A5005387358- Textile materials and evaluations
- Numerical methods in engineering
- Rock Mechanics and Modeling
- Elasticity and Material Modeling
- Geotechnical Engineering and Underground Structures
- Thermoregulation and physiological responses
- Seismic Imaging and Inversion Techniques
- Rheology and Fluid Dynamics Studies
- Dam Engineering and Safety
- Fluid Dynamics Simulations and Interactions
- Cellular Mechanics and Interactions
- Optical Imaging and Spectroscopy Techniques
- Mechanical Behavior of Composites
- Thermoelastic and Magnetoelastic Phenomena
- Hydraulic Fracturing and Reservoir Analysis
- Skin Protection and Aging
- Optical Coherence Tomography Applications
- Nonlocal and gradient elasticity in micro/nano structures
- Electrical and Bioimpedance Tomography
- Geotechnical Engineering and Soil Mechanics
- Advancements in Transdermal Drug Delivery
- Lattice Boltzmann Simulation Studies
- Clay minerals and soil interactions
- Blood properties and coagulation
- Grouting, Rheology, and Soil Mechanics
École Nationale d'Ingénieurs de Saint-Étienne
2000-2024
École Centrale de Lyon
2023-2024
École Nationale des Travaux Publics de l'État
2023-2024
Université Claude Bernard Lyon 1
2013-2024
Centre National de la Recherche Scientifique
2000-2024
Laboratoire de Tribologie et Dynamique des Systèmes
2005-2023
Université de Montpellier
1995-2020
École Nationale Supérieure de Chimie de Montpellier
2020
Institut des Sciences de la Terre
1996
Abstract Discrete and smeared crack models for concrete fracture are discussed in a historical perspective. It is argued that these two computational approaches, originally conceived as very different, can be brought together by exploiting the partition‐of‐unity property of finite element shape functions. The cohesive segments method, which exploits this property, exhibits advantages both discrete capable describing transition from distributed micro‐cracking to dominant crack. versatility...
Abstract A two‐scale numerical model is developed for fluid flow in fractured, deforming porous media. At the microscale cavity of a fracture modelled as viscous fluid. From micromechanics cavity, coupling equations are derived momentum and mass couplings to fluid‐saturated medium, which assumed hold on macroscopic scale. The finite element this approach integrated over time. By exploiting partition‐of‐unity property shape functions, position direction fractures independent from underlying...
A two-scale model is developed for fluid flow in a deforming, unsaturated and progressively fracturing porous medium. At the microscale, cohesive crack modelled using Darcy's relation medium, taking into account changes permeability due to progressive damage evolution inside zone. From micromechanics of cavity, identities are derived that couple local momentum mass balances governing equations an which assumed hold on macroscopic scale. The finite element this approach integrated over time....
Abstract The first part of this manuscript discusses a finite element method that captures arbitrary discontinuities in two‐phase medium by exploiting the partition‐of‐unity property shape functions. fluid flow away from discontinuity is modelled standard fashion using Darcy's relation, and at discrete analogy relation used. Subsequently, dynamic shear banding studied numerically for biaxial, plane‐strain specimen. A Tresca‐like as well Coulomb criterion used nucleation criterion. Decohesion...
Knowing the evolution of skin’s response to mechanical solicitations and understanding its origin is important in medicine, surgery, cosmetics. Studies performed vitro ex vivo show that links exist between topographic skin properties collagen elastin fibers network dermis. But, our knowledge, no study shows this link. In we propose a combination experimental tests demonstrate link dermis vivo. The first method consists analyzing relief images. second uses recently developed imaging technique...
This paper proposes a triphasic model of intact skin in vivo based on general phenomenological thermohydromechanical and physicochemical (THMPC) approach heterogeneous media. The is seen here as deforming stratified medium composed four layers made out different fluid-saturated materials which contain also an ionic component. All the are treated linear, isotropic described by their own behaviour law. numerical simulations indentation test performed human given. results correlate reasonably...
This contribution presents a new investigation to identify the viscoelastic parameters of soft biological materials using indentation test. The purpose is present independent method on experimental specificities in order characterize these materials. identification was done inverse analysis based combining finite element (FE) numerical simulations and tests. By considering tissues as an isotropic linear material, we firstly validate our proposed FE model via comparison between analytic...
"Comparison of different viscoelastic models for the characterisation mechanical properties human skin in vivo by indentation test." Computer Methods Biomechanics and Biomedical Engineering, 17(sup1), pp. 22–23Keywords:: biomechanicsporous mediafluid flowhuman skintransport ionsviscoelastic material
A derivation is given of two-scale models that are able to describe deformation and flow in a fluid-saturated progressively fracturing porous medium. From the micromechanics cavity, identities derived couple local momentum mass balances governing equations for medium, which assumed hold on macroscopic scale. By exploiting partition-of-unity property finite element shape functions, position direction fractures independent from underlying discretization. The this approach integrated over time....
Click to increase image sizeClick decrease sizeKeywords:: biomechanicsporous mediafluid flowhuman skintransport of ions
Natural skin tension plays an important role during surgical procedures and the healing process. Existing studies performed ex vivo give only a qualitative map of tension. In this study, we propose quantitative characterization in using new model. This model consists calculating indices based on equilibrium equation, uses Fourier transform. The study was carried out 42 volunteers. Tension are calculated primarily from topology images seven body areas: forearm, thigh, cheek, belly, upper...