Consulta: subjectFacets:"Swelling"
Registros recuperados: 2
Data/hora: 01/06/2024 10:10:42

Biaxial testing of canine annulus fibrosus tissue under changing salt concentrations
Provedor de dados: 42
Autores: Huyghe,Jacques M.
The in vivo mechanics of the annulus fibrosus of the intervertebral disc is one of biaxial rather than uniaxial loading. The material properties of the annulus are intimately linked to the osmolarity in the tissue. This paper presents biaxial relaxation experiments of canine annulus fibrosus tissue under stepwise changes of external salt concentration. The force tracings show that stresses are strongly dependent on time, salt concentration and orientation. The force tracing signature of are sponse to a change instrain, is one of a jumpin stress that relaxes partly as the new strain is maintained. The force tracing signature of a stepwise change in salt concentration is a progressive monotonous change in stress towards a new equilibrium value. Although the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Swelling; Collagen; Osmosis; Donnan; Cartilaginous.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000100012

Estimating vertical and lateral pressures in periodically structured montmorillonite clay particles
Provedor de dados: 42
Autores: Narsilio,Guillermo A.; Smith,David W.; Pivonka,Peter.
Given a montmorillonitic clay soil at high porosity and saturated by monovalent counterions, we investigate the particle level responses of the clay to different external loadings. As analytical solutions are not possible for complex arrangements of particles, we employ computational micromechanical models (based on the solution of the Poisson-Nernst-Planck equations) using the finite element method, to estimate counterion and electrical potential distributions for particles at various angles and distances from one another. We then calculate the disjoining pressures using the Van't Hoff relation and Maxwell stress tensor. As the distance between the clay particles decreases and double-layers overlap, the concentration of counterions in the micropores among...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Clay; Maxwell tensor; Poisson-Nernst-Planck equation; Pore-scale; Swelling; Van't Hoff law.
Ano: 2010
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652010000100003