Numerical Simulation of Brittle Damage in Concrete Specimens

Labadi, Y.; Hannachi, Naceur Eddine

doi:10.1007/s11223-005-0039-5

Cited by 8 publications

(2 citation statements)

References 17 publications

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“…5. Several formulations are available in the literature which relate strain/stress to the damage parameter [44][45][46][47][48]. The approach used in this paper is described in the following paragraphs.…”

Section: Damage Accumulationmentioning

confidence: 99%

Numerical simulation of cementitious materials degradation under external sulfate attack

Sarkar

Mahadevan

Meeussen

et al. 2010

Cement and Concrete Composites

186

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a b s t r a c tA numerical methodology is proposed in this paper to simulate the degradation of cementitious materials under external sulfate attack. The methodology includes diffusion of ions in and out of the structure, chemical reactions which lead to dissolution and precipitation of solids, and mechanical damage accumulation using a continuum damage mechanics approach. Diffusion of ions is assumed to occur under a concentration gradient as well as under a chemical activity gradient. Chemical reactions are assumed to occur under a local equilibrium condition which is considered to be valid for diffusion controlled reaction mechanisms. A macro-scale representation of mechanical damage is used in this model which reflects the cracking state of the structure. The mechanical and diffusion properties are modified at each time step based on the accumulated damage. The model is calibrated and validated using experimental results obtained from the literature. The usefulness of the model in evaluating the mineralogical evolution and mechanical deterioration of the structure is demonstrated.

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Section: Damage Accumulationmentioning

confidence: 99%

Numerical simulation of cementitious materials degradation under external sulfate attack

Sarkar

Mahadevan

Meeussen

et al. 2010

Cement and Concrete Composites

186

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“…The model is capable of representing the opening and closing of cracks using element properties such as the compressive and tensile strength, and fracture energy. Some researchers such as Gunn [13], Valliappan et al [14], Sumarac et al [15], Labadi and Hannachi [16], Contrafatto and Cuomo [17], Grassl and Jirasek [18], Khan et al [19] and Mirzabozorg et al [20], applied damage mechanics to study behaviour of concrete. Also, Ardakanian et al [21] considered nonlinear seismic behaviour of mass concrete in 3D analysis based on an anisotropic damage mechanics model.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of various smeared crack models for concrete dams

Lakušić¹

2019

JCE

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Comparative study of various smeared crack models for concrete dams The nonlinear seismic response of concrete gravity dams is investigated in the paper. Nonlinear fracture mechanics based on three smeared crack models is used for comparative study of the cracking profile and dam response. Using the finite element method, the dynamic equation is solved by means of the modified Newton-Raphson method and Bosak's time integration algorithm. The effects of crack models on seismic response of Pine Flat Dam are discussed. The results reveal some differences in principal stress, dam crest displacement, and in the number and shape of cracks.

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