Modelling anisotropic damage and permeability of mortar under dynamic loads

Chen, Wen; Maurel, Olivier; Reess, Thierry; Matallah, Mohammed; Ferron, A. De; Borderie, Christian La; Pijaudier‐Cabot, Gilles

doi:10.1080/19648189.2011.9693361

Cited by 10 publications

(6 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The electrical discharge and the propagation of pressure are simulated with a diphasic model developed at CEA (French Alternative Energies and Atomic Energy Commission) and detailed in Refs. . The electrical discharge is described by an increase of enthalpy of water in a small region between the electrodes.…”

Section: Numerical Simulationmentioning

confidence: 99%

“…In a first feasibility study , PAED‐induced compressive shock waves were used in order to induce damage on compression specimens. Then, a more realistic experimental study on hollow cylinders has been carried out . PAED was generated by placing electrodes inside cylinders, cored from concrete and sandstone blocks, and filled with water .…”

Section: Introductionmentioning

confidence: 99%

“…The principle of the 3‐D simulations, carried out with the finite element computer code europlexus are recalled in section 3, along with the experimental set‐up used in Ref. . Comparisons with experimental data are provided for several levels of confinements and amplitude of the dynamic waves.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Simulation of damage–permeability coupling for mortar under dynamic loads

Chen

Borderie

Maurel

et al. 2013

Num Anal Meth Geomechanics

Self Cite

View full text Add to dashboard Cite

International audienceThe results reported in this paper deal with the simulation of damage in cohesive geomaterials such as rocks or concrete subjected to dynamic loads. The practical objective is to stimulate the production of tight gas reservoirs with a technique that is an alternative to hydraulic fracturing. The principle is that when subjected to dynamic loads, cohesive materials such as concrete, rocks or ceramics exhibit distributed micro-cracking as opposed to localised cracking observed under static loads. Hence, a low permeability rock containing gas trapped into occluded pores can be fragmented with the help of dynamic loads, and gas can be extracted in a much more efficient way compared with hydraulic fracturing, where only large macro cracks are formed with very few connections between occluded pores. At the stage of laboratory development of this technique, compressive underwater shock waves have been used to increase the intrinsic permeability of concrete specimens. In a previous study, pressure waves generated by pulsed arc electrohydraulic discharges in water were used in order to induce micro-cracking and an increase of average permeability of concrete hollow cylinders subjected to confinement stresses (equivalent to geostatic stresses). We discuss here a 3-D anisotropic constitutive model aimed at describing the dynamic response of these specimens. It is based on rate-dependent continuum damage constitutive relations. Crack closure effects and damage-induced anisotropy are included in the model. The directional growth of damage is related to the directional growth of material intrinsic permeability. Numerical simulations of damage induced by shock waves show good agreement with the experiments for various confinement levels of the specimens. © 2013 John Wiley & Sons, Ltd

show abstract

Section: Numerical Simulationmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Simulation of damage–permeability coupling for mortar under dynamic loads

Chen

Borderie

Maurel

et al. 2013

Num Anal Meth Geomechanics

Self Cite

View full text Add to dashboard Cite

show abstract

“…The transition from a diffused degradation to a localized crack is still a challenge for CDM‐based models. Within the framework of CDM, various authors have proposed to relate the permeability evolution of the porous medium to the damage variable 13,14 or using two distinguished regimes, a diffused one where the permeability is related to the damage variable and a localized one related to the crack opening 15,16 . To overcome some limitation of damage‐based permeability laws, a new continuous strain‐based description of concrete's damage‐permeability coupling has been proposed in 17 .…”

Section: Introductionmentioning

confidence: 99%

A poromechanical‐damage‐based‐model for water‐driven fracture modeling of concrete gravity dams

Bessaid

Matallah

Rouissat

2021

Num Anal Meth Geomechanics

Self Cite

View full text Add to dashboard Cite

Water‐driven fracture propagation is a fundamental issue in the failure analysis of cracked concrete gravity dams. In the present paper, a poromechanical‐damage–based model is proposed to study the water‐fracture interaction in saturated porous media in order to highlight the importance of considering the presence of the pressurized water in propagating fractures. The solid behavior is described by a plastic damage model. The crack openings computation is performed using a post‐processing method combined with the fracture energy regularization concept. The hydraulic behavior is governed by Darcy's law for the un‐cracked material. After cracking, the flow through fracture is driven by the cubic law and the material permeability is increased as the crack propagates. The validations are performed on a wedge splitting test. The failure analysis of a concrete gravity dam under hydraulic fracturing shows that considering the water pressure in cracks leads to deeper and larger fracture propagation.

show abstract

“…Other tensorial damage representations exist in literature such as the thermodynamics damage variable of integrity tensor ( ¼ 1 À D, its invert ( À1 or even their square root ( 1 2 ¼ ð1 À DÞ 1 2 , ( À 1 2 ¼ ð1 À DÞ À 1 2 ¼ H (Badel et al, 2007;Chambart et al, 2014;Chen et al, 2011;Desmorat et al, 2010a,b;Ladeve`ze, 1983Ladeve`ze, , 1995Ladeve`ze et al, 1994;Menzel and Steinmann, 2001;Steinmann and Carol, 1998;Souid et al, 2009) as introduced in pioneering work of Cordebois and Sidoroff (1982). The tensorial damage evolution laws take different forms according to the authors, from _ ( ¼ Á Á Á 0 to _ H ¼ Á Á Á !…”

Section: Introductionmentioning

confidence: 99%

Anisotropic damage modeling of concrete materials

Desmorat

2015

International Journal of Damage Mechanics

View full text Add to dashboard Cite

An anisotropic damage model is proposed for concrete materials. As required by thermodynamics a single damage variable, tensorial, is considered for any loading: as a state variable it represents the microcracking pattern whatever the loading sign. Damage anisotropy is used to model the strong dissymmetry tension/compression.The Ladevèze damage variable H ¼ (1 À D) À1/2 is introduced within a deviatoric/ hydrostatic split. An original shear-bulk coupling is derived, in accordance with numerical discrete element computations. The sought property of gradual stress softening, with a tail in stress-strain diagram, is obtained. Stress triaxiality is used to enhance the performance of Mazars criterion and therefore of the full anisotropic damage model in bicompression.

show abstract

Modelling anisotropic damage and permeability of mortar under dynamic loads

Abstract: de Ferron, et al.. Modelling anisotropic damage and permeability of mortar under dynamic loads.

Cited by 10 publications

References 17 publications

Simulation of damage–permeability coupling for mortar under dynamic loads

Simulation of damage–permeability coupling for mortar under dynamic loads

A poromechanical‐damage‐based‐model for water‐driven fracture modeling of concrete gravity dams

Anisotropic damage modeling of concrete materials

Contact Info

Product

Resources

About