Author: National Aeronautics and Space Administration (NASA) Publisher: Createspace Independent Publishing Platform ISBN: 9781722088767 Category : Languages : en Pages : 44
Book Description
Parallel with the work in Part-1, stress intensity factors for semi-elliptical surface cracks emanating from a circular hole are determined. The 3-D weight function method with the 3D finite element solutions for the uncracked stress distribution as in Part-1 is used for the analysis. Two different loading conditions, i.e. remote tension and wedge loading, are considered for a wide range in geometrical parameters. Both single and double surface cracks are studied and compared with other solutions available in the literature. Typical crack opening displacements are also provided. Zhao, W. and Newman, J. C., Jr. and Sutton, M. A. and Shivakumar, K. N. and Wu, X. R. Langley Research Center RTOP 538-02-10-01...
Author: National Aeronautics and Space Adm Nasa Publisher: Independently Published ISBN: 9781730728839 Category : Science Languages : en Pages : 66
Book Description
Stress intensity factors for quarter-elliptical corner cracks emanating from a circular hole are determined using a 3-D weight function method combined with a 3-D finite element method. The 3-D finite element method is used to analyze uncracked configuration and provide stress distribution in the region where crack is to occur. Using this stress distribution as input, the 3-D weight function method is used to determine stress intensity factors. Three different loading conditions, i.e. remote tension, remote bending and wedge loading, are considered for a wide range in geometrical parameters. The significance in using 3-D uncracked stress distribution and the difference between single and double corner cracks are studied. Typical crack opening displacements are also provided. Comparisons are made with solutions available in the literature. Zhao, W. and Newman, J. C., Jr. and Sutton, M. A. and Wu, X. R. and Shivakumar, K. N. Langley Research Center...
Author: Xue-Ren Wu Publisher: Springer Nature ISBN: 981168961X Category : Science Languages : en Pages : 665
Book Description
This book provides a systematic and standardized approach based on the authors’ over 30 years of research experience with weight function methods, as well as the relevant literature. Fracture mechanics has become an indispensable tool for the design and safe operation of damage-tolerant structures in many important technical areas. The stress intensity factor—the characterizing parameter of the crack tip field—is the foundation of fracture mechanics analysis. The weight function method is a powerful technique for determining stress intensity factors and crack opening displacements for complex load conditions, with remarkable computational efficiency and high accuracy. The book presents the theoretical background of the weight function methods, together with a wealth of analytical weight functions and stress intensity factors for two- and three-dimensional crack geometries; many of these have been incorporated into national, international standards and industrial codes of practice. The accuracy of the results is rigorously verified, and various sample applications are provided. Accordingly, the book offers an ideal reference source for graduate students, researchers, and engineers whose work involves fracture and fatigue of materials and structures, who need not only stress intensity factors themselves but also efficient and reliable tools for obtaining them.
Author: Walter G. Reuter Publisher: ASTM International ISBN: 080311284X Category : Fracture mechanics Languages : en Pages : 428
Book Description
From the symposium (on title) held in Sparks, Nevada, April 1988. Twenty-two peer-reviewed papers are divided into sections on models and experiments (monotonic loading), and fatigue crack growth. Areas addressed include the differences in constraint for 2-D through-thickness cracks and 3-D surface
Author: James M. Larsen Publisher: ASTM International ISBN: 0803114699 Category : Elasticity Languages : en Pages : 228
Book Description
Reviews the most recent methods for testing small cracks in a variety of materials, providing detailed quantitative information on necessary procedures for data acquisition. Emphasizes the characterization of small, three-dimensional fatigue cracks, initiated either naturally or artificially. The ei
Author: National Aeronautics and Space Administration (NASA)
Author: 
Author: 
Author: National Aeronautics and Space Adm Nasa
Author: Xue-Ren Wu
Author: Robert S. Piascik
Author: Walter G. Reuter
Author: J. C. Newman
Author: James M. Larsen
Author: Gary R. Halford