Journal ArticleDOI
Mesoscale finite element prediction of concrete failure
TLDR
In this article, the failure of concrete from a mesoscopic point of view was studied using the Delaunay triangulation technique and the effects of mesostructural features such as aggregate grading curve, aggregate volumetric share, and more importantly the controlling parameters of mortar's damage-plasticity constitutive model have been investigated.About:
This article is published in Computational Materials Science.The article was published on 2011-05-01. It has received 84 citations till now. The article focuses on the topics: Mortar & Linear elasticity.read more
Citations
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Random aggregate model for mesoscopic structures and mechanical analysis of fully-graded concrete
TL;DR: In this paper, a mesostructure model of 3-phase fully-grained concrete composed of anisotropic high-contented aggregates, cement paste, and interfaces bonding between them is presented.
Journal ArticleDOI
Modelling of concrete behaviour in uniaxial compression and tension with DEM
Michał Nitka,Jacek Tejchman +1 more
TL;DR: In this article, the authors focus on the DEM modeling of the behavior of plain concrete during uniaxial compression and tension using the discrete element method, taking into account the concrete heterogeneity at the meso-scale level.
Journal ArticleDOI
Modelling of concrete fracture at aggregate level using FEM and DEM based on X-ray μCT images of internal structure
TL;DR: In this article, the authors describe two-dimensional meso-scale numerical results of fracture in notched concrete beams under quasi-static three-point bending, where concrete was modelled as a random heterogeneous 4-phase material composed of aggregate, cement matrix, interfacial transitional zones (ITZs) and air voids.
Journal ArticleDOI
A three-dimensional meso-scale approach to concrete fracture based on combined DEM with X-ray μCT images
Michał Nitka,Jacek Tejchman +1 more
TL;DR: In this article, a 3D numerical mesoscopic results on progressive concrete fracture at aggregate level in a notched concrete beam under bending were presented, where a classical particle discrete element method was used to capture fracture in concrete.
Journal ArticleDOI
Mesoscale modelling of concrete – A review of geometry generation, placing algorithms, constitutive relations and applications
TL;DR: Presenting the state-of-the-art developments in mesoscale modelling of concrete considering different analysis methods such as continuum Finite Element Modelling (FEM), Lattice Element Method (LEM), Rigid Body Spring Method (RBSM), Discrete Element method (DEM) and Lattices Discrete Particle Method (LDPM) is the focus of this review paper.
References
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Journal ArticleDOI
A plastic-damage model for concrete
TL;DR: In this article, a constitutive model based on an internal variable-formulation of plasticity theory for the non-linear analysis of concrete is presented, which uses a new yield criterion which matches experimental data quite well and it accounts for both elastic and plastic stiffness degradations effects.
Journal ArticleDOI
Plastic-Damage Model for Cyclic Loading of Concrete Structures
Jeeho Lee,Gregory L. Fenves +1 more
TL;DR: In this paper, a new plastic-damage model for concrete subjected to cyclic loading is developed using the concepts of fracture-energy-based damage and stiffness degradation in continuum damage mechanics.
Book
Metal Foams: A Design Guide
Michael F. Ashby,Anthony G. Evans,Norman A. Fleck,Lorna J. Gibson,John W. Hutchinson,Hng Wadley,Feridun Delale +6 more
TL;DR: In this paper, the authors present a model for making metal foams characterisation methods and properties of metal foam, and a constitutive model for metal foam design for Creep with Metal Foams Sandwich Structures Energy Management: Packaging and Blast Protection Sound Absorption and Vibration Suppression Thermal Management and Heat Transfer Electrical Properties of metal Foams Cutting, Finishing and Joining Cost Estimation and Viability Case Studies Suppliers of Metal Foam Web Sites Index
Book
Plasticity for Structural Engineers
Wai-Fah Chen,Da-Jian Han +1 more
TL;DR: In this article, the authors present a practical work that provides engineers and students in structural engineering or structural mechanics with the background needed to make the transition from fundamental theory to computer implementation and engineering practice.
Journal ArticleDOI
Mesoscale models for concrete: homogenisation and damage behaviour
Peter Wriggers,S. O. Moftah +1 more
TL;DR: In this paper, three-dimensional geometrical models for concrete are generated taking the random structure of aggregates at the mesoscopic level into consideration, where the aggregate particles are generated from a certain aggregate size distribution and then placed into the concrete specimen in such a way that there is no intersection between the particles.
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Mesoscale models for concrete: homogenisation and damage behaviour
Peter Wriggers,S. O. Moftah +1 more