Analyses Of Elasto Plastic Plates With Cracks

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Analyses Of Elasto Plastic Plates With Cracks

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Author : J. L. Swedlow
language : en
Publisher:
Release Date : 1966

Analyses Of Elasto Plastic Plates With Cracks written by J. L. Swedlow and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with Differential equations categories.

The stress and strain in an elasto-plastic plate containing a crack have been obtained. The large deformations and general work-hardening have been taken into consideration. In addition, the results are used to predict a fracture stress as a function of the material's mechanical properties.

Sixth Order Analyses Of Closure In A Cracked Elasto Plastic Plate

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Author : Francis S. Heming
language : en
Publisher:
Release Date : 1978

Sixth Order Analyses Of Closure In A Cracked Elasto Plastic Plate written by Francis S. Heming and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1978 with categories.

The bending of a plate containing a centrally located, through crack is analyzed. Results are obtained numerically via a finite element analysis based on the assumptions of Mindlin sixth order plate theory, which admits three boundary conditions at any point and includes the effects of transverse shear. Elastic and elasto-plastic results are presented for two cases, one that includes the effects of closure and one that does not. The influence of closure on the local displacements, stress distributions, bending stress intensity factors, crack tip blunting, and the growth of the plastic enclave is demonstrated. The effect of thickness and the significance of transverse shear is also discussed. The results show that boundary conditions are critical to the modelling process, that the effects of closure are significant and must be included when demanded by the actual physical situation, and that the important issues regarding the plate bending problem have been identified and analyzed, so that issues regarding more detailed behavior may be addressed.

Elastic Plastic Analysis Of Cracked Plates

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Author : Peter Daniel Hilton
language : en
Publisher:
Release Date : 1969

Elastic Plastic Analysis Of Cracked Plates written by Peter Daniel Hilton and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1969 with categories.

The Elasto Plastic Analysis Of A Duraluminium Plate With A Single Central Crack

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Author : John H. Argyris
language : en
Publisher:
Release Date : 1967

The Elasto Plastic Analysis Of A Duraluminium Plate With A Single Central Crack written by John H. Argyris and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1967 with categories.

Elasto Plastic Bending Of Cracked Plates Including The Effects Of Crack Closure

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Author : David Paul Jones
language : en
Publisher:
Release Date : 1972

Elasto Plastic Bending Of Cracked Plates Including The Effects Of Crack Closure written by David Paul Jones and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with categories.

Analytical Round Robin For Elastic Plastic Analysis Of Surface Cracked Plates

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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-05-23

Analytical Round Robin For Elastic Plastic Analysis Of Surface Cracked Plates written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-05-23 with categories.

"An analytical round robin for the elastic-plastic analysis of surface cracks in flat plates was conducted with 15 participants. Experimental results from a surface crack tension test in 2219-T8 aluminum plate provided the basis for the inter-laboratory study (ILS). The study proceeded in a blind fashion given that the analysis methodology was not specified to the participants, and key experimental results were withheld. This approach allowed the ILS to serve as a current measure of the state of the art for elastic-plastic fracture mechanics analysis. The analytical results and the associated methodologies were collected for comparison, and sources of variability were studied and isolated. The results of the study revealed that the J-integral analysis methodology using the domain integral method is robust, providing reliable J-integral values without being overly sensitive to modeling details. General modeling choices such as analysis code, model size (mesh density), crack tip meshing, or boundary conditions, were not found to be sources of significant variability. For analyses controlled only by far-field boundary conditions, the greatest source of variability in the J-integral assessment is introduced through the constitutive model. This variability can be substantially reduced by using crack mouth opening displacements to anchor the assessment. Conclusions provide recommendations for analysis standardization. Wells, D. N. and Allen, P. A. Marshall Space Flight Center ELASTIC PROPERTIES; FLAT PLATES; SURFACE CRACKS; PLASTIC PROPERTIES; MATHEMATICAL MODELS; ALUMINUM; FRACTURE MECHANICS; CRACK OPENING DISPLACEMENT; J INTEGRAL; STRESS-STRAIN RELATIONSHIPS; CONSTITUTIVE EQUATIONS; BOUNDARY CONDITIONS; FAR FIELDS; FINITE ELEMENT METHOD; STANDARDIZATION; MODULUS OF ELASTICITY"

A Finite Element Analysis Of Elastic Plastic Plates Containing Cavities And Inclusions With Reference To Fatigue Crack Initiation

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Author : Gunnar Härkegård
language : en
Publisher:
Release Date : 1972

A Finite Element Analysis Of Elastic Plastic Plates Containing Cavities And Inclusions With Reference To Fatigue Crack Initiation written by Gunnar Härkegård and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1972 with categories.

Phase Ii Results Of An Analytical Round Robin For Elastic Plastic Analysis Of Surface Cracked Plates

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Author : Phillip A. Allen
language : en
Publisher:
Release Date : 2018

Phase Ii Results Of An Analytical Round Robin For Elastic Plastic Analysis Of Surface Cracked Plates written by Phillip A. Allen and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018 with Elastic analysis (Engineering) categories.

The second phase of an analytical round robin for the elastic-plastic analysis of surface cracks in flat plates was conducted under the auspices of ASTM Interlaboratory Study 732. The interlaboratory study (ILS) had ten participants with a broad range of expertise and experience, and experimental results from a surface crack tension test in 4142 steel plate loaded well into the elastic-plastic regime provided the basis for the study. The participants were asked to evaluate a surface crack tension test according to the version of the surface crack initiation toughness testing standard published at the time of the ILS, ASTM E2899, -13, Standard Test Method for Measurement of Initiation Toughness in Surface Cracks under Tension and Bending. Data were provided to each participant that represented the fundamental information that would be provided by a mechanical test laboratory prior to evaluating the test result. Participants were asked to interpret the test according to E2899, including evaluation of crack-front constraint, determination of a critical initiation angle along the crack front, determination of the deformation regime of the test, and determination of the critical J-integral value. The choice of finite element analysis constitutive models and treatment of the stress-strain data was left to the discretion of the participants. The hope was that this process would familiarize participants with the standard and provide the task group with very helpful feedback regarding the interpretation of the requirements as they are written. Overall the participants' test analysis results were in good agreement and constructive feedback was received that has resulted in an improved published version of the standard E2899-15.

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.

Stiffness Analysis Of Elasto Plastic Plates

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Author : J. L. Swedlow
language : en
Publisher:
Release Date : 1966

Stiffness Analysis Of Elasto Plastic Plates written by J. L. Swedlow and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1966 with categories.

The Prandtl-Reuss flow rule is used as a basic for deriving the constitutive equations for elasto-plastic media with work-hardening. The equations are specialized to the cases of torsion of prismatic bars, plane stress, and plane strain. In the case of plane stress, the direct stiffness method may be extended to provide solutions, and the requisite procedure is outlined. As an example of the type of problem that may be treated, a rectangular plate is considered with an internal crack, showing the distribution of elements and a typical stress-strain curve. A sample of the numerical results is given. The effect of large strains is also discussed.