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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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Modeling 3D crack propagation in unreinforced concrete ...

Jul 01, 2005  A crack-propagation model and the used assumptions for the constitutive models are briefly introduced. All examples model the brittle failure of unreinforced concrete. The presented computations are performed on a PC with a PENTIUM 4 processor and 1.0 Gb RAM.

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Modelling of dynamic crack propagation on concrete matrix ...

Jan 01, 2018  Abstract. This paper is focused on the formulation of a numerical model for dynamic crack propagation on concrete aggregate interface. The concept of energy release rate is incorporated in the algorithm that is conducted in Abaqus through Python script interface. The proposed model is capable of manipulating free propagation of interface cracks.

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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 pioneering works by Dugdale [15] and Barrenblatt [5] for elasto-plastic fracture in metals, and Hillerborg et al. [22] for quasi-brittle failure of concrete materials and introduce a ...

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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

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, Alaleh Kamgar 4, and Nima Farzadnia 5 1 Department of Civil Engineering, University Putra Malaysia, E-mail: [email protected] 2 Housing Research Center, University Putra Malaysia, E-mail:

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Modeling tensile crack propagation in concrete gravity ...

Mar 01, 2016  This work investigates tensile crack propagation in concrete gravity dams by using some recently developed numerical techniques (crack-path field and strain injection techniques) , , .The work carefully addresses aspects related to mesh independence, robustness and computational cost, which are the main issues in fracture modeling.

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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 elements may be introduced into the mesh. The reinforcement, which may consist of several adjacent bars with different diameters, is modelled by a layer of 4-noded quadrilateral elements with a height equal to the average of diameters ...

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Computational Modelling of Concrete Structures ...

Feb 07, 2018  8%  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. Gal, E. Schlangen G. Ye

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Numerical modeling of discrete crack propagation in ...

10%  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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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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2D Crack Propagation in High-Strength Concrete Using ...

Sep 14, 2020  The advent of modern computer machines led to the development of sophisticated computer techniques that admit the statistical computational design of heterogeneous composite materials ... 3D concurrent multiscale model for crack propagation in concrete. Comput. Methods Appl. Mech. Eng. 361, 112813 (2020)

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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 in terms of a multi-level system.

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

"Application of Generalized J Integral to Crack Propagation Modeling of Asphalt Concrete under Repeated Loading." Hyunjong Lee. Download PDF ... 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 under Repeated Loading ...

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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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Computational Modelling of Concrete Structures ...

Feb 07, 2018  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. Gal, E. Schlangen G. Ye

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Modeling of Shear Crack Propagation in Rock Masses Using ...

Mar 25, 2021  The modeling of shear cracks in materials is critical in various engineering applications, such as the safety analysis of concrete structures and stability analysis of rock slopes. Based on the idea of Goodman element, the elastic-plastic constitutive model of the shear cracks is derived, and the elastic-plastic analysis of shear crack propagation is realized in the local radial basis point ...

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Modeling of Crack Initiation, Propagation and Coalescence ...

The following aspects are studied for both open and closed fractures: 1) crack initiation stress; 2) direction and propagation of the new cracks; 3) type of coalescence and stress at which it occurs. Modeling is done considering the actual size of the specimens. Relations between the direction of initiation for each type of crack, the ...

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Non-Destructive Evaluation of Crack Initiation and ...

Mar 05, 2019  Non-Destructive Evaluation of Crack Initiation and Propagation in Continuously Reinforced Concrete Pavements Show all authors. ... Because of the difficulties in detecting incipient cracks in concrete slabs, the effect that such cracks may have on CRCP performance is not currently considered. ... Computer-Aided Civil and Infrastructure Engineering.

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The Deformation Mechanisms in Process of Crack Propagation ...

Jun 14, 2016  After loading was done, the T-S curves of the two models in all the judgement areas defined in Figure 3 were got, and the similarities and differences of all the T-S curves could be obtained, as shown below. The T-S curves of the 1st and 2nd areas (bottom of crack) are very similar.In both of the two areas, T-S curves show random status, and the atomic stress is relatively low.

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Crack growth equation - Wikipedia

For the Griffith-Irwin crack growth model or center crack of length in an infinite sheet as shown in the figure 2, we have = and is independent of the crack length. Also, can be considered to be independent of the crack length. By assuming =, the above integral simplifies to = (), by integrating the above expression for and = cases, the total number of load cycles are given by

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Simulating 3D crack propagation with XFEM to investigate ...

a computational model to simulate the formation and propagation of cracks within the micro-structure is developed. The geometrical model for the computation and simulation of the micro-structure is extracted by means of computer tomography (CT) scans of concrete samples.

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Numerical modeling of discrete crack propagation in ...

Numerical modeling of discrete crack propagation in reinforced and plain concrete. 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 ...

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Publications Cornell Fracture Group

Finite and Boundary Element Modelling of Crack Propagation in Two- and Three – Dimensions Using Interactive Computer Graphics January, 1986. Walter H. Gerstle. Modeling Mixed – Mode Dynamic Crack Propagation Using Finite Elements January, 1986. Daniel V. Swenson

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Simulating 3D crack propagation with XFEM to investigate ...

a computational model to simulate the formation and propagation of cracks within the micro-structure is developed. The geometrical model for the computation and simulation of the micro-structure is extracted by means of computer tomography (CT) scans of concrete samples.

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(PDF) Simulation of crack propagation in asphalt concrete ...

Simulation of crack propagation in asphalt concrete using an intrinsic cohesive zone model. Journal of engineering mechanics, 2006. Glaucio H. Paulino. Download PDF. ... Remember me on this computer. or reset password.

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Numerical modeling of discrete crack propagation in ...

Numerical modeling of discrete crack propagation in reinforced and plain concrete. 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 ...

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Modeling of Shear Crack Propagation in Rock Masses Using ...

Mar 25, 2021  The modeling of shear cracks in materials is critical in various engineering applications, such as the safety analysis of concrete structures and stability analysis of rock slopes. Based on the idea of Goodman element, the elastic-plastic constitutive model of the shear cracks is derived, and the elastic-plastic analysis of shear crack propagation is realized in the local radial basis point ...

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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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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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Experimental Study on Crack Propagation of Concrete Under ...

May 07, 2020  The quantificational exploration of the propagation law of fracture process zone (FPZ) is of great importance to the research on concrete fracture. This paper performed fracture experiments on pre-cracked concrete beams under various loading rates. Digital image correlation (DIC) method was applied to obtain the whole field displacement of concrete in the fracture test. The crack opening ...

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Crack Propagation and Local Failure Simulation of ...

Oct 18, 2016  User Tools. Cart . Sign In

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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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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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An XFEM-Based Analysis of Concrete Face Cracking in ...

Based on the cracks on the concrete face in the numerical model, the propagation and evolution of cracks are studied, including stress concentration, crack initiation, and crack propagation. The effects of concrete cover thickness and reinforcement layers on the stress intensity of crack tips are also discussed with the established numerical model.

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(PDF) BOUNDARY ELEMENTS MODELING OF PLAIN CONCRETE

BOUNDARY ELEMENTS MODELING OF PLAIN CONCRETE NOTCHED BEAMS BY MEANS OF CRACK PROPAGATION FORMULA. Gospodin Gospodinov. Download PDF. Download Full PDF Package. This paper. ... Remember me on this computer. or reset password.

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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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"A Fatigue Crack Propagation Model of Asphalt Concrete ...

"A Fatigue Crack Propagation Model of Asphalt Concrete Based on Viscoelastic Fracture Mechanics." Hyunjong Lee. Related Papers. Replication-associated strand asymmetries in vertebrate genomes and implications for replicon size, DNA replication origin, and termination ... Computer

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