Stress Intensity Factors For Surface Cracks With Arbitrary Shapes In Plates And Shells PDF Download
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Author | : T. Miyoshi |
Publisher | : |
Total Pages | : 14 |
Release | : 1985 |
Genre | : Finite element method |
ISBN | : |
Download Stress Intensity Factors for Surface Cracks with Arbitrary Shapes in Plates and Shells Book in PDF, ePub and Kindle
In order to analyze stress intensity factors for surface cracks with arbitrary shapes in plates and shells, the authors have developed a new finite element scheme based upon the line spring model. In this scheme Ahmad's thick shell elements are combined with the newly developed line spring elements with quadratic shape functions. This line spring method has more potential of application than a previously reported method where flat shell elements were combined with the line spring elements with linear shape functions.
Author | : George C. Sih |
Publisher | : Springer Science & Business Media |
Total Pages | : 344 |
Release | : 2012-12-06 |
Genre | : Science |
ISBN | : 940101292X |
Download Plates and shells with cracks Book in PDF, ePub and Kindle
This third volume of a series on Mechanies of Fraeture deals with eraeks in plates and shelIs. It was noted in Volume 2 on three-dimensional eraek problems that additional free surfaees can lead to substantial mathematical complexities, often making the analysis unmanageable. The theory of plates and shelIs forms a part of the theory of elasticity in which eertain physieal assumptions are made on the basis that the distanee between two bounded surfaees, either fiat or eurved, is small in eomparison with the overall dimen sions of the body. In modern times, the broad and frequent applieations of plate- and shell-like struetural members have aeted as a stimulus to whieh engineers and researchers in the field of fracture meehanies have responded with a wide variety of solutions of teehnieal importanee. These eontributions are covered in this book so that the reader may gain an understanding of how analytieal treat me nt s ofplates and shells containing initial imperfeetions in the form of eraeks are earried out. The development of plate and shell theories has involved long standing controversy on the eonsisteney of omitting eertain small terms and at the same time retaining others of the same order of magnitude. This defieieney depends on the ratio of the plate or shell thiekness, h, to other eharaeteristie dimensions and eannot be eompletely resolved in view of the approximations inherent in the transverse dependence of the extensional and bending stresses.
Author | : Melvin F. Kanninen |
Publisher | : ASTM International |
Total Pages | : 676 |
Release | : |
Genre | : |
ISBN | : 9780803102255 |
Download Fracture mechanics : fifteenth symposium Book in PDF, ePub and Kindle
Author | : Thomas A. Cruse |
Publisher | : ASTM International |
Total Pages | : 936 |
Release | : 1988 |
Genre | : Fracture mechanics |
ISBN | : 0803109725 |
Download Fracture Mechanics, Nineteenth Symposium Book in PDF, ePub and Kindle
Author | : Ramalakshmi Pullela |
Publisher | : |
Total Pages | : 252 |
Release | : 2005 |
Genre | : Finite element method |
ISBN | : |
Download Computation of Stress Intensity Factor for Through Cracks in Plates and Bending of Shells Using P-version Finite Element Method Book in PDF, ePub and Kindle
Author | : Mettu, SR. |
Publisher | : |
Total Pages | : 21 |
Release | : 1994 |
Genre | : Fracture mechanics |
ISBN | : |
Download Stress Intensity Factor Solutions for Surface Cracks in Flat Plates Subjected to Nonuniform Stresses Book in PDF, ePub and Kindle
The case of a surface crack in a flat plate has received a lot of attention from the fracture mechanics community because of its practical applicability as an idealization of a flaw in structures. Among all the solutions available, those of Raju and Newman seem to be the most accepted and cover the widest range of geometric parameters. These solutions are, however, known only for the cases of tensile and bending loads, and include the effect of finite width using an empirical equation. Residual stresses and more complex forms of loading lead to nonlinear stress distributions across the thickness in real structures. Attempts were made by a few researchers to provide solutions for arbitrary loading using the weight-function and other methods, but a comprehensive treatment of these solutions is not available. The objective of the present work is to provide complete solutions including the effect of finite width using direct tabular inter polation of the finite-element results and to demonstrate the accuracy of a weight-function approach for computing stress intensity factors for a cracked plate subject to arbitrary stresses across the thickness. The reference solutions used in the weight-function scheme were obtained using the three-dimensional finite-element method (FEM). The full range of geometric parameters such as the crack-length-to-width ratio 2c/W, the crack-depth-to-thickness ratio a/t, and the aspect ratio a/c was covered so that accurate interpolation and extrapolation could be made for any given geometry. Piecewise cubic Hermite interpolation was used to compute the quantities corresponding to intermediate values of the geometric parameters. The new solution was compared with the earlier Newman-Raju equation. The new solution in tabular form was then used directly in the weight-function method. The stress intensity factor solution developed here was incorporated into the fatigue crack growth program NASA/FLAGRO, which is widely used by the aerospace community.
Author | : J. C. Newman (Jr) |
Publisher | : |
Total Pages | : 56 |
Release | : 1978 |
Genre | : |
ISBN | : |
Download A Review and Assessment of the Stress-intensity Factors for Surface Cracks Book in PDF, ePub and Kindle
Author | : I. S. Raju |
Publisher | : |
Total Pages | : 52 |
Release | : 1977 |
Genre | : |
ISBN | : |
Download Improved Stress-intensity Factors for Semi-elliptical Surface Cracks in Finite-thickness Plates Book in PDF, ePub and Kindle
Author | : J. C. Newman |
Publisher | : |
Total Pages | : 52 |
Release | : 1979 |
Genre | : Materials |
ISBN | : |
Download Analyses of Surface Cracks in Finite Plates Under Tension Or Bending Loads Book in PDF, ePub and Kindle
Author | : Ashley Francis Emery |
Publisher | : |
Total Pages | : 8 |
Release | : 1968 |
Genre | : Green's functions |
ISBN | : |
Download ASME 68-WA/MET-18 Book in PDF, ePub and Kindle