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Development Of Procedures For Large Scale Automated Minimum Weight Structural Design
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Book Synopsis Development of Procedures for Large Scale Automated Minimum Weight Structural Design by : Ronald A. Gellatly
Download or read book Development of Procedures for Large Scale Automated Minimum Weight Structural Design written by Ronald A. Gellatly and published by . This book was released on 1968 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report presents detailed programming information on the use of the developed linear and nonlinear computer programs for the automated design of minimum weight structures. General operational instructions for the programs, which are coded in FORTRAN IV, are given. Detailed requirements for the operating system and machine configurations including peripheral storage devices (such as magnetic tape or disk units) are specified. The report also includes source notation for the programs and instructions for the alterations to the linear program for various machine sizes. Full listings and flow charts of the programs, and detailed input instructions are provided as appendixes.
Download or read book NBS Special Publication written by and published by . This book was released on 1968 with total page 828 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings written by and published by . This book was released on 1968 with total page 1446 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Optimum Design of Structures by : Lahbib Chibani
Download or read book Optimum Design of Structures written by Lahbib Chibani and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 165 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the integrated approach of analysis and optimal design of structures. This approach, which is more convenient than the so-called nested approach, has the difficulty of generating a large optimization problem. To overcome this problem a methodology of decomposition by multilevel is developed. This technique, which is also suitable for implementation on parallel processing computers, has the advantage of reducing the size of the optimization problem generated. The geometric programming for both equality and inequality constraints is used in the optimization.
Book Synopsis Optimal Structural Design by : Ronald A. Gellatly
Download or read book Optimal Structural Design written by Ronald A. Gellatly and published by . This book was released on 1971 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report considers the state of the art in methods of structural optimization. Mathematical programming based methods, while extremely successful with problems of moderate size tend to become prohibitively costly when applied to large scale structures. A novel approach to the weight optimization of indeterminate structures under multiple loading conditions with strength and displacement constraints has been developed and is presented herein. Using this method significant improvements in computational time have been achieved over direct numerical search methods. In some cases the numbers of iterations required to determine the least weight have been reduced by factors of over 20. The rate of convergence is independent of problem size permitting application to large scale structures. Examples of application of the new approach to a number of problems are included.
Book Synopsis Approximate Multiple Configuration Analysis and Allocation for Least Weight Structural Design by : Robert J. Melosh
Download or read book Approximate Multiple Configuration Analysis and Allocation for Least Weight Structural Design written by Robert J. Melosh and published by . This book was released on 1967 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes a rapid reanalysis technique (reducing analysis costs by factors between 2 and 100) and a rapid search procedure (reducing the number of design steps by a factor of 25) for obtaining optimum designs. Reanalysis is an approximate procedure based on extremum energy principles and leading, monotonically, to results as exact as desired. THe desing process is an allocation procedure. Each element of the structure is sized in turn. Optimization is addressed toward least weight design of truss systems with multiple loadings and a discrete set of admissible sizings (materials). The new technique can easily include prestress as a design variable. It can be extended to treat any set of finite elements and is based on use of the force or displacement method or both. Because of the modularity of calculations, it is well suited to computer implementation for multi-element structural systems.
Book Synopsis Technical Abstract Bulletin by : Defense Documentation Center (U.S.)
Download or read book Technical Abstract Bulletin written by Defense Documentation Center (U.S.) and published by . This book was released on 1967 with total page 784 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Criteria and Methods of Structural Optimization by : Andrzej M Brandt
Download or read book Criteria and Methods of Structural Optimization written by Andrzej M Brandt and published by Springer Science & Business Media. This book was released on 1987-06-30 with total page 560 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is intended to serve all those who are interested in structural opti mization, whether they work in this field or study it for other purposes. Rapid growth of interest in the cognitive aspects of optimization and the increas ing demands that the present day engineer has to meet in modern design have created the need of a monographic treatment of the subject. The vast number and wide range of structural optimization problems formulated and investigated in the last twenty years call for an attempt to sum up the pres ent state of knowledge in this domain and to outline the directions of its further development. The present authors undertook this task, hoping that the result would stimulate further work towards finding new methods and solutions and increasing the range of applications of the optimization methods to structural design. The immediate aim of the book is to present the basic criteria and methods of optimization and to provide a reference guide to the most important publications in the field. 'The book consists of fourteen chapters. Chapter 1 introduces the basic concepts, definitions and assumptions relating to structural optimization. Chapter 2 gives the foundations of optimization for minimum elastic strain potential or maximum rigidity, and sets a basis for optimization of bar, plate and lattice structures. Chapter 3 presents criteria of strength design and their applications to plane structures.
Book Synopsis Developments in Structural Analysis and Synthesis by Function Minimization by : Lucien A. Schmit (Jr.)
Download or read book Developments in Structural Analysis and Synthesis by Function Minimization written by Lucien A. Schmit (Jr.) and published by . This book was released on 1971 with total page 150 pages. Available in PDF, EPUB and Kindle. Book excerpt: Function minimization methods in structural analysis and optimum design are discussed. A computer program which implements the energy search method of nonlinear finite element analysis is presented. Several recent weight optimization methods based on finite element analysis are reviewed. Special characteristics of the finite element method relevant to automated design are identified. Some efficient approximate analysis methods for optimization applications are explored. Applications of some of these methods to plane frames and finite-deflection trusses are presented.
Download or read book NASA Contractor Report written by and published by . This book was released on 1992 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1995 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the Second Conference on Matrix Methods in Structural Mechanics by :
Download or read book Proceedings of the Second Conference on Matrix Methods in Structural Mechanics written by and published by . This book was released on 1969 with total page 1496 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Structural Optimization by : William R. Spillers
Download or read book Structural Optimization written by William R. Spillers and published by Springer Science & Business Media. This book was released on 2009-06-10 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Structural Optimization is intended to supplement the engineer’s box of analysis and design tools making optimization as commonplace as the finite element method in the engineering workplace. It begins with an introduction to structural optimization and the methods of nonlinear programming such as Lagrange multipliers, Kuhn-Tucker conditions, and calculus of variations. It then discusses solution methods for optimization problems such as the classic method of linear programming which leads to the method of sequential linear programming. It then proposes using sequential linear programming together with the incremental equations of structures as a general method for structural optimization. It is furthermore intended to give the engineer an overview of the field of structural optimization.
Book Synopsis Development of Procedures for Large Scale Automated Minimum Weight Structural Design by : Ronald A. Gellatly
Download or read book Development of Procedures for Large Scale Automated Minimum Weight Structural Design written by Ronald A. Gellatly and published by . This book was released on 1966 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report documents the development of new computer programs for the automated minimum weight design of aerospace structures. Two programs are discussed in detail, an intermediate capacity linear merit function program, and a large scale nonlinear program. The intermediate capacity program can be used for the optimization of major structural components of up to approximately 170 degrees of freedom with fixed configuration. The large scale program is capable of handling structures with up to 450 degrees of freedom and includes geometric variables. Detailed descriptions of the preparation of input data are included. Examples are given of the application of the program to a wide variety of structures including major airframe components, indicating the weight savings possible through application of the optimization techniques.
Book Synopsis Structural Optimization by : Ovadia E. Lev
Download or read book Structural Optimization written by Ovadia E. Lev and published by . This book was released on 1981 with total page 236 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Collection of Technical Papers on Structures and Materials by :
Download or read book A Collection of Technical Papers on Structures and Materials written by and published by . This book was released on 1975 with total page 354 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the Third Conference on Matrix Methods in Structural Mechanics by :
Download or read book Proceedings of the Third Conference on Matrix Methods in Structural Mechanics written by and published by . This book was released on 1973 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
