viscoelastic fluid lows
Computational Fluid Dynamics (CFD) is widely used by polymer processing industries in order to evaluate polymeric fluid flows. A successful computational code must provide reliable predictions (modeling) in a fast and efficient way (simulation). In this work, a new approach to solve the governing equations of viscoelastic fluid flows is proposed. It is based
Brazilian Journal of Chemical Engineering. Publicado em: 2008-03