Download or read book Stress Intensity Factors for Cracks at the Edges of Holes written by D.P. Rooke and published by . This book was released on 1976 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stress intensity Factors for Corner Cracks at the Edge of a Hole written by and published by . This book was released on 1978 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stress Intensity Factors for Corner Cracks at Holes Located Near an Edge written by Dag Wiklander and published by . This book was released on 1984 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stress intensity Factor Equations for Cracks in Three dimensional Finite Bodies Subjected to Tension and Bending Loads written by J. C. Newman and published by . This book was released on 1984 with total page 98 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fracture Toughness Testing and Its Applications written by ASTM Committee E-24 Staff and published by ASTM International. This book was released on 1981-10 with total page 430 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stress Intensity Factors for a Cracked Hole in a Row of Holes written by D. P. Rooke and published by . This book was released on 1977 with total page 19 pages. Available in PDF, EPUB and Kindle. Book excerpt: The compounding technique of obtaining stress intensity factors is applied to cracks at the edge of one hole in a row of periodically spaced holes. The cracks (one or two) lie along the line of holes and perpendicular to the uniform stress which is applied remote from the holes. This configuration models cracks at rivet holes in airframe structures reinforced with riveted stiffeners, if there is little in-plane load-transfer through the rivets. A particular feature of the solution is high accuracy of the results at short crack lengths - a necessary requirement for the reliable estimation of the lifetimes of growing cracks. (Author).

Download or read book Stress Intensity Factors of Hole Edge Cracks written by J. Schijve and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparison Between Empirical and Calculated Stress Intensity Factors of Hole Edge Cracks written by J. Schijve and published by . This book was released on 1983 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatique and Fracture Mechanics written by Gary R. Halford and published by ASTM International. This book was released on 2000 with total page 551 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Compendium of Stress Intensity Factors written by David Percy Rooke and published by . This book was released on 1976 with total page 344 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Fatigue of Structures and Materials written by J. Schijve and published by Springer Science & Business Media. This book was released on 2008-12-16 with total page 627 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fatigue of structures and materials covers a wide scope of different topics. The purpose of the present book is to explain these topics, to indicate how they can be analyzed, and how this can contribute to the designing of fatigue resistant structures and to prevent structural fatigue problems in service. Chapter 1 gives a general survey of the topic with brief comments on the signi?cance of the aspects involved. This serves as a kind of a program for the following chapters. The central issues in this book are predictions of fatigue properties and designing against fatigue. These objectives cannot be realized without a physical and mechanical understanding of all relevant conditions. In Chapter 2 the book starts with basic concepts of what happens in the material of a structure under cyclic loads. It illustrates the large number of variables which can affect fatigue properties and it provides the essential background knowledge for subsequent chapters. Different subjects are presented in the following main parts: • Basic chapters on fatigue properties and predictions (Chapters 2–8) • Load spectra and fatigue under variable-amplitude loading (Chapters 9–11) • Fatigue tests and scatter (Chapters 12 and 13) • Special fatigue conditions (Chapters 14–17) • Fatigue of joints and structures (Chapters 18–20) • Fiber-metal laminates (Chapter 21) Each chapter presents a discussion of a speci?c subject.

Download or read book Stress Intensity Factor for a Corner Crack at the Edge of a Hole in a Plate written by SS. Palusamy and published by . This book was released on 1981 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: A corner-cracked hole in a plate, subjected to remote tension loading, is one of the three benchmark problems identified for the validation of three-dimensional techniques at the workshop held in Battelle Columbus Laboratories. Stress-intensity factor results for the case of circular corner crack obtained by the macroelement technique is presented in this paper. Results for the remote tension loading are compared with those obtained by the boundary-integral equation (BIE) method and three-dimensional finite-element technique based on singular elements.

Download or read book Weight Functions and Stress Intensity Factor Solutions written by Xue-Ren Wu and published by Pergamon. This book was released on 1991 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fracture mechanics is an indispensible tool in the design and safe operation of damage tolerant structures. One of the essential elements in fracture mechanics based analysis is the stress intensity factor. This book provides a powerful theoretical background to the weight function method in fracture mechanics and numerous stress intensity factors. Part I gives a theoretical background and overview of the weight function method. Part II provides further details of the weight functions for various geometries and a large number of stress intensity factor solutions. Part II deals with the determination of crack opening displacements, Dugdale model solutions and crack opening areas.

Download or read book A Re Evaluation of Finite Element Models and Stress Intensity Factors for Surface Cracks Emanating from Stress Concentrations written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-28 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: A re-evaluation of the 3-D finite-element models and methods used to analyze surface crack at stress concentrations is presented. Previous finite-element models used by Raju and Newman for surface and corner cracks at holes were shown to have ill-shaped elements at the intersection of the hole and crack boundaries. These ill-shaped elements tended to make the model too stiff and, hence, gave lower stress-intensity factors near the hole-crack intersection than models without these elements. Improved models, without these ill-shaped elements, were developed for a surface crack at a circular hole and at a semi-circular edge notch. Stress-intensity factors were calculated by both the nodal-force and virtual-crack-closure methods. Both methods and different models gave essentially the same results. Comparisons made between the previously developed stress-intensity factor equations and the results from the improved models agreed well except for configurations with large notch-radii-to-plate-thickness ratios. Stress-intensity factors for a semi-elliptical surface crack located at the center of a semi-circular edge notch in a plate subjected to remote tensile loadings were calculated using the improved models. The ratio of crack depth to crack length ranged form 0.4 to 2; the ratio of crack depth to plate thickness ranged from 0.2 to 0.8; and the ratio of notch radius to the plate thickness ranged from 1 to 3. The models had about 15,000 degrees-of-freedom. Stress-intensity factors were calculated by using the nodal-force method. Tan, P. W. and Raju, I. S. and Shivakumar, K. N. and Newman, J. C., Jr. Langley Research Center RTOP 505-63-01-05...

Download or read book Stress Intensity Factors for Surface and Corner Cracked Fastener Holes by the Weight Function Method written by W. Zhao and published by . This book was released on 1995 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt: The paper presents stress intensity factor solutions for surface and corner-cracked fastener holes by using an efficient and accurate three-dimensional weight function method. The approach is briefly described. Stress intensity factors for crack-face pressure loads of the type (x/r)n are provided, where n varies from 0 to 4. The geometry parameters considered are as follows: the ratio of the hole radius to plate thickness r/T = 1.5 (T = t for corner cracks, T = 2t for surface cracks); the crack aspect ratio a/c = 0.5, 1, and 1.5; the ratio of crack depth-to-plate thickness a/t = 0.1, 0.3, and 0.5. Based on the given solutions and the superposition principle, stress intensity factors for other load cases may be easily obtained. Examples are given for remote tension, biaxial tension, wedge loading in the hole, and simulated pin loading. Also, the effect of the residual stress field following cold expansion is considered for the remote tension loading condition.

Download or read book Stress Intensity Factors for Cracks in Panels with Uniformly Spaced Holes written by Robert H. Dodds and published by . This book was released on 1985 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Stress Intensity Factors for Deep Cracks Emanating from the Corner Formed by a Hole Intersecting a Plate Surface written by JJ. McGowan and published by . This book was released on 1976 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: A technique consisting of a marriage between stress freezing photo-elasticity and a numerical method was used to obtain stress intensity factors for natural cracks emanating from the corner at which a hole intersects a plate surface. Geometries studied were: crack depth to thickness ratios of approximately 0.2, 0.5, and 0.75; crack depth to crack length ratios of approximately 1.0 to 2.0; and crack length to hole radius ratios of about 0.5 to 2.0. All final crack geometries were grown under monotonic loading, and growth was not self similar, with most of the growth occurring through the thickness under remote extension. Stress intensity factors were determined at the intersection of the flaw border (1) with the plate surface (Ks) and (2) with the edge of the hole (KH). Results showed that for the relatively shallow flaws KH ? 1.5 Ks, for the moderately deep flaws KH ? Ks and for the deep flaws KH ? 0.5 Ks, revealing a severe sensitivity of K to flaw geometry. Results were compared with the Bowie theory, and approximate criteria developed by Hall and Finger, and Hsu and Liu. These comparisons showed that these theories significantly overestimated the SIF for moderately deep flaws a/t ? 0.5 at both the plate surface and the hole, but, for shallow flaws, the Hall-Finger theory underestimated the SIF at the hole, and the Bowie theory underestimated the SIF at the surface for deep flaws.