Freshly Printed - allow 7 days lead
Couldn't load pickup availability
Mechanics of Optimal Structural Design
Minimum Weight Structures
David W. A. Rees (Author)
9780470746233, Wiley
Hardback, published 2 October 2009
592 pages
25.2 x 17.8 x 3.7 cm, 1.143 kg
"The usual formulation is strength-to-weight ratio, but Rees (engineering and design, Brunel U.) points out that the goal is to reduce weight without reducing strength, not vice versa, so a better expression would be the weight-to-strength ratio, and that is what he explores." (Book News, December 2009)
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. The 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.
Preface xi Glossary of Terms xv Key Symbols xix Chapter 1 Compression of Slender Struts 1 1.1 Introduction 1 1.2 Failure Criteria 1 1.3 Solid Cross-Sections 3 1.4 Thin-Walled, Tubular Sections 6 1.5 Thin-Walled, Open Sections 13 1.6 Summary of Results 24 References 25 Exercises 25 Chapter 2 Compression of Wide Struts 29 2.1 Introduction 29 2.2 Failure Criteria 29 2.3 Cellular Sections 31 2.4 Open Sections 37 2.5 Corrugated Sandwich Panel 57 2.6 Summary of Results 60 References 61 Exercise 61 Chapter 3 Bending of Slender Beams 65 3.1 Introduction 65 3.2 Solid Cross-Sections 66 3.3 Thin-Walled, Tubular Sections 69 3.4 Open Sections 76 3.5 Summary of Results 88 References 89 Exercises 89 Chapter 4 Torsion of Bars and Tubes 91 4.1 Introduction 91 4.2 Solid Cross-Sections 92 4.3 Thin-Walled, Open Sections 99 4.4 Thin-Walled, Closed Tubes 109 4.5 Multi-Cell Tubes 121 References 130 Exercises 130 Chapter 5 Shear of Solid Bars, Tubes and Thin Sections 135 5.1 Introduction 135 5.2 Bars of Solid Section 136 5.3 Thin-Walled Open Sections 143 5.4 Thin-Walled, Closed Tubes 159 5.5 Concluding Remarks 170 References 171 Exercise 171 Chapter 6 Combined Shear and Torsion in Thin-Walled Sections 173 6.1 Introduction 173 6.2 Thin-Walled, Open Sections 173 6.3 Thin-Walled, Closed Tubes 177 6.4 Concluding Remarks 189 References 190 Exercises 190 Chapter 7 Combined Shear and Bending in Idealised Sections 193 7.1 Introduction 193 7.2 Idealised Beam Sections 193 7.3 Idealised Open Sections 201 7.4 Idealised Closed Tubes 210 References 221 Exercises 221 Chapter 8 Shear in Stiffened Webs 223 8.1 Introduction 223 8.2 Castellations in Shear 223 8.3 Corrugated Web 226 8.4 Flat Web with Stiffeners 231 References 237 Exercises 237 Chapter 9 Frame Assemblies 239 9.1 Introduction 239 9.2 Double-Strut Assembly 239 9.3 Multiple-Strut Assembly 244 9.4 Cantilevered Framework 247 9.5 Tetrahedron Framework 253 9.6 Cantilever Frame with Two Struts 256 9.7 Cantilever Frame with One Strut 259 References 264 Exercises 264 Chapter 10 Simply Supported Beams and Cantilevers 265 10.1 Introduction 265 10.2 Variable Bending Moments 265 10.3 Cantilever with End-Load 271 10.4 Cantilever with Distributed Loading 281 10.5 Simply Supported Beam with Central Load 292 10.6 Simply Supported Beam with Uniformly Distributed Load 303 10.7 Additional Failure Criteria 316 References 322 Exercises 323 Chapter 11 Optimum Cross-Sections for Beams 325 11.1 Introduction 325 11.2 Approaching Optimum Sections 326 11.3 Generalised Optimum Sections 328 11.4 Optimum Section, Combined Bending and Shear 330 11.5 Solid, Axisymmetric Sections 331 11.6 Fully Optimised Section 341 11.7 Fully Optimised Weight 345 11.8 Summary 355 References 356 Exercises 356 Chapter 12 Structures under Combined Loading 357 12.1 Introduction 357 12.2 Combined Bending and Torsion 357 12.3 Cranked Cantilever 359 12.4 Cranked Strut with End-Load 362 12.5 Cranked Bracket with End-Load 365 12.6 Portal Frame with Central Load 368 12.7 Cantilever with End and Distributed Loading 371 12.8 Centrally Propped Cantilever with End-Load 377 12.9 End-Propped Cantilever with Distributed Load 385 12.10 Simply Supported Beam with Central-Concentrated and Distributed Loadings 390 12.11 Centrally Propped, Simply Supported Beam with Distributed Load 395 References 400 Exercises 400 Chapter 13 Encastré Beams 403 13.1 Introduction 403 13.2 Central-Concentrated Load 403 13.3 Uniformly Distributed Load 418 13.4 Combined Loads 437 References 463 Exercises 463 Chapter 14 Plastic Collapse of Beams and Frames 465 14.1 Introduction 465 14.2 Plane Frames 466 14.3 Beam Plasticity 468 14.4 Collapse of Simple Beams 474 14.5 Encastré Beams 478 14.6 Continuous Beams 481 14.7 Portal Frames 486 14.8 Effect of Axial Loading upon Collapse 497 14.9 Effect of Shear Force upon Collapse 500 14.10 Effect of Hardening upon Collapse 505 References 507 Exercises 507 Chapter 15 Dynamic Programming 511 15.1 Introduction 511 15.2 Single-Span Beam 511 15.3 Two-Span Beam 513 15.4 Three-Span Beam 515 15.5 Design Space 517 Reference 520 Exercises 520 Appendix A Mechanical Properties 521 A. 1 Non-Metals 521 A. 2 Metals and Alloys 522 References 524 Appendix B Plate Buckling Under Uniaxial Compression 525 B. 1 Wide and Slender Struts 525 B. 2 Plates with Supported Sides 527 B. 3 Inelastic Buckling 530 B. 4 Post-Buckling 533 References 534 Appendix C Plate Buckling Under Biaxial Compression and Shear 537 C. 1 Biaxial Compression 537 C. 2 Pure Shear 539 C.3 Inelastic Shear Buckling 541 References 541 Appendix D Secondary Buckling 543 D. 1 Buckling Modes 543 D. 2 Local Compressive Buckling 544 D. 3 Global Buckling 545 D. 4 Local Shear Buckling 547 References 547 Bibliography 549 Index 553
Subject Areas: Mechanical engineering & materials [TG]
