Elastic Plastic J Integral Solutions For Surface Cracks In Tension Using An Interpolation Methodology
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Elastic Plastic J Integral Solutions Or Surface Cracks In Tension Using An Interpolation Methodology
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Author : National Aeronautics and Space Adm Nasa
language : en
Publisher:
Release Date : 2019-01-15
Elastic Plastic J Integral Solutions Or Surface Cracks In Tension Using An Interpolation Methodology written by National Aeronautics and Space Adm Nasa and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019-01-15 with categories.
No closed form solutions exist for the elastic-plastic J-integral for surface cracks due to the nonlinear, three-dimensional nature of the problem. Traditionally, each surface crack must be analyzed with a unique and time-consuming nonlinear finite element analysis. To overcome this shortcoming, the authors have developed and analyzed an array of 600 3D nonlinear finite element models for surface cracks in flat plates under tension loading. The solution space covers a wide range of crack shapes and depths (shape: 0.2 less than or equal to a/c less than or equal to 1, depth: 0.2 less than or equal to a/B less than or equal to 0.8) and material flow properties (elastic modulus-to-yield ratio: 100 less than or equal to E/ys less than or equal to 1,000, and hardening: 3 less than or equal to n less than or equal to 20). The authors have developed a methodology for interpolating between the goemetric and material property variables that allows the user to reliably evaluate the full elastic-plastic J-integral and force versus crack mouth opening displacement solution; thus, a solution can be obtained very rapidly by users without elastic-plastic fracture mechanics modeling experience. Complete solutions for the 600 models and 25 additional benchmark models are provided in tabular format. Allen, P. A. and Wells, D. N. Marshall Space Flight Center NASA/TP-2013-217480, M-1356
Elastic Plastic J Integral Solutions For Surface Cracks In Tension Using An Interpolation Methodology
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Author : D. N. Wells
language : en
Publisher:
Release Date : 2013
Elastic Plastic J Integral Solutions For Surface Cracks In Tension Using An Interpolation Methodology written by D. N. Wells and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013 with categories.
Elastic Plastic Fracture
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Author : C. F. Shih
language : en
Publisher: ASTM International
Release Date : 1983
Elastic Plastic Fracture written by C. F. Shih and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with Science categories.
Computational Methods In The Mechanics Of Fracture
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Author : Satya N. Atluri
language : en
Publisher: North Holland
Release Date : 1986
Computational Methods In The Mechanics Of Fracture written by Satya N. Atluri and has been published by North Holland this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Technology & Engineering categories.
This volume not only covers the fundamental concepts of fracture mechanics, but also the computational methodologies necessary for practical engineering designs aimed at fracture control. It gives a concise summary of various fracture theories: linear elastic, elastic-plastic, and dynamic fracture mechanics of metals and composites. Novel numerical methods (finite element and boundary element) that enable the treatment of complicated engineering problems are emphasized. Examined are problems of linear elastic fracture of metallic and non-metallic composite materials, three-dimensional problems of surface flaws, elastic-plastic fracture, stable crack growth, and dynamic crack propagation. A comprehensive outline of the energetic approach and energy integrals on fracture mechanics is also given. Contents: Preface. Parts: I. Chapters: 1. Fracture: Mechanics or Art? (F. Erdogan). II. 2. Linear Elastic Fracture Mechanics (A.S. Kobayashi). 3. Elastic-Plastic Fracture (Quasi-Static) (S.N. Atluri and A.S. Kobayashi). 4. Dynamic Crack Propagation in Solids (L.B. Freund). 5. Energetic Approaches and Path-Independent Integrals in Fracture Mechanics (S.N. Atluri). III. 6.
Growth Of Surface Cracks During Large Elastic Plastic Loading Cycles
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Author : ML. Bartlett
language : en
Publisher:
Release Date : 1993
Growth Of Surface Cracks During Large Elastic Plastic Loading Cycles written by ML. Bartlett and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Crack closure categories.
Thin Inconel 718 plates with deep elliptical surface flaws are subjected to large loading cycles under both load and displacement control. Closed-form estimates of the J-integral for surface flaws in finite thickness plates are derived with a modified reference stress method and compared with recent elastic-plastic finite element results. A J-resistance curve for the surface-cracked configuration is developed and compared with data from thick compact tension specimens. Special attention is given to the apparent relationship between ductile tearing and low-cycle fatigue crack growth mechanisms and rates.
Elastic Plastic Fracture Second Symposium Volume I Inelastic Crack Analysis
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Author :
language : en
Publisher: ASTM International
Release Date : 1983
Elastic Plastic Fracture Second Symposium Volume I Inelastic Crack Analysis written by and has been published by ASTM International this book supported file pdf, txt, epub, kindle and other format this book has been release on 1983 with categories.
Study Of Crack Initiation Cr
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Author : Mahinda Dharmasiri Kuruppu
language : en
Publisher: Open Dissertation Press
Release Date : 2017-01-27
Study Of Crack Initiation Cr written by Mahinda Dharmasiri Kuruppu and has been published by Open Dissertation Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-01-27 with Technology & Engineering categories.
This dissertation, "A Study of Crack Initiation and Crack Growth in Elastic and Elastic-plastic Materials Using J-integral Method" by Mahinda Dharmasiri, Kuruppu, was obtained from The University of Hong Kong (Pokfulam, Hong Kong) and is being sold pursuant to Creative Commons: Attribution 3.0 Hong Kong License. The content of this dissertation has not been altered in any way. We have altered the formatting in order to facilitate the ease of printing and reading of the dissertation. All rights not granted by the above license are retained by the author. DOI: 10.5353/th_b3123030 Subjects: Fracture mechanics Elasticity Plasticity
Applied Mechanics Reviews
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Author :
language : en
Publisher:
Release Date : 1974
Applied Mechanics Reviews written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1974 with Mechanics, Applied categories.
Elastic T Stress Solutions Of Embedded Elliptical Cracks Subjected To Uniaxial And Biaxial Loadings
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Author : Jie Qu
language : en
Publisher:
Release Date : 2006
Elastic T Stress Solutions Of Embedded Elliptical Cracks Subjected To Uniaxial And Biaxial Loadings written by Jie Qu and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Biaxial loading categories.
The elastic T-stress has been found to be an important parameter in characterizing the near crack tip elastic-plastic stress states of 2-D and 3-D crack problems. In addition to the J-integral, the T-stress provides an effective two-parameter characterization of 2-D and 3-D elastic-plastic crack tip fields in a variety of crack configurations under small scale yielding conditions. Embedded elliptical crack in an infinite solid subjected to uniaxial or biaxial tension conditions represents an excellent model for many engineering components with embedded cracks. Although extensive analyses are available for stress intensity factors (SIFs) for embedded elliptical cracks, to date no analytical T-stress solutions are available. This paper presents the exact close form solutions for elastic T-stress of an embedded elliptical crack in an infinite body under remote uniaxial or biaxial tension. The foundation of the derivation is based on the potential method for three-dimensional elasticity. Solutions of stress components parallel to and perpendicular to the cracked plane are derived first. T-stress is then obtained from the asymptotic stress field near the crack front. Complete solutions of T-stress along the crack front are established. Further, three-dimensional finite element analyses are conducted to verify the derived solutions; excellent agreements are achieved. When combined with the corresponding K or J solutions, these T-stress solutions are suitable for the analysis of constraint effects for embedded elliptical shaped cracks in engineering components.
Boundary Element Methods In Manufacturing
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Author : Abhijit Chandra
language : en
Publisher: Oxford University Press
Release Date : 1997-04-10
Boundary Element Methods In Manufacturing written by Abhijit Chandra and has been published by Oxford University Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1997-04-10 with Technology & Engineering categories.
This book focuses on the analysis of manufacturing processes and the integration of this analysis into the design cycle. Uniquely, the boundary element method (BEM) is the computational model of choice. This versatile and powerful method has undergone extensive development during the past two decades and has been applied to virtually all areas of engineering mechanics as well as to other fields. Among topics covered are BEM infrastructure, design sensitivity analysis, and detailed discussions of a broad range of manufacturing processes including forming, solidification, machining, and ceramic grinding.