Mechanics of Optimal Structural Design: Minimum Weight Structures

by David Rees (Brunel University)

• ISBN13: 9780470747810
• ISBN10: 0470747811
• Format: eBook
• Copyright: 2009-12-01
• Publisher: Wiley

Summary

In a global climate where engineers are increasingly under pressure to make the most of limited resources, there are huge potential financial and environmental benefits to be gained by designing for minimum weight. With Mechanics of Optimal Structural Design, David Rees brings the original approach of weight optimization to the existing structural design literature, providing a methodology for attaining minimum weight of a range of structures under their working loads. He addresses the current gap in education between formal structural design teaching at undergraduate level and the practical application of this knowledge in industry, describing the analytical techniques that students need to understand before applying computational techniques that can be easy to misuse without this grounding. Shows engineers how to approach structural design for minimum weight in clear, concise terms Contains many new least-weight design techniques, taking into consideration different manners of loading and including new topics that have not previously been considered within the least-weight theme Considers the demands for least-weight road, air and space vehicles for the future Enhanced by illustrative worked examples to enlighten the theory, exercises at the end of each chapter that enable application of the theory covered, and an accompanying website with worked examples and solutions housed at www.wiley.com/go/reesThe least-weight analyses of basic structural elements ensure a spread of interest with many applications in mechanical, civil, aircraft and automobile engineering. Consequently, this book fills the gap between the basic material taught at undergraduate level and other approaches to optimum design, for example computer simulations and the finite element method.

Table of Contents

Preface

Glossary of Terms

Key Symbols

Compression of Slender Struts

Introduction

Failure Criteria

Solid Cross-Sections

Thin-Walled, Tubular Sections

Thin-Walled, Open Sections

Summary of Results

References

Exercises

Compression of Wide Struts

Introduction

Failure Criteria

Cellular Sections

Open Sections

Corrugated Sandwich Panel

Summary of Results

References

Exercise

Bending of Slender Beams

Introduction

Solid Cross-Sections

Thin-Walled, Tubular Sections

Open Sections

Summary of Results

References

Exercises

Torsion of Bars and Tubes

Introduction

Solid Cross-Sections

Thin-Walled, Open Sections

Thin-Walled, Closed Tubes

Multi-Cell Tubes

References

Exercises

Shear of Solid Bars, Tubes and Thin Sections

Introduction

Bars of Solid Section

Thin-Walled Open Sections

Thin-Walled, Closed Tubes

Concluding Remarks

References

Exercise

Combined Shear and Torsion in Thin-Walled Sections

Introduction

Thin-Walled, Open Sections

Thin-Walled, Closed Tubes

Concluding Remarks

References

Exercises

Combined Shear and Bending in Idealised Sections

Introduction

Idealised Beam Sections

Idealised Open Sections

Idealised Closed Tubes

References

Exercises

Shear in Stiffened Webs

Introduction

Castellations in Shear

Corrugated Web

Flat Web with Stiffeners

References

Exercises

Frame Assemblies

Introduction

Double-Strut Assembly

Multiple-Strut Assembly

Cantilevered Framework

Tetrahedron Framework

Cantilever Frame with Two Struts

Cantilever Frame with One Strut

References

Exercises

Simply Supported Beams and Cantilevers

Introduction

Variable Bending Moments

Cantilever with End-Load

Cantilever with Distributed Loading

Simply Supported Beam with Central Load

Simply Supported Beam with Uniformly Distributed Load

Additional Failure Criteria

References

Exercises

Optimum Cross-Sections for Beams

Introduction

Approaching Optimum Sections

Generalised Optimum Sections

Optimum Section, Combined Bending and Shear

Solid, Axisymmetric Sections

Fully Optimised Section

Fully Optimised Weight

Summary

References

Exercises

Structures under Combined Loading

Introduction

Combined Bending and Torsion

Cranked Cantilever

Cranked Strut with End-Load

Cranked Bracket with End-Load

Portal Frame with Central Load

Cantilever with End and Distributed Loading

Centrally Propped Cantilever with End-Load

End-Propped Cantilever with Distributed Load

Simply Supported Beam with Central-Concentrated and Distributed Loadings

Centrally Propped, Simply Supported Beam with Distributed Load

References

Exercises

Encastré Beams

Introduction

Central-Concentrated Load

Uniformly Distributed Load

Combined Loads

References

Exercises

Plastic Collapse of Beams and Frames

Introduction

Plane Frames

Beam Plasticity

Collapse of Simple Beams

Encastríe Beams

Continuous Beams

Portal Frames

Effect of Axial Loading upon Collapse

Effect of Shear Force upon Collapse

Effect of Hardening upon Collapse

References

Exercises

Dynamic Programming

Introduction

Single-Span Beam

Two-Span Beam

Three-Span Beam

Design Space

Reference

Exercises

Mechanical Properties

Non-Metals

Metals and Alloys

References

Plate Buckling Under Uniaxial Compression

Wide and Slender Struts

Plates with Supported Sides

Inelastic Buckling

Post-Buckling

References

Plate Buckling Under Biaxial Compression and Shear

Biaxial Compression

Pure Shear

Inelastic Shear Buckling

References

Secondary Buckling

Buckling Modes

Local Compressive Buckling

Global Buckling

Local Shear Buckling

References

Bibliography

Index

Table of Contents provided by Publisher. All Rights Reserved.