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Computer modeling of crack propagation in concrete

Computer modeling of crack propagation in concrete

Computer Modeling of Crack-Propagation in Concrete ...

Computer modeling of crack propagation in concrete retaining walls: A case study Mehdi Azarafza 1 , Mohammad-Reza Feizi-Derakhshi 1 and Mohammad Azarafza 2

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Extended Finite Element Modeling of Crack Propagation in ...

TRT Terms: Asphalt concrete pavements; Thermal fatigue Identifier Terms: ABAQUS (Computer program) Uncontrolled Terms: Crack length ; Crack propagation ;

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Modeling 3D crack propagation in unreinforced concrete ...

Modeling 3D crack propagation in unreinforced concrete using PUFEM. ... In order to model concrete failure in terms of strong discontinuities, we follow the

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A SIMPLE METHOD TO MODEL CRACK PROPAGATION IN

216758 ,, – No. 1 / 2012 41 A SIMPLE METHOD TO MODEL CRACK PROPAGATION IN CONCRETE Shahriar Shabazpanahi1, Abang Abdullah Abang Ali 2, Farah Nora Aznieta 3

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Modelling crack propagation in reinforced concrete using a ...

Jan 01, 2011  2.1. Reinforcement and concrete bulk. In Ω FEM, the concrete bulk is modelled using 4-noded quadrilateral elements.During crack propagation, 3-noded triangular

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Simulation of Crack Propagation in Concrete Beams with ...

Jan 01, 2010  This paper discusses the simulation of crack propagation in concrete beam specimens with a finite element package, ABAQUS, version 6.7-1. Special-purpose cohesive

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Simulation of crack propagation and failure of concrete

Simulation of crack propagation and failure of concrete Y. B. Zaitsev (~), F. H. Wittmann (2) First of all the heterogeneous structure of concrete is described

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Computational Modelling of Concrete Structures ...

An adaptive concurrent two-scale FE model to predicting crack propagation in concrete O.L. Manzoli, E.A. Rodrigues, L.A.G. Bitencourt Jr., T.N. Bittencourt M.

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Numerical modeling of discrete crack propagation in ...

Abstract. The earliest applications of the finite element method to concrete structures included crack modeling [1–3]. Such modeling, then and now, can be

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FINITE ELEMENT MODELLING OF MULTIPLE COHESIVE

beams, with the smeared crack model being far more popular because of its computational convenience [1]. Due to the necessity of a remeshing procedure to accommodate

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Extended Finite Element Modeling of Crack Propagation in ...

TRT Terms: Asphalt concrete pavements; Thermal fatigue Identifier Terms: ABAQUS (Computer program) Uncontrolled Terms: Crack length ; Crack propagation ; Crack spacing ;

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FEM Modeling of Fictitious Crack Propagation in Concrete ...

Feb 01, 1992  Using a mixed‐mode extension of the Hillerborg fictitious crack model, a practical interface finite element approach is used to model discrete crack propagation. The fictitious crack tip propagates perpendicular to the maximum tensile principal stress at its tip when the tensile strength is exceeded. A dynamic relaxation method is employed.

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(PDF) Simulation of crack propagation and failure of concrete

By using the derived formulae crack formation and failure of lightweight, normal, and high strength concrete are discussed. Computer experiments are described. It is shown that crack propagation ...

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Numerical modeling of discrete crack propagation in ...

Abstract. The earliest applications of the finite element method to concrete structures included crack modeling [1–3]. Such modeling, then and now, can be completely characterized by two essential elements. These are the manner of inclusion of a crack in the finite element mesh, and the criterion for crack instability and direction of growth.

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(PDF) "Application of Generalized J Integral to Crack ...

Remember me on this computer. ... to Crack Propagation Modeling of Asphalt Concrete under Repeated Loading." Hyunjong Lee. Download PDF. Download Full PDF Package. This paper. A short summary of this paper. 32 Full PDFs related to this paper. Read Paper "Application of Generalized J Integral to Crack Propagation Modeling of Asphalt Concrete ...

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Computational Modelling of Concrete Structures ...

An adaptive concurrent two-scale FE model to predicting crack propagation in concrete O.L. Manzoli, E.A. Rodrigues, L.A.G. Bitencourt Jr., T.N. Bittencourt M. Sánchez. Multi-scale modelling of the mechanics of concrete based on the cement paste properties G. Lifshitz Sherzer, E.

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CHAPTER 2: CONCRETE MATERIAL MODEL

ing is distributed over a continuous volume of the material. Such models include the ficti-tious-crack model [Hillerborg et al., 1976], smeared-crack models [de Borst and Nauta, 1984], and the crack-band model [Bazant and Oh, 1983]. Modeling of concrete as a con-tinuum results in a model that is compatible with many existing computer codes as ...

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CRACK PROPAGATION UNDER WATER PRESSURE

along cracks and joints create external forces that favour crack propagation in the dam body and affect the dynamic and post-seismic stability of cracked concrete components. Slowik and Saouma (2000) reported experimental results related to water pressurization of propagating cracks in concrete specimens in a dynamic wedge splitting test.

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Finite Element Modelling of Complex 3D Static and Dynamic ...

The objective was to identify the impetus for deep crack propagation and characteristic semi-elliptical shape. Finite element (FEM) and extended finite element (XFEM) models which included residual stress effects from service were used to analyze the thermo-mechanical history and resulting crack propagation.

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PFC simulation of crack evolution and energy conversion ...

In order to deal with the formation and propagation of cracks directly, each bond of this model is assumed to break. There are two forms of crack, shear crack and tensile crack. When the shear strength of bond is exceeded, a shear crack is found; while when the normal strength of bond is exceeded, a tensile crack results (see figure 3 ).

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Explicit finite element modeling of static crack ...

Oct 20, 2006  Explicit finite element modeling of static crack propagation in reinforced concrete. Rena C. Yu 1 Gonzalo Ruiz 1 International Journal of Fracture

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(PDF) Numerical modelling crack propagation under Mode II ...

Compact Shear Defects Numerical modelling Specimens (CSSs) – 150 150 150 concrete cube with two fictitious cracks were used for tests under Crack propagation quasi-static loading. Fracture processes A new 3-D numerical model for CSS used for experimental testing of the Mode II fracture was created Fracture toughness using XFEM.

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A Condition‐Based Deterioration Model for the Stochastic ...

A new statistical, data‐driven state‐dependent model is proposed. The construction of the degradation model will be discussed within an application to the cracking of concrete due to chloride‐induced corrosion. Numerical experiments will later be conducted to identify preliminary properties of the model in terms of statistical inferences.

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eXtended Finite Element Method (XFEM) in Abaqus

• Makes modeling of cracks easier and accurate • Allows crack to be modeled independent of the mesh • Allows simulation of initiation and propagation of a discrete crack along an arbitrary, solution-dependent D assault Systèmes discrete crack along an arbitrary, solution path without the

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FEM Modeling of Fictitious Crack Propagation in Concrete ...

Feb 01, 1992  Using a mixed‐mode extension of the Hillerborg fictitious crack model, a practical interface finite element approach is used to model discrete crack propagation. The fictitious crack tip propagates perpendicular to the maximum tensile principal stress at its tip when the tensile strength is exceeded. A dynamic relaxation method is employed.

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A SIMPLE METHOD TO MODEL CRACK PROPAGATION IN CONCRETE

Crack analysis is vital to explain behavior of concrete structures. In the present study, an interface element with softening spring is used to simulate cohesive zone model (CZM) in beam to accurately explain the propagation for mixedmode crack. Modified crack closure integral method is implemented to model propagation of fracture process zone (FPZ) and stress-free region.

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(PDF) 📄 Cell Method Analysis of Crack Propagation in ...

Cell Method Analysis of Crack Propagation in Tensioned Concrete Plates. ... where the crack propagation occurred in Mode I [43] [44] ... June 2008 Computer Modeling in Engineering and

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(PDF) Numerical modelling crack propagation under Mode II ...

Compact Shear Defects Numerical modelling Specimens (CSSs) – 150 150 150 concrete cube with two fictitious cracks were used for tests under Crack propagation quasi-static loading. Fracture processes A new 3-D numerical model for CSS used for experimental testing of the Mode II fracture was created Fracture toughness using XFEM.

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(PDF) ATENA simulation of crack propagation in CONCRACK ...

ATENA simulation of crack propagation in CONCRACK benchmark A crack propagation in concrete and reinforced concrete structures can be simulated by numerical models based on fracture mechanics. The cracks can be a result of load actions, or volume changes of material due to thermal and chemical processes, or combinations of both.

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Applicability of machine learning to a crack model in ...

This study applies machine learning to a regression model of crack formation and propagation using inspection data to confirm the applicability. It includes the selection of the optimal algorithm, development of the model based on a novel methodology, and factor analysis using the model.

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(PDF) STATIC MULTI-CRACKING MODELING OF LRC BEAMS

Figure 4 shows that the simulations get very accurately the mechanical response of the reinforced beam. REFERENCES [1] R.C. Yu and G. Ruiz. Static multi-crack modeling in concrete solved by a modified DR method. Computers and Concrete, 1(4):1–17, 2004. [2] G. Ruiz. Propagation of a cohesive crack crossing a reinforcement layer.

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1 (20) Fatigue crack propagation

Solid Mechanics Fatigue crack propagation Anders Ekberg 2 (20) Stress intensity factors and fracture In static loading, the stress intensity factor for a small crack in a large specimen can be expressed as Kf aI =(σ,) where f depends on geometry •If the stress is kept constant, we will get fracture for a certain crack length, a=aC, which will give KI=KIC.

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Numerical Fracture Analysis of Fiber‑Reinforced Concrete ...

The results show that the proposed model possesses high accuracy and numerical stability in simulating crack propagation of mode I, mode II and mixed-mode fractures. Read more Article

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eXtended Finite Element Method (XFEM) in Abaqus

• Makes modeling of cracks easier and accurate • Allows crack to be modeled independent of the mesh • Allows simulation of initiation and propagation of a discrete crack along an arbitrary, solution-dependent D assault Systèmes discrete crack along an arbitrary, solution path without the

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Particle Equilibrium Method for Crack Propagation Simulation

Crack propagation simulation is constantly of great significance. This study presents the particle equilibrium method (PEM) to achieve this goal. PEM is based on the idealization of the problem domain as an assemblage of distinct particles, which release interaction forces to their surrounding particles. Once the distance between two particles exceeds the extreme distance, a permanent crack ...

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Finite Element Modelling of Complex 3D Static and Dynamic ...

Jun 01, 2010  Gasser, T.C. and Holzapfel, G.A., 3D Crack propagation in unreinforced concrete: A two-step algorithm for tracking 3D crack paths. Computer Methods in Applied Mechanics and Engineering, 2006, 195: 5198–5219. MathSciNet Article Google Scholar [34] Rots,J.G., Computational Modelling of Concrete Fracture.

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Finite element modelling of multiple cohesive discrete ...

Yang, ZJ Chen, JF 2004, Finite element modelling of multiple cohesive discrete crack propagation in reinforced concrete beams (I): the model and its computer implementation. in The 15th European Conference of Fracture - Advanced Fracture Mechanics for Life and Safety Assessments (ECF15).

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Crack Detection of Reinforced Concrete Structures Based on ...

Sep 03, 2018  Reinforced concrete structural elements, as an important component of buildings and structures, require inspection for the purposes of crack detection which is an important part of structural health monitoring. Now existing crack detection methods usually use a single technology and can only detect internal or external cracks. In this paper, the authors propose a new sensing system combining ...

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