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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
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Book Description
This paper is concerned with describing a damage mechanics formulation which provides for non-isotropic effects using a scalar damage variable. An investigation has been in progress for establishing the constitutive behavior of rock salt at long times and low to moderate confining pressures in relation to the possible use of excavated rooms in rock salt formations as repositories for nuclear waste. An important consideration is the effect of damage manifested principally by the formation of shear induced wing cracks which have a stress dependent orientation. The analytical formulation utilizes a scalar damage parameter, but is capable of indicating the non- isotropic dependence of inelastic straining on the stress state and the confining pressure. Also, the equations indicate the possibility of volumetric expansions leading to the onset of tertiary creep and eventually rupture if the damage variable reaches a critical value.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 15
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Book Description
This paper is concerned with describing a damage mechanics formulation which provides for non-isotropic effects using a scalar damage variable. An investigation has been in progress for establishing the constitutive behavior of rock salt at long times and low to moderate confining pressures in relation to the possible use of excavated rooms in rock salt formations as repositories for nuclear waste. An important consideration is the effect of damage manifested principally by the formation of shear induced wing cracks which have a stress dependent orientation. The analytical formulation utilizes a scalar damage parameter, but is capable of indicating the non- isotropic dependence of inelastic straining on the stress state and the confining pressure. Also, the equations indicate the possibility of volumetric expansions leading to the onset of tertiary creep and eventually rupture if the damage variable reaches a critical value.
Author: O. Allix
Publisher: Elsevier
ISBN: 0080545998
Category : Computers
Languages : en
Pages : 397
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Book Description
Created in 1975, LMT-Cachan is a joint laboratory École Normale Superieure de Cachan, Pierre & Marie Curie (Paris 6) University and the French Research Council CNRS (Department of Engineering Sciences).The Year 2000 marked the 25th anniversary of LMT. On this occasion, a series of lectures was organized in Cachan in September-October, 2000. This publication contains peer-reviewed proceedings of these lectures and is aimed to present engineers and scientists with an overview of the latest developments in the field of damage mechanics. The formulation of damage models and their identification procedures were discussed for a variety of materials.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: Giovanni Bianchi
Publisher: Springer
ISBN: 3709124921
Category : Technology & Engineering
Languages : en
Pages : 139
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Book Description
In 1999 the International Centre for Mechanical Sciences celebrates thirty years of activity. For this celebration CISM has organized a series of courses and meetings on environmental problems, one of the leading subjects today of theoretical and applied research all over the world. The results obtained directly influence our daily life, particularly in applications for protection from pollution and natural hazards. The most significant of the events was the Conference on "Environmental Applications of Mechanics and Computer Science”, where prominent scientists in the field present significant examples of the scientific approach to large scale phenomena involved in environmental problems.
Author: Wohua Zhang
Publisher: Springer Science & Business Media
ISBN: 3642047084
Category : Science
Languages : en
Pages : 937
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Book Description
"Continuum Damage Mechanics and Numerical Applications" presents a systematic development of the theory of Continuum Damage Mechanics and its numerical engineering applications using a unified form of the mathematical formulations in anisotropic and isotropic damage models. The theoretical framework is based on the thermodynamic theory of energy and material dissipation and is described by a set of fundamental formulations of constitutive equations of damaged materials, development equations of the damaged state, and evolution equations of micro-structures. According to concepts of damage-dissipation of the material state and effective evolution of material properties, all these advanced equations, which take nonsymmetrized effects of damage aspects into account, are developed and modified from the traditional general failure models so they are more easily applied and verified in a wide range of engineering practices by experimental testing. Dr. Wohua Zhang is a Professor at Engineering Mechanics Research Center in Zhejiang University of China. Dr. Yuanqiang Cai is a Professor at Department of Civil Engineering in Zhejiang University of China.
Author:
Publisher:
ISBN:
Category : Mechanics, Applied
Languages : en
Pages : 400
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Book Description
Author: W. Zhang
Publisher:
ISBN: 9780858412415
Category : Continuum damage mechanics
Languages : en
Pages : 34
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Book Description
The formulation of a rectangular plate vibration with anisotropic damage is presented in this report. The governing equations are derived by manipulating the general displacement theory, and the anisotropic damage model developed by Valliappan, Zhang and Murti. The equations are then solved using the finite element (FE) method. Using a particular quantitative example, it can be shown that an anisotropic damage will down-shift the frequency spectrum of the plate significantly. (author abstract)
Author: Khémais Saanouni
Publisher: Elsevier Science & Technology
ISBN:
Category : Computers
Languages : en
Pages : 342
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Book Description
These collected writings gather recent advances in numerical and computational aspects of damage mechanics with the intention of stimulating current research and future challenges in this field.
Author: Francisco Armero
Publisher:
ISBN:
Category : Anisotropy
Languages : en
Pages : 44
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Book Description
Author: Jacek J. Skrzypek
Publisher: Springer Science & Business Media
ISBN: 3540364188
Category : Technology & Engineering
Languages : en
Pages : 370
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Book Description
The scope of this book is based on the keynote lectures delivered during the Inter national Symposium on Anisotropic Behaviour of Damaged Materials ABDM, held in Krakow-Przegorzaiy, Poland, September 9-11, 2002. The Symposium was organized by the Solid Mechanics Division of the Institute of Mechanics and Machine Design - Cracow University of Technology, under aus pices of the Dean of the Faculty of Mechanical Engineering, Cracow University of Technology, Prof. S. Michalowski. The Co-organizers of the ABDM Symposium were: • Martin-Luther-Universitat Halle-Wittenberg, • Centre of Excellence for Advanced Materials and Structures AMAS at the In stitute of Fundamental Technological Research of the Polish Academy of Sci ences, Warsaw, • Committee of Mechanics of the Polish Academy of Sciences, Warsaw. Ten chapters of this book in their present form essentially exceed lectures de livered at the Symposium. They should rather be read as not only author's recent achievements in the field, but also the state of art and synthesis done by the lead ers in the mechanics community. The mixed formula of the Symposium, namely: the invited lectures and presentations of the original papers by the participants was used. 23 original papers, published in the Symposium Proceedings on CD, exhaust the full scope of the ABDM Symposium. The present book provides a survey of various damage models focusing on the damage response in anisotropic materials as well as damage-induced anisotropy.
