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Library | Item Barcode | Call Number | Material Type | Item Category 1 | Status |
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Searching... | 30000010237050 | TL699.C57 K37 2010 | Open Access Book | Book | Searching... |
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Summary
Summary
Design and Analysis of Composite Structures enables graduate students and engineers to generate meaningful and robust designs of complex composite structures. Combining analysis and design methods for structural components, the book begins with simple topics such as skins and stiffeners and progresses through to entire components of fuselages and wings.
Starting with basic mathematical derivation followed by simplifications used in real-world design, Design and Analysis of Composite Structures presents the level of accuracy and range of applicability of each method. Examples taken from actual applications are worked out in detail to show how the concepts are applied, solving the same design problem with different methods based on different drivers (e.g. cost or weight) to show how the final configuration changes as the requirements and approach change.
Provides a toolkit of analysis and design methods to most situations encountered in practice, as well as analytical frameworks and the means to solving them for tackling less frequent problems. Presents solutions applicable to optimization schemes without having to run finite element models at each iteration, speeding up the design process and allowing examination of several more alternatives than traditional approaches. Includes guidelines showing how decisions based on manufacturing considerations affect weight and how weight optimization may adversely affect the cost. Accompanied by a website at www.wiley.com/go/kassapoglou hosting lecture slides and solutions to the exercises for instructors.Table of Contents
About the Author | p. ix |
Series Preface | p. x |
Preface | p. xi |
1 Applications of Advanced Composites in Aircraft Structures | p. 1 |
References | p. 7 |
2 Cost of Composites: a Qualitative Discussion | p. 9 |
2.1 Recurring Cost | p. 10 |
2.2 Nonrecurring Cost | p. 18 |
2.3 Technology Selection | p. 20 |
2.4 Summary and Conclusions | p. 27 |
Exercises | p. 30 |
References | p. 30 |
3 Review of Classical Laminated Plate Theory | p. 33 |
3.1 Composite Materials: Definitions, Symbols and Terminology | p. 33 |
3.2 Constitutive Equations in Three Dimensions | p. 35 |
3.2.1 Tensor Transformations | p. 37 |
3.3 Constitutive Equations in Two Dimensions: Plane Stress | p. 39 |
Exercises | p. 52 |
References | p. 53 |
4 Review of Laminate Strength and Failure Criteria | p. 55 |
4.1 Maximum Stress Failure Theory | p. 57 |
4.2 Maximum Strain Failure Theory | p. 58 |
4.3 Tsai-Hill Failure Theory | p. 58 |
4.4 Tsai-Wu Failure Theory | p. 59 |
4.5 Other Failure Theories | p. 59 |
References | p. 60 |
5 Composite Structural Components and Mathematical Formulation | p. 63 |
5.1 Overview of Composite Airframe | p. 63 |
5.1.1 The Structural Design Process: The Analyst's Perspective | p. 64 |
5.1.2 Basic Design Concept and Process/Material Considerations for Aircraft Parts | p. 69 |
5.1.3 Sources of Uncertainty: Applied Loads, Usage and Material Scatter | p. 72 |
5.1.4 Environmental Effects | p. 75 |
5.1.5 Effect of Damage | p. 76 |
5.1.6 Design Values and Allowables | p. 78 |
5.1.7 Additional Considerations of the Design Process | p. 81 |
5.2 Governing Equations | p. 82 |
5.2.1 Equilibrium Equations | p. 82 |
5.2.2 Stress-Strain Equations | p. 84 |
5.2.3 Strain-Displacement Equations | p. 85 |
5.2.4 von Karman Anisotropic Plate Equations for Large Deflections | p. 86 |
5.3 Reductions of Governing Equations: Applications to Specific Problems | p. 91 |
5.3.1 Composite Plate Under Localized in-Plane Load | p. 92 |
5.3.2 Composite Plate Under Out-of-Plane Point Load | p. 103 |
5.4 Energy Methods | p. 106 |
5.4.1 Energy Expressions for Composite Plates | p. 107 |
Exercises | p. 113 |
References | p. 116 |
6 Buckling of Composite Plates | p. 119 |
6.1 Buckling of Rectangular Composite Plate under Biaxial Loading | p. 119 |
6.2 Buckling of Rectangular Composite Plate under Uniaxial Compression | p. 122 |
6.2.1 Uniaxial Compression, Three Sides Simply Supported, One Side Free | p. 124 |
6.3 Buckling of Rectangular Composite Plate under Shear | p. 127 |
6.4 Buckling of Long Rectangular Composite Plates under Shear | p. 129 |
6.5 Buckling of Rectangular Composite Plates under Combined Loads | p. 132 |
6.6 Design Equations for Different Boundary Conditions and Load Combinations | p. 138 |
Exercises | p. 141 |
References | p. 143 |
7 Post-Buckling | p. 145 |
7.1 Post-Buckling Analysis of Composite Panels under Compression | p. 149 |
7.1.1 Application: Post-Buckled Panel Under Compression | p. 157 |
7.2 Post-Buckling Analysis of Composite Plates under Shear | p. 159 |
7.2.1 Post-buckling of Stiffened Composite Panels under Shear | p. 163 |
7.2.2 Post-buckling of Stiffened Composite Panels under Combined Uniaxial and Shear Loading | p. 171 |
Exercises | p. 174 |
References | p. 177 |
8 Design and Analysis of Composite Beams | p. 179 |
8.1 Cross-section Definition Based on Design Guidelines | p. 179 |
8.2 Cross-sectional Properties | p. 182 |
8.3 Column Buckling | p. 188 |
8.4 Beam on an Elastic Foundation under Compression | p. 189 |
8.5 Crippling | p. 194 |
8.5.1 One-Edge-Free (OEF) Crippling | p. 196 |
8.5.2 No-Edge-Free (NEF) Crippling | p. 200 |
8.5.3 Crippling under Bending Loads | p. 202 |
8.5.4 Crippling of Closed-Section Beams | p. 207 |
8.6 Importance of Radius Regions at Flange Intersections | p. 207 |
8.7 Inter-rivet Buckling of Stiffener Flanges | p. 210 |
8.8 Application: Analysis of Stiffeners in a Stiffened Panel under Compression | p. 215 |
Exercises | p. 218 |
References | p. 222 |
9 Skin-Stiffened Structure | p. 223 |
9.1 Smearing of Stiffness Properties (Equivalent Stiffness) | p. 223 |
9.1.1 Equivalent Membrane Stiffnesses | p. 223 |
9.1.2 Equivalent Bending Stiffnesses | p. 225 |
9.2 Failure Modes of a Stiffened Panel | p. 227 |
9.2.1 Local Buckling (Between Stiffeners) Versus Overall Panel Buckling (the Panel Breaker Condition) | p. 228 |
9.2.2 Skin-Stiffener Separation | p. 236 |
9.3 Additional Considerations for Stiffened Panels | p. 251 |
9.3.1 'Pinching' of Skin | p. 251 |
9.3.2 Co-Curing Versus Bonding Versus Fastening | p. 251 |
Exercises | p. 253 |
References | p. 258 |
10 Sandwich Structure | p. 259 |
10.1 Sandwich Bending Stiffnesses | p. 260 |
10.2 Buckling of Sandwich Structure | p. 262 |
10.2.1 Buckling of Sandwich Under Compression | p. 262 |
10.2.2 Buckling of Sandwich Under Shear | p. 264 |
10.2.3 Buckling of Sandwich Under Combined Loading | p. 265 |
10.3 Sandwich Wrinkling | p. 265 |
10.3.1 Sandwich Wrinkling Under Compression | p. 265 |
10.3.2 Sandwich Wrinkling Under Shear | p. 276 |
10.3.3 Sandwich Wrinkling Under Combined Loads | p. 276 |
10.4 Sandwich Crimping | p. 278 |
10.4.1 Sandwich Crimping Under Compression | p. 278 |
10.4.2 Sandwich Crimping Under Shear | p. 278 |
10.5 Sandwich Intracellular Buckling (Dimpling) under Compression | p. 278 |
10.6 Attaching Sandwich Structures | p. 279 |
10.6.1 Core Ramp-Down Regions | p. 280 |
10.6.2 Alternatives to Core Ramp-Down | p. 282 |
Exercises | p. 284 |
References | p. 288 |
11 Good Design Practices and Design 'Rules of Thumb' | p. 289 |
11.1 Lay up/Stacking Sequence-related | p. 289 |
11.2 Loading and Performance-related | p. 290 |
11.3 Guidelines Related to Environmental Sensitivity and Manufacturing Constraints | p. 292 |
11.4 Configuration and Layout-related | p. 292 |
Exercises | p. 294 |
References | p. 295 |
Index | p. 297 |