Experimental And Analytical Investigation Of Dynamic Characteristics Of Extension Twist Coupled Composite Tubular Spars
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Experimental And Analytical Investigation Of Dynamic Characteristics Of Extension Twist Coupled Composite Tubular Spars
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Author : Renee C. Lake
language : en
Publisher:
Release Date : 1993
Experimental And Analytical Investigation Of Dynamic Characteristics Of Extension Twist Coupled Composite Tubular Spars written by Renee C. Lake and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Composite materials categories.
Experimental And Analytical Investigation Of Dynamic Characteristics Of Extension Twist Coupled Composite Tubular Spars
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-07-06
Experimental And Analytical Investigation Of Dynamic Characteristics Of Extension Twist Coupled Composite Tubular Spars 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 2018-07-06 with categories.
The results from a study aimed at improving the dynamic and aerodynamic characteristics of composite rotor blades through the use of extension-twist coupling are presented. A set of extension-twist-coupled composite spars was manufactured with four plies of graphite-epoxy cloth prepreg. These spars were noncircular in cross-section design and were therefore subject to warping deformations. Three different cross-sectional geometries were developed: D-shape, square, and flattened ellipse. Three spars of each type were fabricated to assess the degree of repeatability in the manufacturing process of extension-twist-coupled structures. Results from free-free vibration tests of the spars were compared with results from normal modes and frequency analyses of companion shell-finite-element models. Five global modes were identified within the frequency range from 0 to 2000 Hz for each spar. The experimental results for only one D-shape spar could be determined, however, and agreed within 13.8 percent of the analytical results. Frequencies corresponding to the five global modes for the three square spars agreed within 9.5, 11.6, and 8.5 percent of the respective analytical results and for the three elliptical spars agreed within 4.9, 7.7, and 9.6 percent of the respective analytical results. Lake, Renee C. and Izadpanah, Amir P. and Baucom, Robert M. Langley Research Center...
Thin Walled Composite Beams
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Author : Liviu Librescu
language : en
Publisher: Springer Science & Business Media
Release Date : 2006-01-15
Thin Walled Composite Beams written by Liviu Librescu and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006-01-15 with Technology & Engineering categories.
Annotation This is the first monograph devoted to the foundation of the theory of composite anisotropic thin-walled beams and to its applications in various problems involving the aeronautical/aerospace, helicopter, naval and mechanical structures. Throughout the theoretical part, an effort was made to provide the treatment of the subject by using the equations of the 3-D elasticity theory. Non-classical effects such as transverse shear, warping constraint, anisotropy of constituent materials yielding the coupling of twist-bending (lateral), bending (transversal)-extension have been included and their implications have been thoroughly analyzed. Thermal effects have been included and in order to be able to circumvent their deleterious effects, functionally graded materials have been considered in their construction. Implications of the application of the tailoring technique and of the active feedback control on free vibration, dynamic response, instability and aeroelasticity of such structures have been amply investigated. Special care was exercised throughout this work to address and validate the adopted solution methodologies and the obtained results against those available in the literature and obtained via numerical or experimental means.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1977
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1977 with Aeronautics categories.
A Historical Overview Of Aeroelasticity Branch And Transonic Dynamics Tunnel Contributions To Rotorcraft Technology And Development
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Author :
language : en
Publisher: DIANE Publishing
Release Date : 2001
A Historical Overview Of Aeroelasticity Branch And Transonic Dynamics Tunnel Contributions To Rotorcraft Technology And Development written by and has been published by DIANE Publishing this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Monthly Catalogue United States Public Documents
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Author :
language : en
Publisher:
Release Date : 1993
Monthly Catalogue United States Public Documents written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Government publications categories.
Monthly Catalog Of United States Government Publications
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Author : United States. Superintendent of Documents
language : en
Publisher:
Release Date : 1993
Monthly Catalog Of United States Government Publications written by United States. Superintendent of Documents and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Government publications categories.
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Aeronautical Engineering
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Author :
language : en
Publisher:
Release Date : 1993
Aeronautical Engineering written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Aeronautics categories.
A selection of annotated references to unclassified reports and journal articles that were introduced into the NASA scientific and technical information system and announced in Scientific and technical aerospace reports (STAR) and International aerospace abstracts (IAA).
Thirty Sixth Aiaa Asme Asce Ahs Asc Structures Structural Dynamics And Materials Conference And Aiaa Asme Adaptive Structures Forum
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Author :
language : en
Publisher: AIAA (American Institute of Aeronautics & Astronautics)
Release Date : 1995
Thirty Sixth Aiaa Asme Asce Ahs Asc Structures Structural Dynamics And Materials Conference And Aiaa Asme Adaptive Structures Forum written by and has been published by AIAA (American Institute of Aeronautics & Astronautics) this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Technology & Engineering categories.
Nasa Sp
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Author :
language : en
Publisher:
Release Date : 1993
Nasa Sp written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1993 with Aeronautics categories.