Structural Analysis of Hollow Blades PDF Download
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723381829
Category :
Languages : en
Pages : 24
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Book Description
A torsional stress analysis of hollow fans blades by the finite element method is presented. The fans are considered to be double circular arc blades, hollowed 30 percent, and twisted by a component of the centrifugal force by the rated revolution. The effects of blade hollowing on strength and rigidity are discussed. The effects of reinforcing webs, placed in the hollowed section in varying numbers and locations, on torsional rigidity and the convergence of stresses, are reported. A forecast of the 30 percent hollowing against torsional loadings is discussed. Ogawa, A. and Sofue, Y. and Isobe, T. Unspecified Center NASA-TM-75718, NAL-TR-533 NASW-3199
Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781723381829
Category :
Languages : en
Pages : 24
Get Book
Book Description
A torsional stress analysis of hollow fans blades by the finite element method is presented. The fans are considered to be double circular arc blades, hollowed 30 percent, and twisted by a component of the centrifugal force by the rated revolution. The effects of blade hollowing on strength and rigidity are discussed. The effects of reinforcing webs, placed in the hollowed section in varying numbers and locations, on torsional rigidity and the convergence of stresses, are reported. A forecast of the 30 percent hollowing against torsional loadings is discussed. Ogawa, A. and Sofue, Y. and Isobe, T. Unspecified Center NASA-TM-75718, NAL-TR-533 NASW-3199
Author: Dimitris I Chortis
Publisher: Springer Science & Business Media
ISBN: 3319008641
Category : Technology & Engineering
Languages : en
Pages : 240
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Book Description
This book concerns the development of novel finite elements for the structural analysis of composite beams and blades. The introduction of material damping is also an important aspect of composite structures and it is presented here in terms of their static and dynamic behavior. The book thoroughly presents a new shear beam finite element, which entails new blade section mechanics, capable of predicting structural blade coupling due to composite coupling and/or internal section geometry. Theoretical background is further expanded towards the inclusion of nonlinear structural blade models and damping mechanics for composite structures. The models effectively include geometrically nonlinear terms due to large displacements and rotations, improve the modeling accuracy of very large flexible blades, and enable the modeling of rotational stiffening and buckling, as well as, nonlinear structural coupling. Validation simulations on specimen level study the geometric nonlinearities effect on the modal frequencies and damping values of composite strips of various angle-ply laminations under either tensile or buckling loading. A series of correlation cases between numerical predictions and experimental measurements give credence to the developed nonlinear beam finite element models and underline the essential role of new nonlinear damping and stiffness terms.
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Category : Aeronautics
Languages : en
Pages : 952
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Category :
Languages : en
Pages : 24
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Category : Propellers, Aerial
Languages : en
Pages : 396
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Category : Engines
Languages : en
Pages : 232
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Author: Chinese Society of Aeronautics and Astronautics
Publisher: Springer Nature
ISBN: 981197652X
Category : Technology & Engineering
Languages : en
Pages : 811
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Book Description
The Chinese Society of Aeronautics and Astronautics holds the Youth Science and Technology Forum biannually, which aims to assess the state of aviation science and technology, recognize advanced scientific and technological accomplishments, foster the development of young aviation science and technology talents, and provide a platform for young science and technology workers to track the frontier of science and technology, exchange novel ideas, and accurately meet the needs of the aviation industry. This book contains original, peer-reviewed research papers from the conference. Topics covered include, but are not limited to, navigation, guidance and control technologies, key technologies for aircraft design and overall optimization, aviation test technologies, aviation airborne systems, electromechanical technologies, structural design, aerodynamics and flight mechanics, other related technologies, advanced aviation materials and manufacturing technologies, advanced aviation propulsion technologies, and civil aviation transportation. Researchers, engineers, and students find this book to be a useful resource because the articles provided here discuss the most recent advancements in aviation science and technology.
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Category : Aeronautics
Languages : en
Pages : 230
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Category :
Languages : en
Pages : 66
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Author: University of New Mexico. Technology Application Center
Publisher:
ISBN:
Category : Electric power-plants
Languages : en
Pages : 524
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