Author: Earl David ReedyPublisher:
ISBN:
Category :
Languages : en
Pages :
Book Description
Model Analysis of Stable Crack Growth
Author: Earl David ReedyFinite Element Analysis of Stable Crack Growth
Author: Zone-Chang LaiNano and Microstructural Design of Advanced Materials
Author: M. A. MeyersPublisher: Elsevier
ISBN: 0080537235
Category : Technology & Engineering
Languages : en
Pages : 317
Book Description
The importance of the nanoscale effects has been recognized in materials research for over fifty years, but it is only recently that advanced characterization and fabrication methods are enabling scientists to build structures atom-by-atom or molecule-by molecule. The understanding and control of the nanostructure has been, to a large extent, made possible by new atomistic analysis and characterization methods pioneered by transmission electron microscopy. Nano and Microstructural Design of Advanced Materials focuses on the effective use of such advanced analysis and characterization techniques in the design of materials. - Teaches effective use of advanced analysis and characterization methods at an atomistic level - Contains many supporting examples of materials in which such design concepts have been successfully applied
Analysis of Stable and Catastrophic Crack Growth Under Rising Load
Author: Varanasi, SR.Publisher:
ISBN:
Category : Aluminum
Languages : en
Pages : 13
Book Description
Some metals exhibit slow crack growth prior to instability under rising load. This paper is concerned with an elastic-plastic finite element plane-stress analysis of stable and catastrophic crack growth in a center-cracked panel of a ductile material, subjected to a monotonically increasing applied stress. The stable crack growth phenomenon is modeled by incorporating a local failure criterion in the stress-analysis procedure. An automatic reidealization procedure is developed to refine the finite element mesh at the new crack-tip position before external load is increased. The method is applied to study the crack-growth behavior of geometrically similar panels of different material stress-strain curves, and results are compared with experiment. The effects of some important parameters on crack growth and stability under rising load are discussed.
Extension of a Stable Crack at a Variable Growth Step
Author: MP. WnukPublisher:
ISBN:
Category : Analysis
Languages : en
Pages : 32
Book Description
This study has been inspired by two proposed models for stable crack growth described by Sih and Kiefer (1979) and Wnuk and Sedmak (1980). Basic assumptions of the second model are reexamined and refined. Although the mathematical analyses involved in both approaches are widely different, it is shown that the physical assumptions underlying these two models are analogous. Both treatments assume a "quantum" nature of crack growth by representing extension of a stable crack as a sequence of steps each of which is executed as a finite jump in the current crack length. While Sih and Kiefer employed the numerical approach to treat the three-dimensional (3D) elastic-plastic fracture problem, here a highly idealized line-plasticity model, modified by an addition of the final stretch growth law, is used.
Shape Memory Alloys
Author: Dimitris C. LagoudasPublisher: Springer Science & Business Media
ISBN: 0387476857
Category : Technology & Engineering
Languages : en
Pages : 446
Book Description
This book provides a working knowledge of the modeling and engineering applications of shape memory alloys (SMAs), beginning with a rigorous introduction to continuum mechanics and continuum thermodynamics as they relate to the development of SMA modeling.Modern SMAs can recover from large amounts of bending and deformation, and millions of repetitions within recoverable ranges. SMAs are used in the medical industry to create stents, in the dental industry to create dental and orthodontic archwires, and in the aerospace industry to create fluid fittings. The text presents a unified approach to the constitutive modeling of SMAs, including modeling of magnetic and high temperature SMAs.
Fracture Mechanics Criteria and Applications
Author: E.E. GdoutosPublisher: Springer Science & Business Media
ISBN: 9400919565
Category : Science
Languages : en
Pages : 326
Book Description
It is difficult to do justice to fracture mechanics in a textbook, for the subject encompasses so many disciplines. A general survey of the field would serve no purpose other than give a collection of references. The present book by Professor E. E. Gdoutos is refreshing because it does not fall into the esoteric tradition of outlining equations and results. Basic ideas and underlying principles are clearly explained as to how they are used in application. The presentations are concise and each topic can be understood by advanced undergraduates in material science and continuum mechanics. The book is highly recommended not only as a text in fracture mechanics but also as a reference to those interested in the general aspects of failure analysis. In addition to providing an in-depth review of the analytical methods for evaluating the fundamental quantities used in linear elastic fracture mechanics, various criteria are discussed re:O. ecting their limitations and applications. Par ticular emphases are given to predicting crack initiation, subcritical growth and the onset of rapid fracture from a single criterion. Those models in which it is assumed that the crack extends from tip to tip rely on the specific surface energy concept. The differences in the global and energy states before and after crack extension were associated with the energy required to create a unit area of crack surface. Applications were limited by the requirement of self-similar crack growth.
Ceramics
Author: Dietrich MunzPublisher: Springer Science & Business Media
ISBN: 3642584071
Category : Technology & Engineering
Languages : en
Pages : 302
Book Description
The book gives a description of the failure phenomena of ceramic materials under mechanical loading, the methods to determine their properties, and the principles for material selection. The book presents fracture mechanical and statistical principles and their application to describe the scatter of strength and lifetime, while special chapters are devoted to creep behaviour, multiaxial failure criteria and thermal shock behaviour. XXXXXXX Neuer Text Describing how ceramic materials fracture and fail under mechanical loading, this book provides methods for determining the properties of ceramics, and gives criteria for selecting ceramic materials for particular applications. It also examines the fracture-mechanical and statistical principles and their use in understanding the strength and durability of ceramics. Special chapters are devoted to creep behavior, criteria for multiaxial failure, and behavior under thermal shock. Readers will gain insight into the design of reliable ceramic components.
Numerical Analysis of Stable Crack Growth in Elastic-plastic Materials in Small Scale and General Yielding
Author: Poh-Sang LamPublisher:
ISBN:
Category : Elastoplasticity
Languages : en
Pages : 256
Book Description
Author: