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Design and Analysis of Composite Structures enables graduatestudents and engineers to generate meaningful and robust designs ofcomplex composite structures. Combining analysis and design methodsfor structural components, the book begins with simple topics suchas skins and stiffeners and progresses through to entire componentsof fuselages and wings. Starting with basic mathematical derivation followed bysimplifications used in real-world design, Design and Analysis ofComposite Structures presents the level of accuracy and range ofapplicability of each method. Examples taken from…mehr

Produktbeschreibung
Design and Analysis of Composite Structures enables graduatestudents and engineers to generate meaningful and robust designs ofcomplex composite structures. Combining analysis and design methodsfor structural components, the book begins with simple topics suchas skins and stiffeners and progresses through to entire componentsof fuselages and wings. Starting with basic mathematical derivation followed bysimplifications used in real-world design, Design and Analysis ofComposite Structures presents the level of accuracy and range ofapplicability of each method. Examples taken from actualapplications are worked out in detail to show how the concepts areapplied, solving the same design problem with different methodsbased on different drivers (e.g. cost or weight) to show how thefinal configuration changes as the requirements and approachchange. * Provides a toolkit of analysis and design methods to mostsituations encountered in practice, as well as analyticalframeworks and the means to solving them for tackling less frequentproblems. * Presents solutions applicable to optimization schemes withouthaving to run finite element models at each iteration, speeding upthe design process and allowing examination of several morealternatives than traditional approaches. * Includes guidelines showing how decisions based onmanufacturing considerations affect weight and how weightoptimization may adversely affect the cost. * Accompanied by a website at www.wiley.com/go/kassapoglouhosting lecture slides and solutions to the exercises forinstructors.

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  • Produktdetails
  • Verlag: John Wiley & Sons
  • Seitenzahl: 328
  • Erscheinungstermin: 29.08.2010
  • Englisch
  • ISBN-13: 9780470972717
  • Artikelnr.: 37301294
Autorenporträt
Christos Kassapoglou is Professor of Aerospace Structures & Materials at Delft University of Technology, The Netherlands.
Inhaltsangabe
Preface 1. Applications of advanced composites in aircraft structures References 2. Cost of Composites- A qualitative discussion 2.1 Recurring cost 2.2 Non-recurring cost 2.3 Technology selection 2.4 Summary and conclusions Exercises References 3. Review of Classical Laminated-Plate Theory 3.1 Composite Materials - Definitions, symbology and terminology 3.2 Constitutive equations in three dimensions 3.3 Constitutive equations in two dimensions - Plane stress Exercises References 4. Review of laminate strength and failure criteria 4.1 Maximum stress failure theory 4.2 Maximum strain failure theory 4.3 Tsai-Hill failure theory 4.4 Tsai-Wu failure theory 4.5 Other failure theories References 5. Composite structural components and mathematical formulation 5.1 Overview of composite airframe 5.2 Governing equations 5.3 Reductions of governing equations - Applications to specific problems 5.4 Energy methods Exercises References 6. Buckling of composite plates 6.1 Buckling of rectangular composite plate under biaxial loading 6.2 Buckling of rectangular composite plate under uniaxial compression 6.3 Buckling of rectangular composite plate under shear 6.4 Buckling of long rectangular composite plates under shear 6.5 Buckling of rectangular composite plates under combined loads 6.6 Design equations for different boundary conditions and load combinations Exercises References 7. Post-buckling 7.1 Post-buckling analysis of composite panels under compression 7.2 Post-buckling analysis of composite plates under shear Exercises References 8. Design and analysis of composite beams 8.1 Cross-section definition based on design guidelines 8.2 Cross-sectional properties 8.3 Column buckling 8.4 Beam on elastic foundation under compression 8.5 Crippling 8.6 Importance of radius regions at flange intersections 8.7 Inter-rivet buckling of stiffener flanges 8.8 Application - Analysis of stiffener in a stiffened panel under compression Exercises References 9. Skin-stiffened structure 9.1 Smearing of stiffness properties (equivalent stiffness) 9.2 Failure modes of a stiffened panel 9.3 Additional considerations of stiffened panels Exercises References 10. Sandwich structure 10.1 Sandwich bending stiffness 10.2 Buckling of sandwich structure 10.3 Sandwich wrinkling 10.4 Sandwich crimping 10.5 Sandwich intra-cellular buckling (dimpling) under compression 10.6 Attaching sandwich structures Exercises References 11. Good Design practices and Design "rules of thumb" Exercises References Index

About the Author xi Series Preface xiii Preface to First Edition xv Preface to Second Edition xix 1 Applications of Advanced Composites in Aircraft Structures 1 References 7 2 Cost of Composites: a Qualitative Discussion 9 2.1 Recurring Cost 10 2.2 Nonrecurring Cost 18 2.3 Technology Selection 20 2.4 Summary and Conclusions 27 Exercises 30 References 31 3 Review of Classical Laminated Plate Theory 33 3.1 Composite Materials: Definitions, Symbols and Terminology 33 3.2 Constitutive Equations in Three Dimensions 35 3.2.1 Tensor Transformations 38 3.3 Constitutive Equations in Two Dimensions: Plane Stress 40 Exercises 52 References 53 4 Review of Laminate Strength and Failure Criteria 55 4.1 Maximum Stress Failure Theory 57 4.2 Maximum Strain Failure Theory 58 4.3 Tsai
Hill Failure Theory 58 4.4 Tsai
Wu Failure Theory 59 4.5 Puck Failure Theory 59 4.6 Other Failure Theories 61 References 62 5 Composite Structural Components and Mathematical Formulation 65 5.1 Overview of Composite Airframe 65 5.1.1 The Structural Design Process: The Analyst's Perspective 66 5.1.2 Basic Design Concept and Process/Material Considerations for Aircraft Parts 71 5.1.3 Sources of Uncertainty: Applied Loads, Usage and Material Scatter 74 5.1.3.1 Knowledge of Applied Loads 75 5.1.3.2 Variability in Usage 75 5.1.3.3 Material Scatter 75 5.1.4 Environmental Effects 77 5.1.5 Effect of Damage 78 5.1.6 Design Values and Allowables 80 5.1.7 Additional Considerations of the Design Process 83 5.2 Governing Equations 84 5.2.1 Equilibrium Equations 84 5.2.2 Stress
Strain Equations 86 5.2.3 Strain
Displacement Equations 87 5.2.4 von Karman Anisotropic Plate Equations for Large Deflections 88 5.3 Reductions of Governing Equations: Applications to Specific Problems 94 5.3.1 Composite Plate under Localized In
Plane Load 94 5.3.2 Composite Plate under Out
of
Plane Point Load 105 5.4 Energy Methods 108 5.4.1 Energy Expressions for Composite Plates 109 5.4.1.1 Internal Strain Energy U 110 5.4.1.2 External Work W 113 Exercises 115 References 122 6 Buckling of Composite Plates 125 6.1 Buckling of Rectangular Composite Plate under Biaxial Loading 125 6.2 Buckling of Rectangular Composite Plate under Uniaxial Compression 129 6.2.1 Uniaxial Compression, Three Sides Simply Supported, One Side Free 131 6.3 Buckling of Rectangular Composite Plate under Shear 133 6.4 Buckling of Long Rectangular Composite Plates under Shear 136 6.5 Buckling of Rectangular Composite Plates under Combined Loads 138 6.6 Design Equations for Different Boundary Conditions and Load Combinations 145 Exercises 145 References 152 7 Post
Buckling 153 7.1 Post
Buckling Analysis of Composite Panels under Compression 157 7.1.1 Application: Post
Buckled Panel under Compression 165 7.2 Post
Buckling Analysis of Composite Plates under Shear 168 7.2.1 Post
Buckling of Stiffened Composite Panels under Shear 172 7.2.1.1 Application: Post
Buckled Stiffened Fuselage Skin under Shear 177 7.2.2 Post
Buckling of Stiffened Composite Panels under Combined Uniaxial and Shear Loading 180 Exercises 181 References 187 8 Design and Analysis of Composite Beams 189 8.1 Cross
Section Definition Based on Design Guidelines 189 8.2 Cross
Sectional Properties 193 8.3 Column Buckling 199 8.4 Beam on an Elastic Foundation under Compression 200 8.5 Crippling 205 8.5.1 One
Edge
Free (OEF) Crippling 207 8.5.2 No
Edge
Free (NEF) Crippling 211 8.5.3 Crippling under Bending Loads 214 8.5.3.1 Application: Stiffener Design under Bending Loads 215 8.5.4 Crippling of Closed
Section Beams 219 8.6 Importance of Radius Regions at Flange Intersections 219 8.7 Inter
Rivet Buckling of Stiffener Flanges 222 8.8 Application: Analysis of Stiffeners in a Stiffened Panel under Compression 227 Exercises 230 References 235 9 Skin
Stiffened Structure 237 9.1 Smearing of Stiffness Properties (Equivalent Stiffness) 237 9.1.1 Equivalent Membrane Stiffnesses 237 9.1.2 Equivalent Bending Stiffnesses 239 9.2 Failure Modes of a Stiffened Panel 241 9.2.1 Local Buckling (between Stiffeners) versus Overall Panel Buckling (the Panel Breaker Condition) 242 9.2.1.1 Global Buckling = Local Buckling (Compression Loading) 243 9.2.1.2 Stiffener Buckling = PB × Buckling of Skin between Stiffeners (Compression Loading) 246 9.2.1.3 Example 249 9.2.2 Skin
Stiffener Separation 250 9.3 Additional Considerations for Stiffened Panels 265 9.3.1 'Pinching' of Skin 265 9.3.2 Co
curing versus Bonding versus Fastening 266 Exercises 267 References 272 10 Sandwich Structure 275 10.1 Sandwich Bending Stiffnesses 276 10.2 Buckling of Sandwich Structure 278 10.2.1 Buckling of Sandwich under Compression 278 10.2.2 Buckling of Sandwich under Shear 280 10.2.3 Buckling of Sandwich under Combined Loading 281 10.3 Sandwich Wrinkling 281 10.3.1 Sandwich Wrinkling under Compression 282 10.3.2 Sandwich Wrinkling under Shear 293 10.3.3 Sandwich Wrinkling under Combined Loads 293 10.4 Sandwich Crimping 295 10.4.1 Sandwich Crimping under Compression 295 10.4.2 Sandwich Crimping under Shear 295 10.5 Sandwich Intracellular Buckling (Dimpling) under Compression 296 10.6 Attaching Sandwich Structures 296 10.6.1 Core Ramp
Down Regions 297 10.6.2 Alternatives to Core Ramp
Down 299 Exercises 301 References 306 11 Composite Fittings 309 11.1 Challenges in Creating Cost
and Weight
Efficient Composite Fittings 309 11.2 Basic Fittings 311 11.2.1 Clips 311 11.2.1.1 Tension Clips 311 11.2.1.2 Shear Clips 322 11.2.2 Lugs 328 11.2.2.1 Lug under Axial Loads 328 11.2.2.2 Lug under Transverse Loads 333 11.2.2.3 Lug under Oblique (Combined) Loads 337 11.3 Other Fittings 339 11.3.1 Bathtub Fittings 339 11.3.2 Root Fittings 340 Exercises 340 References 341 12 Good Design Practices and Design 'Rules of Thumb' 343 12.1 Layup/Stacking Sequence
related 343 12.2 Loading and Performance
related 344 12.3 Guidelines Related to Environmental Sensitivity and Manufacturing Constraints 345 12.4 Configuration and Layout
related 347 Exercises 348 References 349 13 Application
Design of a Composite Panel 351 13.1 Monolithic Laminate 351 13.2 Stiffened Panel Design 362 13.3 Sandwich Design 373 13.4 Cost Considerations 381 13.5 Comparison and Discussion 382 References 385 Index 387