FRACTURE AND DAMAGE IN QUASIBRITTLE STRUCTURES

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Fracture And Damage In Quasibrittle Structures

Author : Z.P. Bazant
ISBN : 0203223756
Genre : Architecture
File Size : 65.69 MB
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Understanding of failure of quasibrittle materials is of paramount importance in many engineering fields. This subject has become a broad and important field of considerable mathematical complexity, with many competing models and unsolved problems. Attention in this volume focuses on concrete, rock, masonry, toughened ceramics, ice and other quasibrittle materials characterized by the development of large zones of cracking or other microstructural damage, and its localization into major fractures.
Category: Architecture

Fracture And Size Effect In Concrete And Other Quasibrittle Materials

Author : Zdenek P. Bazant
ISBN : 084938284X
Genre : Technology & Engineering
File Size : 32.24 MB
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Fracture and Size Effect in Concrete and Other Quasibrittle Materials is the first in-depth text on the application of fracture mechanics to the analysis of failure in concrete structures. The book synthesizes a vast number of recent research results in the literature to provide a comprehensive treatment of the topic that does not give merely the facts - it provides true understanding. The many recent results on quasibrittle fracture and size effect, which were scattered throughout many periodicals, are compiled here in a single volume. This book presents a well-rounded discussion of the theory of size effect and scaling of failure loads in structures. The size effect, which is the most important practical manifestation of fracture behavior, has become a hot topic. It has gained prominence in current research on concrete and quasibrittle materials. The treatment of every subject in Fracture and Size Effect in Concrete and Other Quasibrittle Materials proceeds from simple to complex, from specialized to general, and is as concise as possible using the simplest level of mathematics necessary to treat the subject clearly and accurately. Whether you are an engineering student or a practicing engineer, this book provides you with a clear presentation, including full derivations and examples, from which you can gain real understanding of fracture and size effect in concrete and other quasibrittle materials.
Category: Technology & Engineering

Damage And Fracture Of Disordered Materials

Author : Dusan Krajcinovic
ISBN : 3211833277
Genre : Science
File Size : 45.1 MB
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The principal objective of this book is to relate the random distributions of defects and material strength on the microscopic scale with the deformation and residual strength of materials on the macroscopic scale. To reach this goal the authors considered experimental, analytical and computational models on atomic, microscopic and macroscopic scales.
Category: Science

Fracture Scaling

Author : Zdenek P. Bazant
ISBN : 9789401146593
Genre : Science
File Size : 84.64 MB
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This volume is a collection of the papers given at the workshop on Fracture Scaling, held at the University of Maryland, USA, 10-12 June 1999, under the sponsorship of the Office of Naval Research, Arlington, VA, USA. These papers can be grouped under five major themes: Micromechanical analysis Size effects in fiber composites Scaling and heterogeneity Computational aspects and nonlocal or gradient models Size effects in concrete, ice and soils . This workshop is the result of a significant research effort, supported by the Office of Naval Research, into the problems of scaling of fracture in fiber composites, and generally into the problems of scaling in solid mechanics. These problems, which are of interest for many materials, especially all quasibrittle materials, share similar characteristics. Thus, progress in the understanding of scaling problems for one material may help progress for another material. This makes it clear that a dialogue between researchers in various fields of mechanics is highly desirable and should be promoted. In view of this, this volume should be of interest to researchers and advanced graduate students in materials science, solid mechanics and civil engineering.
Category: Science

Probabilistic Mechanics Of Quasibrittle Structures

Author : Zdenek P. Bazant
ISBN : 9781108132770
Genre : Science
File Size : 40.78 MB
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Quasibrittle (or brittle heterogeneous) materials are becoming increasingly important for modern engineering. They include concretes, rocks, fiber composites, tough ceramics, sea ice, bone, wood, stiff soils, rigid foams, glass, dental and biomaterials, as well as all brittle materials on the micro or nano scale. Their salient feature is that the fracture process zone size is non-negligible compared to the structural dimensions. This causes intricate energetic and statistical size effects and leads to size-dependent probability distribution of strength, transitional between Gaussian and Weibullian. The ensuing difficult challenges for safe design are vanquished in this book, which features a rigorous theory with detailed derivations yet no superfluous mathematical sophistication; extensive experimental verifications; and realistic approximations for design. A wide range of subjects is covered, including probabilistic fracture kinetics at nanoscale, multiscale transition, statistics of structural strength and lifetime, size effect, reliability indices, safety factors, and ramification to gate dielectrics breakdown.
Category: Science

Fracture Mechanics Of Concrete

Author : Surendra P. Shah
ISBN : 0471303119
Genre : Technology & Engineering
File Size : 79.50 MB
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FRACTURE MECHANICS OF CONCRETE AND ROCK This book offers engineers a unique opportunity to learn, from internationally recognized leaders in their field, about the latest theoretical advances in fracture mechanics in concrete, reinforced concrete structures, and rock. At the same time, it functions as a superb, graduate–level introduction to fracture mechanics concepts and analytical techniques. Reviews, in depth, the basic theory behind fracture mechanics ∗ Covers the application of fracture mechanics to compression failure, creep, fatigue, torsion, and other advanced topics ∗ Extremely well researched, applies experimental evidence of damage to a wide range of design cases ∗ Supplies all relevant formulas for stress intensity ∗ Covers state–of–the–art linear elastic fracture mechanics (LEFM) techniques for analyzing deformations and cracking ∗ Describes nonlinear fracture mechanics (NLFM) and the latest RILEM modeling techniques for testing nonlinear quasi–brittle materials ∗ And much more Over the past few years, researchers employing techniques borrowed from fracture mechanics have made many groundbreaking discoveries concerning the causes and effects of cracking, damage, and fractures of plain and reinforced concrete structures and rock. This, in turn, has resulted in the further development and refinement of fracture mechanics concepts and tools. Yet, despite the field′s growth and the growing conviction that fracture mechanics is indispensable to an understanding of material and structural failure, there continues to be a surprising shortage of textbooks and professional references on the subject. Written by two of the foremost names in the field, Fracture Mechanics of Concrete fills that gap. The most comprehensive book ever written on the subject, it consolidates the latest theoretical research from around the world in a single reference that can be used by students and professionals alike. Fracture Mechanics of Concrete is divided into two sections. In the first, the authors lay the necessary groundwork with an in–depth review of fundamental principles. In the second section, the authors vividly demonstrate how fracture mechanics has been successfully applied to failures occurring in a wide array of design cases. Key topics covered in these sections include: ∗ State–of–the–art linear elastic fracture mechanics (LEFM) techniques for analyzing deformations and cracking ∗ Nonlinear fracture mechanics (NLFM) and the latest RILEM modeling techniques for testing nonlinear quasi–brittle materials ∗ The use of R–Curves to describe cracking and fracture in quasi–brittle materials ∗ The application of fracture mechanics to compression failure, creep, fatigue, torsion, and other advanced topics The most timely, comprehensive, and authoritative book on the subject currently available, Fracture Mechanics of Concrete is both a complete instructional tool for academics and students in structural and geotechnical engineering courses, and an indispensable working resource for practicing engineers.
Category: Technology & Engineering

Fracture And Damage Of Concrete And Rock Fdcr 2

Author : H.P. Rossmanith
ISBN : 0203474597
Genre : Architecture
File Size : 59.70 MB
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This book forms the Proceedings of the International Conference held in Vienna in November 1992 dealing with ageing, fatigue and fracture of concrete and concrete structures. Special sections cover demolition and recycling, and anchorage engineering. As well as selected international contributions, five specially invited plenary papers are included from Austria, Spain, Japan, Denmark and Sweden.
Category: Architecture

Applications Of Continuum Damage Mechanics To Fatigue And Fracture

Author : David L. McDowell
ISBN : 0803124732
Genre : Technology & Engineering
File Size : 23.66 MB
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Contains papers from the May 1996 Symposium on Applications of Continuum Damage Mechanics (CDM) to Fatigue and Fracture. Papers in Section I deal with various aspects of modeling damage in composite materials, such as high temperature environmental degradation, fatigue, and viscous damage in metal a
Category: Technology & Engineering