Download or read book Design and Analysis of Orthotrophic Ring Stiffened Cylindrical Shells Subjected to External Hydrostatic Pressure written by and published by . This book was released on 2008 with total page 91 pages. Available in PDF, EPUB and Kindle. Book excerpt: Three theories are presented for the analysis of ring-stiffened or monocoque cylindrical shells under hydrostatic pressure. The theories compute the stress state and the axisymmetric collapse, interbay buckling, and general instability pressures from external hydrostatic pressure loading. The theories were derived for the case of specially orthotropic material with theoretically uniform properties through the thickness; the theories apply equally to shells made of isotropic materials. A computer program, DAPS4 (Design and Analysis of Plastic Shells, Version 4), was written that incorporates these theories that can be used as an initial sizing tool or analysis of a shell's hydrostatic pressure capability. The program includes a "pseudo-plastic" method to account for the reduction of computed collapse pressures when the stress state is above the proportional limit of the material's stress-strain curve. The purpose of this report is to document the theories and the code. Correlation with numerous pressure tests is shown. A user manual with example problems is included.
Download or read book Ring stiffened Orthotropic Circular Cylindrical Shell Under Hydrostatic Pressure written by Joseph Kempner and published by . This book was released on 1968 with total page 126 pages. Available in PDF, EPUB and Kindle. Book excerpt: A ring-reinforced, orthotropic circular cylindrical shell subjected to external hydrostatic pressure loading is investigated. The stresses and deflections throughout the shell are determined by a shell theory which considers the combined and separate effects of large rotations, transverse shear deformation, initial deflections and Flugge type thickness terms. The ring deformations are described by both a deep ring theory and a plane strain analysis. The results are used in the development of pertinent design formulae. Numerical results applicable to a typical glass-reinforced-plastic shell indicate that the nonlinear effects may be accurately provided for by using a perturbation solution. Hill's criterion for yielding of an orthotropic material as well as an analysis to approximate the actual stresses in the constituent materials of a nonhomogeneous shell are also applied.
Download or read book Optimum Design of Ring Stiffened Cylindrical Shells written by Allen J. Bronowicki and published by . This book was released on 1974 with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report deals with the optimum structural design of circular cylindrical shells reinforced with identical uniformly spaced T-ring stiffeners, and subjected to external pressure loading. The optimization problems considered are of three types: (1) minimum-weight design, (2) design for maximum separation of the lowest two natural frequencies, and (3) design for maximum separation of the lowest two natural frequencies which have primarily axial content. Gross buckling is precluded by specifying a minimum natural frequency, and additional behavioral constraints preclude yielding or buckling of panels, T-ring stiffeners, and web and flange instabilities within each T-ring. Analysis is based on use of an equivalent orthotropic shell model, and optimization is accomplished through use of a sequential unconstrained minimization technique. (Modified author abstract).
Download or read book Optimum Design of Isotropic Monocoque and Ring Stiffened Circular Cylindrical Shells Subject to External Hydrostatic Pressure written by Henry A. Castillo Jr and published by . This book was released on 1992 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is to create a flexible code which is to be used in the investigation of optimum (minimum weight) shell designs. A shell analysis/design program (DAPS3) and a general purpose numerical optimization program (ADS) are incorporated into a single code (THESIS). This code provides the user great flexibility in changing the design variables and constraints which model the optimization problem. The optimum designs produced by this code are compared to DAPS3 optimum designs in order to identify any improvements made by the numerical optimization technique.
Download or read book Optimum Design of Isotropic Monocoque and Ring stiffened Circular Cylindrical Shells Subject to External Hydrostatic Pressure written by Henry A. Castillo and published by . This book was released on 1992 with total page 125 pages. Available in PDF, EPUB and Kindle. Book excerpt: The objective of this research is to create a flexible code which is to be used in the investigation of optimum (minimum weight) shell designs. A shell analysis/design program (DAPS3) and a general purpose numerical optimization program (ADS) are incorporated into a single code (THESIS). This code provides the user great flexibility in changing the design variables and constraints which model the optimization problem. The optimum designs produced by this code are compared to DAPS3 optimum designs in order to identify any improvements made by the numerical optimization technique.
Download or read book Buckling of Orthotropic Conical Shells Under External Pressure written by Josef Singer and published by . This book was released on 1962 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: Donnell stablity equtions for thin, cilar, orthotropic conical shells are presented and solved for external presre loading. the solution is likewise appied o stiffened conical shells by consideration of equivalent othotropic shells. Typical cses are computed and compared wth corresponding isotropic shells. Correlation with equivalent cylindrical shells then yields a simple approximate stability analysis for orthotropic or ring-stiffened conical shells under hydrostatic pressure. (Author).
Download or read book Pressure Vessels and Piping Design and Analysis Analysis written by American Society of Mechanical Engineers and published by . This book was released on 1972 with total page 790 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Structural Analysis of Cylindrical Composite Shells with Stiffening rings Subjected to External Hydrostatic Pressure written by Daniel Nicholas Kosareo and published by . This book was released on 1994 with total page 578 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book General Instability of Ring stiffened Cylindrical Shells Subject to External Hydrostatic Pressure written by Thomas E. Reynolds and published by . This book was released on 1959 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1987 with total page 1126 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.
Download or read book Behaviour of Ring Stiffened Cylindrical Shells Subjected to External Pressure written by Chandrakant Dinkerray Patel and published by . This book was released on 1972 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book On the Axisymmetric Collapse of Cylindrical Shells Under External Hydrostatic Pressure written by S. D. Lee and published by . This book was released on 1967 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Computerized buckling analysis of shells written by D. Bushnell and published by Springer Science & Business Media. This book was released on 1985-09-30 with total page 456 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes the work performed by Lockheed Palo Alto Research Labora tory, Palo Alto, California 94304. The work was sponsored by Air Force Office of Scientific Research, Bolling AFB, Washington, D. C. under Grant F49620-77-C-0l22 and by the Flight Dynamics Laboratory, Air Force Wright Aeronautical Laboratories, Wright-Patterson AFB, Ohio under Contract F3361S-76-C-31OS. The work was completed under Task 2307Nl, "Basic Research in Behavior of Metallic and Composite Components of Airframe Structures". The work was admini stered by Lt. Col. J. D. Morgan (AFOSR) and Dr. N. S. Khot (AFWAL/FIBRA). The contract work was performed between October 1977 and December 1980. The technical report was released by the Author in December 1981. Preface Many structures are assembled from parts which are thin. For example, a stiffened plate or cylindrical panel is composed of a sheet the thickness of which is small com pared to its length, breadth, and stiffener- spacing, and stiffeners the thickness of which is small compared to their _ heights and lengths. These assembled structures, loaded in compression, can buckle overall, that is sheet and stiffeners can collapse together in a general instability mode; the sheet can buckle locally between stiffeners; the stiffeners can cripple; and a variety of complex buckling interactions can occur involving local and overall deformations of both sheet and stiffeners. More complex, built-up structures can buckle in more complex and subtle ways.
Download or read book Bulletin on Stability Design of Cylindrical Shells written by and published by . This book was released on 1987 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Applied Mechanics Reviews written by and published by . This book was released on 1973 with total page 636 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Thin Walled Structures written by J. Loughlan and published by CRC Press. This book was released on 2018-02-06 with total page 988 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains the papers presented at the Fourth International Conference of Thin-Walled Structures (ICTWS4), and contains 110 papers which, collectively, provide a comprehensive state-of-the-art review of the progress made in research, development and manufacture in recent years in thin-walled structures.The presentations at the conference had representation form 35 different countries and their topical areas of interest included aeroelastic response, structural-acoustic coupling, aerospace structures, analysis, design, manufacture, cold-formed structures, cyclic loading, dynamic loading, crushing, energy absorption, fatigue, fracture, damage tolerance, plates, stiffened panels, plated structures, polymer matrix composite members, sandwich structures, shell structures, thin-walled beams, columns and vibrational response. The range of applications of thin-walled structures has become increasingly diverse with a considerable deployment of thin-walled structural elements and systems being found in a wide range of areas within Aeronautical, Automotive, Civil, Mechanical, Chemical and Offshore Engineering fields. This volume is an extremely useful reference volume for researchers and designers working within a wide range of engineering disciplines towards the design, development and manufacture of efficient thin-walled structural systems.
Download or read book Buckling of Thin Metal Shells written by J.G. Teng and published by CRC Press. This book was released on 2006-06-28 with total page 518 pages. Available in PDF, EPUB and Kindle. Book excerpt: Thin-walled metal shell structures are highly efficient in their use of material, but they are particularly sensitive to failure by buckiling. Many different forms of buckling can occur for different geometries and different loading conditions. Because this field of knowledge is both complex and industrially important, it is of great interest and c
