Stresses and Deformation in Wings Subjected to Torsion
Author | : B. F. Ruffner |
Publisher | : |
Total Pages | : 79 |
Release | : 1952 |
Genre | : |
ISBN | : |
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Author | : B. F. Ruffner |
Publisher | : |
Total Pages | : 79 |
Release | : 1952 |
Genre | : |
ISBN | : |
Author | : B. F. Ruffner |
Publisher | : |
Total Pages | : 676 |
Release | : 1952 |
Genre | : Airplanes |
ISBN | : |
Basic equations of Karman and Chien are solved by representing the shape of a torsion box by means of a Fourier series. Angles of twist, longitudinal stresses, and shear stresses are determined in terms of the series coefficients. The method is applied to the calculation of angles of twist and stresses in torsion boxes of rectangular, elliptical, and airfoil cross section. Results obtained for angles of twist and normal stresses are in good agreement with results of Karman and Chien except at sharp corners. Results obtained for shear stresses indicate the necessity for the use of large number of terms of the series for satisfactory accuracy.
Author | : John B. Wheatley |
Publisher | : |
Total Pages | : 64 |
Release | : 1931 |
Genre | : Airplanes |
ISBN | : |
Logical analysis of a box wing necessitates the allowance for the contribution of the drag spars to the torsional strength of the structure. A rigorous analysis is available in the use of the Method of Least Work. The best logical method of analysis is that applying Prandtl's Membrane Analogy. The results so obtained vary by a negligible amount from those obtained by the rigourous method. The stresses in the members of a box wing should be calculated by the membrane analogy method, but should be subject to verification by test before being used in design.
Author | : Paul Kuhn |
Publisher | : |
Total Pages | : 34 |
Release | : 1947 |
Genre | : Deformations (Mechanics) |
ISBN | : |
The elementary theories of bending and torsion often do not describe the stresses in aircraft shell structures with adequate accuracy; more refined stress theories have therefore have developed over a period of years. Theories of this nature are applied to the problem of calculating the deflections, particularly of wings. Bending as well as torsional deflections are discussed for wings without or with cut-outs. Whenever convenient, the formulas are given in such a form that they yield corrections to be added to the deflections calculated by means of the elementary theories. Examples show that the deflection corrections usually are quite small; very simple approximation formulas are therefore adequate for design purposes when conventional structures uder a reasonably uniform loading are being considered.
Author | : United States. National Advisory Committee for Aeronautics |
Publisher | : |
Total Pages | : 616 |
Release | : 1949 |
Genre | : Aeronautics |
ISBN | : |
Author | : Allen F. Donovan |
Publisher | : Princeton University Press |
Total Pages | : 1021 |
Release | : 2015-12-08 |
Genre | : Science |
ISBN | : 140087503X |
Volume VIII of the High Speed Aerodynamics and Jet Propulsion series. This volume includes: performance calculation at high speed; stability and control of high speed aircraft; aeroelasticity and flutter; model testing; transonic wind tunnels; supersonic tunnels; hypersonic experimental facilities; low density wind tunnels; shock tube; wind tunnel measurements; instrumented models in free flight; piloted aircraft testing; free flight range methods. Originally published in 1961. The Princeton Legacy Library uses the latest print-on-demand technology to again make available previously out-of-print books from the distinguished backlist of Princeton University Press. These editions preserve the original texts of these important books while presenting them in durable paperback and hardcover editions. The goal of the Princeton Legacy Library is to vastly increase access to the rich scholarly heritage found in the thousands of books published by Princeton University Press since its founding in 1905.
Author | : Y C Fung |
Publisher | : Courier Dover Publications |
Total Pages | : 516 |
Release | : 2008-10-17 |
Genre | : Technology & Engineering |
ISBN | : 0486469360 |
Geared toward advanced undergraduates and graduate students, this outstanding text surveys aeroelastic problems, their historical background, basic physical concepts, and the principles of analysis.
Author | : |
Publisher | : |
Total Pages | : 728 |
Release | : 1962 |
Genre | : Electrical engineering |
ISBN | : |
Author | : Mohamed Shama |
Publisher | : Springer Science & Business Media |
Total Pages | : 288 |
Release | : 2010-09-27 |
Genre | : Technology & Engineering |
ISBN | : 3642146333 |
In the last few decades, much research work was conducted to improve ship structure analysis and design. Most of the efforts were directed to improve the strength of hull girder and to use the method of finite element analysis more efficiently and effectively. Because of the high degree of complexity of ship structures the interaction between hull girder strength and local strength require special attention. The complex system of stresses could produce unacceptable deformations and high values of equivalent stresses. This book covers an area of ship structure analysis and design that has not been exhaustively covered by other books on ship structures in a simple form. It presents the basic concepts of the methods and procedures required to calculate torsion and shear stresses in ship structures. Moreover, it is enhanced with a set of some solved and unsolved problems, very useful for students of naval and marine engineering.