Numerical modelling of reinforced geomaterials by wires using the non smooth contact dynamics

Laniel, Romain; Mouraille, O.J.P.; Pagano, Stéphane; Dubois, Frédéric; Alart, Pierre

doi:10.1007/3-540-31761-9_32

Cited by 4 publications

(4 citation statements)

References 2 publications

(3 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…But the coupling in the same model of a granular model for the sand and a continuum one for the wire imposes an unwieldy finite element discretisation of the wire. In [13], we opt directly for a discrete model of wire as "chain of pearls": every pearl is connected to the other ones by a bilateral link or a spring and is in frictional contact with the nearby grains.…”

Section: Discrete-to-continuum Approachesmentioning

confidence: 99%

A scalable multiscale LATIN method adapted to nonsmooth discrete media

Alart¹,

Dureisseix²

2008

Computer Methods in Applied Mechanics and Engineering

View full text Add to dashboard Cite

The simulation of discrete systems often leads to large scale problems, for instance if they result of a discretization technique, or a modeling at a small scale.A multiscale analysis may involve an homogenized macroscopic problem, as well as a coarse space mechanism to accelerate convergence of the numerical scheme. A multilevel domain decomposition technique is used herein as both a numerical strategy to simulate the behaviour of a non smooth discrete media, and to provide a macroscopic numerical behaviour of the same system. Several generic formulations for such systems are discussed in this article. A multilevel domain decomposition is tested and several choices of the embedded coarse space are discussed, in particular with respect of the emergence of weak interfaces, characteristics of the discrete media substructuration. The application problem is the quasi-static simulation of a large scale tensegrity grid.

show abstract

Section: Discrete-to-continuum Approachesmentioning

confidence: 99%

A scalable multiscale LATIN method adapted to nonsmooth discrete media

Alart¹,

Dureisseix²

2008

Computer Methods in Applied Mechanics and Engineering

View full text Add to dashboard Cite

show abstract

“…Moreover, we can define such a tensor grain by grain with the approach of Moreau (Moreau, 1999). In this way, a wire network stress and a sand stress may be computed, to retrieve by addition the full TexSol stress (in the discrete simulation, the wire is modeled by a chain of beads with unilateral interactions (Laniel and al., 2005)). In a biaxial test (deviatoric load on a confined material) computed with LMGC90 using the Non Smooth Contact Dynamics method (Dubois and Jean, 2003), (Jean, 1999), we check the symmetry of the stress tensor even at large strains as long as the process remains slow (no inertial effects).…”

Section: Stress Additivity Assumptionmentioning

confidence: 99%

Consistent thermodynamic modelling of wire-reinforced geomaterials

Laniel

Alart

Pagano

2007

European Journal of Mechanics - A/Solids

Self Cite

View full text Add to dashboard Cite

International audienceThe TexSol is a composite geomaterial: a sand matrix with a wire network reinforcement. For small strains a thermodynamic continuous model of the TexSol including the unilaterality of the wire network is postulated. This model is described by two potentials which depend on some internal variables and a state variable either strain or stress tensor (the choice of this last one gives two different ways of identification). The TexSol continuous model is implemented in a finite element code to retrieve the mechanical behaviour given by discrete element numerical experiments

show abstract

“…They can be rigid or elastic and at the same time, unilateral or bilateral. Indeed, we showed in [8] that bilateral wire interactions give unrealistic phenomena. The only two unilateral interactions are:…”

Section: Texsol Discrete Modelmentioning

confidence: 97%

From discrete to continuous numerical identification of a geomaterial with an internal length

Laniel¹,

Alart

Pagano

2009

Computer Methods in Applied Mechanics and Engineering

View full text Add to dashboard Cite

To cite this version:Romain Laniel, Pierre Alart, Stéphane Pagano. From discrete to continuous numerical identification of a geomaterial with an internal length. Computer Methods in Applied Mechanics and Engineering, Elsevier, 2009, 199 (1-4) Investigations by discrete elements highlighted that the characteristic length was dependant on the loading level. These simulations provided access to variables that standard physical experiments cannot provide. Some parameters of a continuous model of TexSol were identified through discrete numerical experiments using a classic procedure. The other parameters were determined by finite element method updating.

show abstract

Numerical modelling of reinforced geomaterials by wires using the non smooth contact dynamics

Cited by 4 publications

References 2 publications

A scalable multiscale LATIN method adapted to nonsmooth discrete media

A scalable multiscale LATIN method adapted to nonsmooth discrete media

Consistent thermodynamic modelling of wire-reinforced geomaterials

From discrete to continuous numerical identification of a geomaterial with an internal length

Contact Info

Product

Resources

About