Étude thermodynamique de l'évolution sous chargement dynamique de structures délaminées

Pradeilles-Duval, R. M.

doi:10.1016/s1620-7742(01)01364-2

Cited by 2 publications

(2 citation statements)

References 2 publications

(2 reference statements)

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“…In this paper we propose to model the damage like the propagation of level set surface (Moës et al 2011). For elastic quasi-brittle material, the evolution of the interface separating the undamaged material d = 0from the damaged material d = 1 have been studied using an energetical description of the propagation (Pradeilles-Duval and Stolz 1991Stolz , 1995. In this description the parameter d jumps instantaneously from 0 to 1.…”

Section: Introductionmentioning

confidence: 99%

A new model of damage: a moving thick layer approach

Stolz¹,

Moës²

2012

Micromechanics of Defects in Solids

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A new formulation of a damage law is proposed based on a continuous transition between a sound material and a totally or partially broken material. The evolution of damage is then associated with a moving layer. This point of view permits the description of initiation and propagation of defects in an unified framework. The motion of the thick layer is defined in the frame of the moving surface Γ o separating the sound material and the damaged material. When the damage parameters are continuous functions of the distance to Γ o , they satisfy the conditions of transport. For particular geometries and loadings the evolution of the system is discussed. Comparison with description of damage with discontinuities and sharp interface is also presented.

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Section: Introductionmentioning

confidence: 99%

A new model of damage: a moving thick layer approach

Stolz¹,

Moës²

2012

Micromechanics of Defects in Solids

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“…This assumption is especially efficient to define the start of fracture. Another line of investigation considers the delamination as the propagation of a crack parallel to a plate or a shell which corresponds to the delaminated structure (Storakers and Anderson, 1988;Larson, 1991;Cochelin and Potier-Ferry, 1991;Pradeilles-Duval, 2001;Ousset, 1999). Analytical or numerical examples of propagation of delamination in such composite structures use various propagation criteria mainly based on energy criteria.…”

Section: Introductionmentioning

confidence: 99%

Quasi-static evolution of delaminated structures: analysis of stability and bifurcation

Duval

2004

International Journal of Solids and Structures

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Within the framework of dissipative systems with time-independent behavior, the study of the evolution of delaminated structures modeled by frames of plates is considered via a global energetic analysis. Assuming the current equilibrium state is known, the governing rate problem for the instantaneous delamination is formulated as either a system of local equations or as a global variational inequality.This global formulation enables to study stability and non-bifurcation of the evolution of a delaminated structure under quasi-static loading, corresponding to the statement of existence and uniqueness criteria for the rate solution.Two analytical applications to simple structures are presented.

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Étude thermodynamique de l'évolution sous chargement dynamique de structures délaminées

Cited by 2 publications

References 2 publications

A new model of damage: a moving thick layer approach

A new model of damage: a moving thick layer approach

Quasi-static evolution of delaminated structures: analysis of stability and bifurcation

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