Innovative Design Of Composite Structures The Use Of Curvilinear Fiber Format In Composite Structure Design
DOWNLOAD
Download Innovative Design Of Composite Structures The Use Of Curvilinear Fiber Format In Composite Structure Design PDF/ePub or read online books in Mobi eBooks. Click Download or Read Online button to get Innovative Design Of Composite Structures The Use Of Curvilinear Fiber Format In Composite Structure Design book now. This website allows unlimited access to, at the time of writing, more than 1.5 million titles, including hundreds of thousands of titles in various foreign languages. If the content not found or just blank you must refresh this page
Innovative Design Of Composite Structures The Use Of Curvilinear Fiber Format In Composite Structure Design
DOWNLOAD
Author : National Aeronautics and Space Adm Nasa
language : en
Publisher: Independently Published
Release Date : 2018-12-31
Innovative Design Of Composite Structures The Use Of Curvilinear Fiber Format In Composite Structure Design written by National Aeronautics and Space Adm Nasa and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-12-31 with Science categories.
The gains in structural efficiency are investigated that can be achieved by aligning the fibers in some or all of the layers in a laminate with the principal stress directions in those layers. The name curvilinear fiber format is given to this idea. The problem studied is a plate with a central circular hole subjected to a uniaxial tensile load. An iteration scheme is used to find the fiber directions at each point in the laminate. Two failure criteria are used to evaluate the tensile load capacity of the plates with a curvilinear format, and for comparison, counterpart plates with a conventional straightline fiber format. The curvilinear designs for improved tensile capacity are then checked for buckling resistance. It is concluded that gains in efficiency can be realized with the curvilinear format. Hyer, M. W. and Charette, R. F. NASA-CR-186453, NAS 1.26:186453, VPI-E-90-04 NAG1-901...
Innovative Design Of Composite Structures The Use Of Curvilinear Fiber Format In Structural Design Of Composites
DOWNLOAD
Author : National Aeronautics and Space Adm Nasa
language : en
Publisher: Independently Published
Release Date : 2018-11-21
Innovative Design Of Composite Structures The Use Of Curvilinear Fiber Format In Structural Design Of Composites written by National Aeronautics and Space Adm Nasa and has been published by Independently Published this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-11-21 with Science categories.
The influence is investigated of a curvilinear fiber format on load carrying capacity of a layered fiber reinforced plate with a centrally located hole. A curvilinear fiber format is descriptive of layers in a laminate having fibers which are aligned with the principal stress directions in those layers. Laminates of five curvilinear fiber format designs and four straightline fiber format designs are considered. A quasi-isotropic laminate having a straightline fiber format is used to define a baseline design for comparison with the other laminate designs. Four different plate geometries are considered and differentiated by two values of hole diameter/plate width equal to 1/6 and 1/3, and two values of plate length/plate width equal to 2 and 1. With the plates under uniaxial tensile loading on two opposing edges, alignment of fibers in the curvilinear layers with the principal stress directions is determined analytically by an iteration procedure. In-plane tensile load capacity is computed for all of the laminate designs using a finite element analysis method. A maximum strain failure criterion and the Tsai-Wu failure criterion are applied to determine failure loads and failure modes. Resistance to buckling of the laminate designs to uniaxial compressive loading is analyzed using the commercial code Engineering Analysis Language. Results indicate that the curvilinear fiber format laminates have higher in-plane tensile load capacity and comparable buckling resistance relative to the straightline fiber format laminates. Charette, R. F. and Hyer, M. W. COMPOSITE STRUCTURES; FAILURE ANALYSIS; FIBER COMPOSITES; FIBER ORIENTATION; REINFORCED PLATES; STRESS DISTRIBUTION; AXIAL LOADS; BUCKLING; COMPRESSION LOADS; CURVATURE; FINITE ELEMENT METHOD; HOLE GEOMETRY (MECHANICS); STRUCTURAL DESIGN; TENSILE STRESS...
Innovative Design Of Composite Structures
DOWNLOAD
Author : National Aeronautics and Space Adm Nasa
language : en
Publisher:
Release Date : 2018-10-21
Innovative Design Of Composite Structures 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 2018-10-21 with categories.
The gains in buckling performance are explored that can be achieved by deviating from the conventional straightline fiber format and considering the situation whereby the fiber orientation in a layer, or a group of layers, can vary from point to point. The particular situation studied is a simply supported square plate with a centrally located hole loaded in compression. By using both a sensitivity analysis and a gradient-search technique, fiber orientation in a number of regions of the plate are selected so as to increase the buckling load relative to baseline straightline designs. The sensitivity analysis is used to determine which regions of the plate have the most influence on buckling load, and the gradient search is used to find the design that is believed to represent the absolute maximum buckling load for the conditions prescribed. Convergence studies and sensitivity of the final design are discussed. By examining the stress resultant contours, it is shown how the curvilinear fibers move the load away from the unsupported hole region of the plate to the supported edges, thus increasing the buckling capacity. The tensile capacity of the improved buckling design is investigated, and it is shown that both tensile capacity and buckling capacity can be improved with the curvilinear fiber concept. Hyer, M. W. and Lee, H. H. Unspecified Center NAG1-901...
The Use Of Curvilinear Fiber Format In Structural Design Of Composites
DOWNLOAD
Author : Robert F. Charette
language : en
Publisher:
Release Date : 1991
The Use Of Curvilinear Fiber Format In Structural Design Of Composites written by Robert F. Charette and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1991 with categories.
Thermal And Structural Performance Of Tow Placed Variable Stiffness Panels
DOWNLOAD
Author : Kingsley Chauncey Wu
language : en
Publisher: IOS Press
Release Date : 2006
Thermal And Structural Performance Of Tow Placed Variable Stiffness Panels written by Kingsley Chauncey Wu and has been published by IOS Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Science categories.
In this study, a combination of experiments and analyses are performed to characterize the structural response of two variable stiffness composite panels to a series of thermal and mechanical loads. This characterization covers all phases of the structure's lifetime from design through global failure. These panels are advanced composite structures in which the fiber orientation angle varies continuously as tows are laid down along predefined curvilinear paths within each ply. The panels are manufactured from AS4/977-3 graphite-epoxy prepreg using an advanced tow placement system. Both variable stiffness panels have the same nominal layup, but one panel (the panel with overlaps) has overlapping tow bands of varying thickness and the other panel (the panel without overlaps) has a theoretically uniform-thickness laminate. A conventional uniform-thickness panel with a straight-fiber [ 45]5s layup (the baseline panel) is also evaluated..."
Scientific And Technical Aerospace Reports
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1992
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 1992 with Aeronautics categories.
Monthly Catalog Of United States Government Publications
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1994
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1994 with Government publications categories.
Monthly Catalogue United States Public Documents
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1991
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 1991 with Government publications categories.
Government Reports Annual Index
DOWNLOAD
Author :
language : en
Publisher:
Release Date : 1990
Government Reports Annual Index written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Government reports announcements & index categories.
Stability And Failure Of High Performance Composite Structures
DOWNLOAD
Author : Shamsher Bahadur Singh
language : en
Publisher: Springer Nature
Release Date : 2022-07-05
Stability And Failure Of High Performance Composite Structures written by Shamsher Bahadur Singh and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2022-07-05 with Technology & Engineering categories.
This book is written to introduce the application of high-performance composite materials such as fiber reinforced polymers, functionally graded composites, and sustainable fiber reinforced composites for development of thin-walled plated structures, beams, girders, and deck structures subjected to different kinds of loads. This book also includes test cases and its validation with finite element method using general purpose commercial computer software. Moreover, the book also deals with design methodology of advanced composite materials based on different applications. The comprehensive overview of the state-of-the-art research on the high-performance composite structures dealing with their stability, response, and failure characteristics will be of significant interest to scientists, researchers, students, and engineers working in the thrust area of advanced composite structures. This book is also helpful for Ph.D. candidates for developing their fundamental understanding on high-performance composite structures, and it will also appropriate for master- and undergraduate-level courses on design of composite structures especially for Civil Engineering Infrastructures.