scholarly journals A fully coupled constitutive model for thermo-hydro-mechanical analysis in elastic media with double porosity

2003 ◽  
Vol 30 (24) ◽  
Author(s):  
N. Khalili ◽  
A. P. S. Selvadurai
Keyword(s):  
Constitutive Model ◽  
Mechanical Analysis ◽  
Double Porosity ◽  
Elastic Media ◽  
Fully Coupled

scholarly journals Thermo-Viscoelastic Modeling of the Aircraft Tire Cornering

2015 ◽  
Vol 1099 ◽  
pp. 80-86 ◽  
Author(s):  
Iulian Rosu ◽  
Lama Elias-Birembaux ◽  
Frederic Lebon
Keyword(s):  
Thermal Evolution ◽  
Numerical Models ◽  
Frictional Heating ◽  
Mechanical Analysis ◽  
High Speeds ◽  
Numerical Studies ◽  
Deformation Dynamics ◽  
Viscoelastic Modeling ◽  
Fully Coupled ◽  
Tread Rubber

Some numerical models are proposed for simulate the aircraft tire behaviour on the ground in critical situations. Fully coupled thermo-mechanical analysis procedures taking into account finite deformation, dynamics and frictional contact are studied; the visco-elasticity properties of the rubber were identified. A good agreement is observed at moderate speed, thus the model is extrapolated to high speeds and seems able to predict results in cases for which it is not possible to obtain realistic experimental data. In order to understand the thermal evolution of tire tread rubber materials during rolling and skidding steps, new experimental and numerical studies were also realized on tire tread rubber. The aim of this approach is to simulate and understand the effect of frictional heating on the tire behaviour.

A Unified Macro- and Micromechanics Constitutive Model of Fully Coupled Fields

2014 ◽  
Vol 50 (2) ◽  
pp. 233-244 ◽  
Author(s):  
Z. Sun ◽  
X. Niu ◽  
Sh. Huang ◽  
Y. Song
Keyword(s):  
Constitutive Model ◽  
Coupled Fields ◽  
Fully Coupled

scholarly journals Explicit Solutions of the Boundary Value Problems for an Ellipse with Double Porosity

2016 ◽  
Vol 2016 ◽  
pp. 1-11 ◽  
Author(s):  
Lamara Bitsadze ◽  
Natela Zirakashvili
Keyword(s):  
Boundary Value Problems ◽  
Boundary Value ◽  
Convergent Series ◽  
Double Porosity ◽  
Theory Of Elasticity ◽  
Classical Elasticity ◽  
Dimensional Boundary ◽  
Uniformly Convergent ◽  
Isotropic Bodies ◽  
Fully Coupled

The basic two-dimensional boundary value problems of the fully coupled linear equilibrium theory of elasticity for solids with double porosity structure are reduced to the solvability of two types of a problem. The first one is the BVPs for the equations of classical elasticity of isotropic bodies, and the other is the BVPs for the equations of pore and fissure fluid pressures. The solutions of these equations are presented by means of elementary (harmonic, metaharmonic, and biharmonic) functions. On the basis of the gained results, we constructed an explicit solution of some basic BVPs for an ellipse in the form of absolutely uniformly convergent series.

ON IMPLEMENTATION AND PERFORMANCE OF AN ANISOTROPIC CONSTITUTIVE MODEL FOR CLAYS

2014 ◽  
Vol 11 (02) ◽  
pp. 1342009 ◽  
Author(s):  
MAJID T. MANZARI ◽  
KARMA YONTEN
Keyword(s):  
Constitutive Model ◽  
Pore Pressure ◽  
Field Measurements ◽  
Ground Settlement ◽  
Element Analysis ◽  
Foundation Soil ◽  
And Performance ◽  
Fully Coupled ◽  
Anisotropic Constitutive Model

Numerical implementation of an anisotropic constitutive model for clays (SANICLAY) is presented. Moreover, a case study in which a soil embankment is placed on a K0-consolidated over-consolidated clay is analyzed by conducting an elastoplastic fully-coupled finite element analysis. It is shown that anisotropy has significant impact on the ground settlement caused by the placement of soil embankment and on the pore pressure generation and dissipation within the foundation soil. The simulations using SANICLAY favorably compare with the field measurements of ground settlement and pore pressure. The drawbacks of the use of an isotropic elastoplastic model (Cam Clay) are also demonstrated.

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