A detailed presentation is offered of the fundamental equations in solid mechanics focusing on constitutive equations including quasibrittle materials. Details are provided on individual numerical algorithms, with a heavier emphasis placed on the understanding of basic principles.
Understanding the time-dependent response and the failure of Quasi-Brittle Materials and Structures is of paramount importance in many engineering fields. Over the last decades this topic has been among the most active in the context of civil engineering applications. It attracted many scientists because of the challenging combination of problems of tremendous mathematical complexity involving stability, damage, strain localisation and size effect, the acute need for the development of modern experimental techniques in order to provide an insight on the degradation processes in materials, and finally the necessity of providing sound and robust numerical methods for predicting the response of structural components. Among the important achievements are the development of continuum based models for failure which are enriched with micro-structural information, the development of new testing methods for characterising fracture processes including the inherent size effect and the advent of modem software for the analysis of failure, time dependent phenomena spanning from creep and shrinkage to impact and perforation problems. Looking ahead in the future, one among the most challenging issues is certainly to develop models capable of tracing the entire life time of constructions and structures. In Europe at least, these problems are becoming more and more of concern because the number of constructions has steadily decreased while existing structures arrive at the end of their design life or experience unexpected degradations. It raises a large number of conceptual problems involving interactions with the environment, coupled physical / chemical / mechanical / thermal actions, inverse analysis and model control, experimental techniques, data acquisition processes, data interpretation and model adaptation. Edited in honour of Professor Zdenek P. Bazant 60th birthday, this volume presents a state of the art in the field of the Mechanics of Quasi-Brittle Materials and Structures. It is also intended to investigate the potentialities and outstanding issues which should be faced toward the development of models aimed at and predicting the life time of existing structures.
A detailed presentation is offered of the fundamental equations in solid mechanics focusing on constitutive equations including quasibrittle materials. Details are provided on individual numerical algorithms, with a heavier emphasis placed on the understanding of basic principles.
This book is concerned with a leading-edge topic of great interest and importance, exemplifying the relationship between experimental research, material modeling, structural analysis and design. It focuses on the effect of structure size on structural strength and failure behaviour. Bazant's theory has found wide application to all quasibrittle materials, including rocks, ice, modern fiber composites and tough ceramics. The topic of energetic scaling, considered controversial until recently, is finally getting the attention it deserves, mainly as a result of Bazant's pioneering work. In this new edition an extra section of data and new appendices covering twelve new application developments are included. The first book to show the 'size effect' theory of structure size on strength Presents the principles and applications of Bazant's pioneering work on structural strength Revised edition with new material on topics including asymptotic matching, flexural strength of fiber-composite laminates, polymeric foam fractures and the design of reinforced concrete beams
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.
Hat ein Werkstoff seine Elastizitatsgrenze erreicht, so verhalt er sich inelastisch. Ingenieure und Designer mussen wissen, mit welchen Eigenschaften dann zu rechnen ist. Dieser Band vermittelt Ihnen den aktuellen Wissensstand auf dem Gebiet des plastischen Verhaltens und der plastischen Zug-Spannungs-Beziehungen. Behandelt werden in erster Linie Baustoffe, vor allem Stahl, aber auch Beton und Boden. Eine ausgewogene Mischung aus qualitativer Diskussion und mathematischer Theorie! (05/00)
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