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Concrete Fracture Models and Applications
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eng
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335995985 Buchausg. u.d.T.: ‡Kumar, Shailendra, 1958 - : Concrete fracture models and applications
ISBN
978-3-642-16763-8
Name
Kumar, Shailendra
Barai, Sudhirkumar V.
Name ANZEIGE DER KETTE
Barai, Sudhirkumar V.
T I T E L
Concrete Fracture Models and Applications
Verlagsort
Berlin, Heidelberg
Verlag
Springer -Verlag Berlin Heidelberg
Erscheinungsjahr
2011
2011
Umfang
Online-Ressource (XXVI, 406p. 187 illus, digital)
Reihe
SpringerLink. Bücher
Notiz / Fußnoten
Includes bibliographical references and index
Weiterer Inhalt
Foreword; Preface; Acknowledgement; Contents; List of Symbols and Abbreviations; 1 Introduction to Fracture Mechanics of Concrete; 1.1 General; 1.2 Organization of the Book; 1.3 Closing Remarks; References; 2 Fracture Mechanics of Concrete State-of-the-Art Review; 2.1 Introduction; 2.2 Linear Elastic Fracture Mechanics; 2.2.1 Significance of Stress Intensity Factor; 2.2.2 Concept of R Curve; 2.3 ElasticPlastic Fracture Mechanics; 2.3.1 The CTOD Criterion; 2.3.2 The J-Integral Approach; 2.4 Early Research Using LEFM to Concrete; 2.5 Tensile Behavior of Concrete. 2.5.1 Strain Localization Effect2.5.2 Fracture Process Zone; 2.5.3 Nonlinear Behavior of Concrete; 2.6 Specimen Geometry for Fracture Test of Concrete; 2.6.1 Dimensions of Test Specimens; 2.6.1.1 Three-Point Bending Test (TPBT); 2.6.1.2 Compact Tension (CT) Test; 2.6.1.3 Wedge Splitting Test (WST); 2.7 Nonlinear Fracture Mechanics for Concrete; 2.7.1 Cohesive Crack Model (CCM) or Fictitious Crack Model (FCM); 2.7.1.1 Material Properties for CCM or FCM; 2.7.2 Crack Band Model (CBM); 2.7.3 Two-Parameter Fracture Model (TPFM); 2.7.4 Size-Effect Model (SEM); 2.7.5 Effective Crack Model (ECM). 2.7.6 Double-K Fracture Model (DKFM)2.7.7 The K R Curve Associated with Cohesive Stress Distribution in the FPZ; 2.7.8 Double-G Fracture Model (DGFM); 2.8 Comparative Study and Size-Effect Behavior; 2.9 Weight Function Approach; 2.9.1 Some Existing Weight Functions; 2.9.2 Universal Weight Function for Edge Cracks in Finite Width Plate; 2.9.3 Computation of Stress Intensity Factor and Crack Face Displacement; 2.10 Scope of the Book; 2.11 Closing Remarks; References; 3 Fracture Behavior of Concrete using Cohesive Crack and Size-Effect Models; 3.1 Introduction. 3.2 Cohesive Crack Model for Three-Point Bending Test3.2.1 Formulation Based on Energy Principle; 3.2.2 Basic Assumptions; 3.2.3 Finite Element Discretization; 3.2.4 Beam Deflection; 3.2.5 Model Implementation; 3.3 Softening Function of Concrete; 3.3.1 Linear Softening Function; 3.3.2 Bilinear Softening; 3.3.3 Exponential Softening; 3.3.4 Nonlinear Softening; 3.3.5 Quasi-exponential Softening; 3.4 Numerical Study Using TPBT Specimen; 3.4.1 Experimental Results and Numerical Computation; 3.4.2 Comparison with Numerical Results Using Linear Softening. 3.4.3 Influence of Softening Function on the Global P-CMOD Response3.4.4 Influence of Kink Point in the Bilinear Softening on the Global P-CMOD Response; 3.4.5 Effect of Finite Element Mesh Size on Bearing Capacity of the Beam; 3.4.6 Effect of Size Scale on the Type of Failure; 3.4.7 Size-Scale Deviation From LEFM Concept; 3.4.8 Influence of Softening Function on Size-Effect Curve; 3.5 Numerical Study Using Compact Tension (CT) Specimen; 3.5.1 Global P-COD Response Using Linear Softening Function; 3.5.2 Influence of Softening Functions on the Global P-COD Response. 3.5.3 Influence of Softening Functions on the Size-Scale Transition Toward LEFM
Titelhinweis
Buchausg. u.d.T.: ‡Kumar, Shailendra, 1958 - : Concrete fracture models and applications
ISBN
ISBN 978-3-642-16764-5
Klassifikation
TNK
TEC009020
TEC021000
*74-02
74Rxx
74A45
691
620.1366
TA401-492
ZI 7120
Kurzbeschreibung
Cementitious materials, rocks and fibre-reinforced composites commonly termed as quasibrittle, need a different fracture mechanics approach to model the crack propagation study because of the presence of significant size of fracture process zone ahead of the crack-tip. Recent studies show that concrete structures manifest three important stages in fracture process: crack initiation, stable crack propagation and unstable fracture or failure. Fracture Mechanics concept can better explain the above various stages including the concepts of ductility, size-effect, strain softening and post-cracking behavior of concrete and concrete structures. The book presents a basic introduction on the various nonlinear concrete fracture models considering the respective fracture parameters. To this end, a thorough state-of-the-art review on various aspects of the material behavior and development of different concrete fracture models is presented. The development of cohesive crack model for standard test geometries using commonly used softening functions is shown and extensive studies on the behavior of cohesive crack fracture parameters are also carried out. The subsequent chapter contains the extensive study on the double-K and double-G fracture parameters in which some recent developments on the related fracture parameters are illustrated including introduction of weight function method to Double-K Fracture Model and formulization of size-effect behavior of the double-K fracture parameters. The application of weight function approach for determining of the KR-curve associated with cohesive stress distribution in the fracture process zone is also presented. Available test data are used to validate the new approach. Further, effect of specimen geometry, loading condition, size-effect and softening function on various fracture parameters is investigated. Towards the end, a comparative study between different fracture parameters obtained from various models is presented.
1. Schlagwortkette
Beton
Bruchmechanik
Bruchverhalten
1. Schlagwortkette ANZEIGE DER KETTE
Beton -- Bruchmechanik -- Bruchverhalten
2. Schlagwortkette
Beton
Bruchmechanik
Bruchverhalten
ANZEIGE DER KETTE
Beton -- Bruchmechanik -- Bruchverhalten
SWB-Titel-Idn
338105050
Signatur
Springer E-Book
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$uhttp://dx.doi.org/10.1007/978-3-642-16764-5
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