Results 211 to 220 of about 24,682 (265)
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Dynamic Behavior of Damaged Brittle Solids
ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 1999AbstractThe macroscopic dynamic behavior of damaged brittle solids is investigated. Special attention is devoted to the analysis of wave attenuation and dispersion in micro‐cracked solids. Several methods are discussed and numerical examples are presented, to show the dependence of the wave attenuation coefficient and the effective wave velocity in ...
Zhang, Ch., Gross, D.
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Progressive Damage in Quasi-brittle Solids
2020We present a model of material degradation relying upon a local damage law supplemented by convex constraints. This results in a damage model with bounded variation that is shown to share the same features of the so-called Thick Level Set approach. Unlike the original model, in the present formulation the level set-based representation is abandoned in ...
Valoroso N., Stolz C.
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Validating Theories for Brittle Damage
Metallurgical and Materials Transactions A, 2007Validating simulated predictions of internal damage within armor ceramics is preferable to simply assessing a model’s ability to predict penetration depth, especially if one hopes to perform subsequent “second strike” analyses. We present the results of a study in which crack networks are seeded by using a statistically perturbed strength, the median ...
Rebecca M. Brannon +2 more
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On the nonlocal computational modelling of damage in brittle and quasi-brittle materials
2020 24th International Conference on Circuits, Systems, Communications and Computers (CSCC), 2020Computational prediction of progressive micro-cracking, observed namely in brittle and quasi-brittle materials, resulting in their softening behaviour, needs some regularization approach. Its social relevance increases with the massive application of steel fibre-reinforced concrete and similar composites in buildings and engineering structures. However,
Jiri Vala +2 more
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Damage-Resistant Brittle Coatings
Advanced Engineering Materials, 2000Laminate structures consisting of hard, brittle coatings andsoft, tough substrates are important in a wide variety of engi-neering applications (cutting tools, electronic multilayers, la-minated windscreens), biological structures (teeth and dentalcrowns, shells, bones), and traditional pottery (ceramicglazes).
Lawn, BR +7 more
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GRADIENT ENHANCED DAMAGE FOR QUASI-BRITTLE MATERIALS
International Journal for Numerical Methods in Engineering, 1996Summary: Conventional continuum damage descriptions of material degeneration suffer from loss of well-posedness beyond a certain level of accumulated damage. As a consequence, numerical solutions are obtained which are unacceptable from a physical point of view.
Peerlings, R.H.J. +3 more
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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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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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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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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.
openaire +1 more source