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2011
Besides ductile materials considered hitherto, a variety of brittle materials, like concrete, rocks and ceramics, are widely employed in engineering practice. Their mechanical behavior can not be described by the elastic-plastic damage theory or by the viscoplastic damage theory discussed already.
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Besides ductile materials considered hitherto, a variety of brittle materials, like concrete, rocks and ceramics, are widely employed in engineering practice. Their mechanical behavior can not be described by the elastic-plastic damage theory or by the viscoplastic damage theory discussed already.
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Friction-damage coupled model for brittle materials
Engineering Fracture Mechanics, 2004By considering a tensorial description of the damage and of the unilateral and frictional effects on the displacement jump across the crack faces, an anisotropic constitutive model based on the assumption of linear elastic matrix weakened by microcraks is derived.
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A Variational View of Partial Brittle Damage Evolution
Archive for Rational Mechanics and Analysis, 2006zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Francfort, Gilles A., Garroni, Adriana
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A theory of damage in brittle materials
Engineering Fracture Mechanics, 1990Abstract The present paper addresses the geometric representation of damage in brittle solids, its equation of evolution and its incorporation in the constitutive equation. The concept of a damage coordinate is introduced and a thermodynamic derivation of the evolution equation follows. A continuum damage theory ensues.
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Numerical Simulation of Brittle Damage in Concrete Specimens
Strength of Materials, 2005A framework for damage mechanics of concrete is applied to simulate the nonlinear elastic deformation behavior of concrete using finite element method (FEM). A rather simple isotropic damage model containing essentially no adjustable parameters is shown to produce results in remarkably good agreement with sample experimental data: the damage law ...
Labadi, Y., Hannachi, N.E.
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Constitutive Inequalities for the Damage of Elastic-Brittle Materials
Materials Science Forum, 2011Starting from the requirement that the principle of determinism be satisfied, two constitutive inequalities are derived for one-dimensional strain- and stress-based continuum damage models. The one-dimensional constitutive inequality corresponding to the strain-based formulation turns out to be much less restrictive than the one associated to the ...
He, Qi-Chang, Zhou, J.Z.
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Micromechanics of Damage in Brittle Solids
2003This chapter deals with microcrack damage models of brittle deformation in rocklike solids under quasi-static loading. Starting with basic mechanisms of microcrack growth under tension and compression, non-linear stress-strain relationships are derived within the thermodynamic framework with microstructural internal variables. Illustrative examples are
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Dynamic damage evolution in brittle solids
Mechanics of Materials, 1992Abstract For brittle solids containing preexisting microflaws, a two-dimensional model is developed to simulate dynamic damage evolution in uniaxial compression. Frictional, and rate-dependent and rate-independent plastic constitutive relations are considered to describe the deformation of preexisting microflaws.
H. Deng, S. Nemat-Nasser
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A microcrack damage model for brittle materials
International Journal of Solids and Structures, 1993Abstract A damage model for brittle materials subject to arbitrary stress is developed. By considering dilute distributions of flat microcracks, self-similarly propagating in a linear elastic matrix, constitutive equations are obtained taking into account both stress- and damage-induced anisotropy.
GAMBAROTTA, LUIGI, LAGOMARSINO, SERGIO
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The nature of machining damage in brittle materials
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1983Abstract The micromechanics of failure emanating from machining-induced cracks in brittle materials is investigated. In situ monitoring of crack response during breaking tests (with use of acoustic wave scattering), strength measurements and post-failure fractography all indicate that the crack response is dominated by residual ...
D. B. Marshall +4 more
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