Shape Optimal Design Using Linear Programming and Finite Element Analysis

Shape Optimal Design Using Linear Programming and Finite Element Analysis PDF Author: Sundar Ananthasivan
Publisher:
ISBN:
Category :
Languages : en
Pages : 144

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Book Description

Shape Optimal Design Using Linear Programming and Finite Element Analysis

Shape Optimal Design Using Linear Programming and Finite Element Analysis PDF Author: Sundar Ananthasivan
Publisher:
ISBN:
Category :
Languages : en
Pages : 144

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Book Description


Shape Design Sensitivity Analysis and Optimization Using the Boundary Element Method

Shape Design Sensitivity Analysis and Optimization Using the Boundary Element Method PDF Author: Zhiye Zhao
Publisher: Springer Science & Business Media
ISBN: 3642843824
Category : Technology & Engineering
Languages : en
Pages : 203

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Book Description
This book investigates the various aspects of shape optimization of two dimensional continuum structures, including shape design sensitivity analysis, structural analysis using the boundary element method (BEM), and shape optimization implementation. The book begins by reviewing the developments of shape optimization, followed by the presentation of the mathematical programming methods for solving optimization problems. The basic theory of the BEM is presented which will be employed later on as the numerical tool to provide the structural responses and the shape design sensitivities. The key issue of shape optimization, the shape design sensitivity analy sis, is fully investigated. A general formulation of stress sensitivity using the continuum approach is presented. The difficulty of the modelling of the ad joint problem is studied, and two approaches are presented for the modelling of the adjoint problem. The first approach uses distributed loads to smooth the concentrated adjoint loads, and the second approach employs the singu larity subtraction method to remove the singular boundary displacements and tractions from the BEM equation. A novel finite difference based approach to shape design sensitivity is pre sented, which overcomes the two drawbacks of the conventional finite difference method. This approach has the advantage of being simple in concept, and eas ier implementation. A shape optimization program for two-dimensional continuum structures is developed, including structural analysis using the BEM, shape design sensitiv ity analysis, mathematical programming, and the design boundary modelling.

Finite Element Approximation for Optimal Shape Design

Finite Element Approximation for Optimal Shape Design PDF Author: J. Haslinger
Publisher:
ISBN:
Category : Mathematics
Languages : en
Pages : 360

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Book Description
A text devoted to the mathematical basis of optimal shape design, to finite element approximation and to numerical realization by applying optimization techniques. The aim is to computerize the design process, thus reducing the time needed to design or to improve an existing design.

Computer Aided Optimal Design: Structural and Mechanical Systems

Computer Aided Optimal Design: Structural and Mechanical Systems PDF Author: Carlos A. Mota Soares
Publisher: Springer Science & Business Media
ISBN: 364283051X
Category : Computers
Languages : en
Pages : 1018

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Book Description
This book contains the edited version of lectures and selected papers presented at the NATO ADVANCED STUDY INSTITUTE ON COMPUTER AIDED OPTIMAL DESIGN: Structural and Mechanical Systems, held in Tr6ia, Portugal, 29th June to 11th July 1986, and organized by CEMUL -Center of Mechanics and Materials of the Technical University of Lisbon. The Institute was attended by 120 participants from 21 countries, including leading scientists and engineers from universities, research institutions and industry, and Ph.D. students. Some participants presented invited and contributed papers during the Institute and almost all participated actively in discussions on scientific aspects during the Institute. The Advanced Study Institute provided a forum for interaction among eminent scientists and engineers from different schools of thought and young reseachers. The Institute addressed the foundations and current state of the art of essential techniques related to computer aided optimal design of structural and mechanical systems, namely: Vari ational and Finite Element Methods in Optimal Design, Numerical Optimization Techniques, Design Sensitivity Analysis, Shape Optimal Design, Adaptive Finite Element Methods in Shape Optimization, CAD Technology, Software Development Techniques, Integrated Computer Aided Design and Knowledge Based Systems. Special topics of growing importance were also pre sented.

Shape and Layout Optimization of Structural Systems and Optimality Criteria Methods

Shape and Layout Optimization of Structural Systems and Optimality Criteria Methods PDF Author: G.I.N. Rozvany
Publisher: Springer
ISBN: 3709127882
Category : Technology & Engineering
Languages : en
Pages : 493

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Book Description
Shape and layout optimization represent some of the most useful but also most difficult classes of problems in structural design, which have been investigated in detail only during the last few years. Shape optimization is concerned with the optimal shape of boundaries of continua or of interfaces between two materials in composites. Layout optimization deals with the simultaneous optimization of the topology, geometry and cross-sectional sizes of structural systems. In spite of its complextiy, layout optimization is a very rewarding task, because it results in much greater savings than the optimization of cross-sectional sizes only. Because of their important role in shape and layout optimization, the book also covers in detail new optimality criteria methods, which are capable of handling many thousand design variables and active design contraints. Shape and layout optimization is becoming an indispensable tool in the design of aeroplanes, space structures, cars, ships, building and civil engineering structures, power stations, chemical plants, artificial organs, sporting equipment, and all other solid systems where stresses and deformations play an important role.

Isogeometric Optimal Design

Isogeometric Optimal Design PDF Author: Seonho Cho
Publisher: John Wiley & Sons
ISBN:
Category : Mathematics
Languages : en
Pages : 0

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Book Description
Presents a unified approach for combining CAD, CAE, sensitivity analysis, and optimization, helping readers to understand the theories of the isogeometric finite element method and shape optimization systematically and accurately. • Presents an emerging concept connecting the research topics of Isogeometric Analysis and Shape Optimal Design • Imparts the ability to integrate the computational description of design with computational analysis tools within a single unified framework • Written by authors at the cutting edge of research and application, as well as a top expert in sensitivity analysis • Spans fundamentals of optimization and analysis in addition to providing concrete application examples • Includes sample codes within the book implementing both Isogeometric Analysis and Isogeometric Shape Optimization as an accompaniment to the examples given

The Optimum Shape

The Optimum Shape PDF Author: James Bennett
Publisher: Springer Science & Business Media
ISBN: 1461594839
Category : Technology & Engineering
Languages : en
Pages : 404

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Book Description
This book contains the papers presented at the International Symposium, "The Optimum Shape: Automated Structural Design," held at the General Motors Research Laboratories on September 3D-October 1, 1985. This was the 30th symposium in a series which the Research Laboratories began sponsoring in 1957. Each symposium has focused on a topic that is both under active study at the Research Laboratories and is also of interest to the larger technical community. While attempts to produce a structure which performs a certain task with the minimum amount of resources probably predates recorded civilization, the idea of coupling formal optimization techniques with computer-based structural analysis techniques was first proposed in the early 1960s. Although it was recognized at this time that the most fundamental description of the problem would be in terms of the shape or contours of the structure, much of the early work described the problem in terms of structural sizing parameters instead of geometrical descriptions. Within the past few years, several research groups have started to explore this more fundamental area of shape design. Initial research has raised many new questions about appropriate selection of design variables, methods of calculating derivatives, and generation of the underlying analysis problem.

Structural Optimization

Structural Optimization PDF Author: William R. Spillers
Publisher: Springer Science & Business Media
ISBN: 0387958657
Category : Technology & Engineering
Languages : en
Pages : 304

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Book Description
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.

Applied Optimal Design

Applied Optimal Design PDF Author: Edward J. Haug
Publisher: John Wiley & Sons
ISBN:
Category : Mathematics
Languages : en
Pages : 530

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Book Description
Good,No Highlights,No Markup,all pages are intact, Slight Shelfwear,may have the corners slightly dented, may have slight color changes/slightly damaged spine.

Shape Optimization And Optimal Design

Shape Optimization And Optimal Design PDF Author: John Cagnol
Publisher: CRC Press
ISBN: 0203904168
Category : Mathematics
Languages : en
Pages : 451

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Book Description
This volume presents developments and advances in modelling passive and active control systems governed by partial differential equations. It emphasizes shape analysis, optimal shape design, controllability, nonlinear boundary control, and stabilization. The authors include essential data on exact boundary controllability of thermoelastic plates with variable transmission coefficients.