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Strain Energy Release Rate Analysis Of The End Notched Flexure Specimen Using The Finite Element Method
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781725638907 Total Pages :34 pages Book Rating :4.6/5 (389 download)
Book Synopsis Strain-Energy-Release Rate Analysis of the End-Notched Flexure Specimen Using the Finite-Element Method by : National Aeronautics and Space Administration (NASA)
Download or read book Strain-Energy-Release Rate Analysis of the End-Notched Flexure Specimen Using the Finite-Element Method written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-16 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-dimensional finite-element analysis of the end-notched flexure specimen was performed using 8-node isoparametric, parabolic elements to evaluate compliance and mode II strain energy release rates, G sub II. The G sub II values were computed using two different techniques: the virtural crack-closure technique (VCCT) and the rate of change of compliance with crack length (compliance derivative method). The analysis was performed for various crack-length-to-semi-span (a/L) ratios ranging from 0.2 to 0.9. Three material systems representing a wide range of material properties were analyzed. The compliance and strain energy release rates of the specimen calculated with the present finite-element analysis agree very well with beam theory equations including transverse shear. The G sub II values calculated using the compliance derivative method compared extremely well with those calculated using the VCCT. The G sub II values obtained by the compliance derivative method using the top or bottom beam deflections agreed closely with each other. The strain energy release rates from a plane-stress analysis were higher than the plane-strain values by only a small percentage, indicating that either assumption may be used in the analysis. The G sub II values for one material system calculated from the finite-element analysis agreed with one solution in the literature and disagreed with the other solution in the literature. Salpekar, S. A. and Raju, I. S. and Obrien, T. K. Langley Research Center NASA-TM-100494, NAS 1.15:100494, USAAVSCOM-TM-87-B-12 RTOP 505-63-01-05...
Book Synopsis American Society of Composites, Fourteenth International Conference Proceedings by : Amer Society Composi
Download or read book American Society of Composites, Fourteenth International Conference Proceedings written by Amer Society Composi and published by CRC Press. This book was released on 1999-10-25 with total page 1030 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conference proceedings of the Fourteenth American Society for Composites held on the September 27-29 1999 at the Holiday Inn-1675 Conference Centre, Fairborn, Ohio.
Book Synopsis Strain-energy-release Rate Analysis of the End-notched Flexure Specimen Using the Finite-element Method by : S. A. Salpekar
Download or read book Strain-energy-release Rate Analysis of the End-notched Flexure Specimen Using the Finite-element Method written by S. A. Salpekar and published by . This book was released on 1987 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two-dimensional finite-element analysis of the end-notched flexure specimen was performed using 8-node isoparametric, parabolic elements to evaluate compliance and Mode II strain energy release rates GII. The GII values were computed using two different techniques: the virtual crack-closure technique (VCCT) and the rate of change of compliance with crack length (compliance derivative method). The analysis was performed for various crack-length-to-semispan (a/L) ratios ranging from 0.2 to 0.9. Three material systems representing a wide range of material properties were analyzed. The compliance and strain energy release rates of the specimen calculated with the present finite-element analysis agree very well with beam theory equations including transverse shear. The GII values calculated using the compliance derivative method compared extremely well with those calculated using the virtual crack-closure technique. The GII values obtained by the compliance derivative method using the top or bottom beam deflections agreed closely with each other. The strain energy release rates from a plane-stress analysis were higher than the plane-strain values by only a small percentage, indicating that either assumption may be used in the analysis. The GII values for one material system calculated from the finite-element analysis agreed with one solution in the literature and disagreed with the other solution in the literature.
Book Synopsis Application of Fracture Mechanics to Composite Materials by : K. Friedrich
Download or read book Application of Fracture Mechanics to Composite Materials written by K. Friedrich and published by Elsevier. This book was released on 2012-12-02 with total page 686 pages. Available in PDF, EPUB and Kindle. Book excerpt: This multiauthor volume provides a useful summary of current knowledge on the application of fracture mechanics to composite materials. It has been written to fill the gap between the literature on fundamental principles of fracture mechanics and the special publications on the fracture properties of conventional materials, such as metals, polymers and ceramics.The data are represented in the form of about 420 figures (including diagrams, schematics and photographs) and 80 tables. The author index covers more than 500 references, and the subject index more than 1000 key words.
Book Synopsis Composite Materials by : T. Kevin O'Brien
Download or read book Composite Materials written by T. Kevin O'Brien and published by ASTM International. This book was released on 1991 with total page 831 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Interlaminar Response of Composite Materials by : N.J. Pagano
Download or read book Interlaminar Response of Composite Materials written by N.J. Pagano and published by Elsevier. This book was released on 2012-12-02 with total page 268 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the topics of major importance toward understanding the most feared failure mode in composite laminates, namely delamination. There are few books at present that describe the phenomenon of composite laminate failure by delamination in such detail.Written by pioneers and principal researchers in various aspects of composite delamination, starting from basic principles to the most current research findings, the work provides a complete study of the theoretical and experimental aspects of composite delamination in one volume.
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1987 with total page 934 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the American Society for Composites 2014-Twenty-ninth Technical Conference on Composite Materials by : Hyonny Kim
Download or read book Proceedings of the American Society for Composites 2014-Twenty-ninth Technical Conference on Composite Materials written by Hyonny Kim and published by DEStech Publications, Inc. This book was released on 2014-09-17 with total page 3583 pages. Available in PDF, EPUB and Kindle. Book excerpt: New and not previously published U.S. and international research on composite and nanocomposite materialsFocus on health monitoring/diagnosis, multifunctionality, self-healing, crashworthiness, integrated computational materials engineering (ICME), and moreApplications to aircraft, armor, bridges, ships, and civil structures This fully searchable CD-ROM contains 270 original research papers on all phases of composite materials, presented by specialists from universities, NASA and private corporations such as Boeing. The document is divided into the following sections: Aviation Safety and Aircraft Structures; Armor and Protection; Multifunctional Composites; Effects of Defects; Out of Autoclave Processing; Sustainable Processing; Design and Manufacturing; Stability and Postbuckling; Crashworthiness; Impact and Dynamic Response; Natural, Biobased and Green; Integrated Computational Materials Engineering (ICME); Structural Optimization; Uncertainty Quantification; NDE and SHM Monitoring; Progressive Damage Modeling; Molecular Modeling; Marine Composites; Simulation Tools; Interlaminar Properties; Civil Structures; Textiles. The CD-ROM displays figures and illustrations in articles in full color along with a title screen and main menu screen. Each user can link to all papers from the Table of Contents and Author Index and also link to papers and front matter by using the global bookmarks which allow navigation of the entire CD-ROM from every article. Search features on the CD-ROM can be by full text including all key words, article title, author name, and session title. The CD-ROM has Autorun feature for Windows 2000 or higher products and can also be used with Macintosh computers. The CD includes the program for Adobe Acrobat Reader with Search 11.0. One year of technical support is included with your purchase of this product.
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 652 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Book Synopsis Damage Mechanics in Engineering Materials by : Jiann-Wen Woody Ju
Download or read book Damage Mechanics in Engineering Materials written by Jiann-Wen Woody Ju and published by Elsevier. This book was released on 1998-03-04 with total page 545 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains thirty peer-reviewed papers that are based on the presentations made at the symposium on "Damage Mechanics in Engineering Materials" on the occasion of the Joint ASME/ASCE/SES Mechanics Conference (McNU97), held in Evanston, Illinois, June 28-July 2, 1997. The key area of discussion was on the constitutive modeling of damage mechanics in engineering materials encompassing the following topics: macromechanics/micromechanical constitutive modeling, experimental procedures, numerical modeling, inelastic behavior, interfaces, damage, fracture, failure, computational methods. The book is divided into six parts: Study of damage mechanics. Localization and damage. Damage in brittle materials. Damage in metals and metal matrix composites. Computational aspects of damage models. Damage in polymers and elastomers.
Book Synopsis Composite Materials by : Ravi B. Deo
Download or read book Composite Materials written by Ravi B. Deo and published by ASTM International. This book was released on 1996 with total page 419 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Shell/3D Modeling Technique for the Analysis of Delaminated Composite Laminates by : Ronald Krueger
Download or read book A Shell/3D Modeling Technique for the Analysis of Delaminated Composite Laminates written by Ronald Krueger and published by . This book was released on 2000 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt: A shell/3D modeling technique was developed for which a local solid finite element model is used only in the immediate vicinity of the delamination front. The goal was to combine the accuracy of the full three-dimensional solution with the computational efficiency of a shell finite element model. Multi-point constraints provided a kinematically compatible interface between the local 3D model and the global structural model which has been meshed with shell finite elements. Double Camtilever Beam, End Notched Flexure, and Single Leg Bending specimens were analyzed first using full 3D finite element models to obtain reference solutions. Mixed mode strain energy release rate distributions were computed using the virtual crack closure technique. The analyses were repeated using the shell/3D technique to study the feasibility for pure mode I, mode II and mixed mode I/II cases. Specimens with a unidirectional layup and with a multidirectional layup were simulated. For a local 3D model, extending to a minimum of about three specimen thicknesses on either side of the delamination front, the results were in good agreement with mixed mode strain energy release rates obtained from computations where the entire specimen had been modeled with solid elements. For large built-up composite structures the shell/3D modeling technique offers a great potential for reducing the model size, since only a relatively small section in the vicinity of the delamination front needs to be modeled with solid elements.
Book Synopsis American Society of Composites, Tenth Technology Proceedings by : Amer Society Composi
Download or read book American Society of Composites, Tenth Technology Proceedings written by Amer Society Composi and published by CRC Press. This book was released on 1995-10-17 with total page 670 pages. Available in PDF, EPUB and Kindle. Book excerpt: Conference proceedings from the American Society of Composites, Tenth Technology Proceedings: Composite Materials, Mechanics and Processing on October 18-20, 1995 at the Miramar Sheraton Hotel Santa Monica, California
Book Synopsis Multi-Functional Materials and Structures III by : Joong Hee Lee
Download or read book Multi-Functional Materials and Structures III written by Joong Hee Lee and published by Trans Tech Publications Ltd. This book was released on 2010-08-11 with total page 1332 pages. Available in PDF, EPUB and Kindle. Book excerpt: Volume is indexed by Thomson Reuters CPCI-S (WoS). It has become a essential but formidable task for all industries to concentrate on developing Nature-friendly products and services. The present work aims to bring together the current knowledge concerning Nature-friendly multi-functional materials and structures. The contributions concentrate on natural fiber composites, smart materials and structures, and advanced composites and their applications, and so on. Readers will find within the most up-to-date advances in the field of multi-functional materials and structures.
Book Synopsis Estimation Of Fracture Behaviour Of Carbon Epoxy And Cnt Reinforced Carbon Epoxy Composites by : P.Rama Lakshmi
Download or read book Estimation Of Fracture Behaviour Of Carbon Epoxy And Cnt Reinforced Carbon Epoxy Composites written by P.Rama Lakshmi and published by Archers & Elevators Publishing House. This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Monthly Catalog of United States Government Publications by :
Download or read book Monthly Catalog of United States Government Publications written by and published by . This book was released on 1996 with total page 936 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Progress in Structures by : Xin Gang Zhou
Download or read book Progress in Structures written by Xin Gang Zhou and published by Trans Tech Publications Ltd. This book was released on 2012-05-14 with total page 3670 pages. Available in PDF, EPUB and Kindle. Book excerpt: The present volumes contain selected papers which offer up-to-date, comprehensive and state-of-the art information on the fields of Structural Engineering; Monitoring and Control of Structures; Structural Rehabilitation, Retrofitting and Strengthening; Reliability and Durability of Structures; Seismic Engineering; Disaster Prevention and Mitigation; Computational Mechanics. The work thus provides invaluable insights into the current possibilities existing in these fields.
