Problems of Mixed Mode Crack Propagation
Author: E. E. Gdoutos
Publisher:
Published: 1984
Total Pages: 204
ISBN-13: 9789024730568
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Problems of mixed mode crack propagation
Author: E.E. Gdoutos
Publisher: Springer Science & Business Media
Published: 2012-12-06
Total Pages: 214
ISBN-13: 9400961898
DOWNLOAD EBOOK →This is not just another book on fracture mechanics. In recent years, there have been many books published on this subject in an attempt to assess the state of the art and its applications. The majority of the work dealt with energy release rate or critical stress intensity factor and is applicable only to fracture toughness testing. The main reason for this restriction is that the energy release concept cannot easily be extended to mixed mode fracture that occurs in practice as the rule rather than the exception. Cracks will normally curve or turn because the direction of loading can change as a function of time. Their directions of growth cannot be assumed as an a priori and must be determined from a pre-assumed criterion. Analysts are still perplexed with selecting an appropriate fracture criterion because it requires much discernment and judgement. Criteria which often appeared valid for idealized situations are quickly dis credited when encountering more complex physical phenomena. Moreover, the claim of generality cannot be justified on the basis of agreement between theory and experiment for a few simple examples.
Problems of mixed mode crack propagation
Author: Emmanuel Gdoutos
Publisher: Springer
Published: 2011-11-06
Total Pages: 204
ISBN-13: 9789400961906
DOWNLOAD EBOOK →This is not just another book on fracture mechanics. In recent years, there have been many books published on this subject in an attempt to assess the state of the art and its applications. The majority of the work dealt with energy release rate or critical stress intensity factor and is applicable only to fracture toughness testing. The main reason for this restriction is that the energy release concept cannot easily be extended to mixed mode fracture that occurs in practice as the rule rather than the exception. Cracks will normally curve or turn because the direction of loading can change as a function of time. Their directions of growth cannot be assumed as an a priori and must be determined from a pre-assumed criterion. Analysts are still perplexed with selecting an appropriate fracture criterion because it requires much discernment and judgement. Criteria which often appeared valid for idealized situations are quickly dis credited when encountering more complex physical phenomena. Moreover, the claim of generality cannot be justified on the basis of agreement between theory and experiment for a few simple examples.
Methods of Analysis and Solutions of Crack Problems
Author: George C. Sih
Publisher: Springer Science & Business Media
Published: 1973-01-31
Total Pages: 578
ISBN-13: 9789001798604
DOWNLOAD EBOOK →It is weH known that the traditional failure criteria cannot adequately explain failures which occur at a nominal stress level considerably lower than the ultimate strength of the material. The current procedure for predicting the safe loads or safe useful life of a structural member has been evolved around the discipline oflinear fracture mechanics. This approach introduces the concept of a crack extension force which can be used to rank materials in some order of fracture resistance. The idea is to determine the largest crack that a material will tolerate without failure. Laboratory methods for characterizing the fracture toughness of many engineering materials are now available. While these test data are useful for providing some rough guidance in the choice of materials, it is not clear how they could be used in the design of a structure. The understanding of the relationship between laboratory tests and fracture design of structures is, to say the least, deficient. Fracture mechanics is presently at astandstill until the basic problems of scaling from laboratory models to fuH size structures and mixed mode crack propagation are resolved. The answers to these questions require some basic understanding ofthe theory and will not be found by testing more specimens. The current theory of fracture is inadequate for many reasons. First of aH it can only treat idealized problems where the applied load must be directed normal to the crack plane.
The Variational Approach to Fracture
Author: Blaise Bourdin
Publisher: Springer Science & Business Media
Published: 2008-04-19
Total Pages: 173
ISBN-13: 1402063954
DOWNLOAD EBOOK →Presenting original results from both theoretical and numerical viewpoints, this text offers a detailed discussion of the variational approach to brittle fracture. This approach views crack growth as the result of a competition between bulk and surface energy, treating crack evolution from its initiation all the way to the failure of a sample. The authors model crack initiation, crack path, and crack extension for arbitrary geometries and loads.
Mixed-mode Crack Behavior
Author: Keith John Miller
Publisher: ASTM International
Published: 1999
Total Pages: 340
ISBN-13: 0803126026
DOWNLOAD EBOOK →Three-Dimensional Crack Problems
Author: M.K. Kassir
Publisher: Springer
Published: 1975-04-30
Total Pages: 516
ISBN-13:
DOWNLOAD EBOOK →Configurational Forces as Basic Concepts of Continuum Physics
Author: Morton E. Gurtin
Publisher: Springer Science & Business Media
Published: 2008-01-20
Total Pages: 248
ISBN-13: 0387226567
DOWNLOAD EBOOK →Included is a presentation of configurational forces within a classical context and a discussion of their use in areas as diverse as phase transitions and fracture.
The Life of Cracks
Author: Srečko Glodež
Publisher: Cambridge Scholars Publishing
Published: 2020-07-13
Total Pages: 175
ISBN-13: 1527556549
DOWNLOAD EBOOK →Many people find the concept of fracture and damage mechanics to be somewhat problematic, mainly because, until recently, close attention in mechanics was focused especially on the strength and resistance of materials. In this sense, to speak of fracture is as uncomfortable for some as it is to speak of a deadly disease. In confronting and preventing a fatal disease, one must understand its complexity, symptoms, and behavior; by the same token, in securing the strength of an engineering structure, one must understand the reasons and type of its potential failure. This book will provide knowledge and insights on this matter to its readers.
Methods of Analysis and Solutions of Crack Problems
Author: George C. Sih
Publisher: Springer Science & Business Media
Published: 2013-11-11
Total Pages: 562
ISBN-13: 9401722609
DOWNLOAD EBOOK →It is weH known that the traditional failure criteria cannot adequately explain failures which occur at a nominal stress level considerably lower than the ultimate strength of the material. The current procedure for predicting the safe loads or safe useful life of a structural member has been evolved around the discipline oflinear fracture mechanics. This approach introduces the concept of a crack extension force which can be used to rank materials in some order of fracture resistance. The idea is to determine the largest crack that a material will tolerate without failure. Laboratory methods for characterizing the fracture toughness of many engineering materials are now available. While these test data are useful for providing some rough guidance in the choice of materials, it is not clear how they could be used in the design of a structure. The understanding of the relationship between laboratory tests and fracture design of structures is, to say the least, deficient. Fracture mechanics is presently at astandstill until the basic problems of scaling from laboratory models to fuH size structures and mixed mode crack propagation are resolved. The answers to these questions require some basic understanding ofthe theory and will not be found by testing more specimens. The current theory of fracture is inadequate for many reasons. First of aH it can only treat idealized problems where the applied load must be directed normal to the crack plane.
