Modeling the Effect of Damage in Composite Structures : Simplified Approaches.

Cover -- Title Page -- Copyright -- Contents -- Series Preface -- Preface -- Chapter 1 Damage in Composite Structures: Notch Sensitivity -- 1.1 Introduction -- 1.2 Notch Insensitivity -- 1.3 'Complete' Notch Sensitivity -- 1.4 Notch Sensitivity of Composite Materials -- Exercises -- References -- Chapter 2 Holes -- 2.1 Stresses around Holes -- 2.2 Using the Anisotropic Elasticity Solution to Predict Failure -- 2.3 The Role of the Damage Zone Created Near a Hole -- 2.4 Simplified Approaches to Predict Failure in Laminates with Holes: the Whitney-Nuismer Criteria -- 2.5 Other Approaches to Predict Failure of a Laminate with a Hole -- 2.6 Improved Whitney-Nuismer Approach -- 2.7 Application: Finding the Stacking Sequence Which Results in Good OHT Performance -- Exercises -- References -- Chapter 3 Cracks -- 3.1 Introduction -- 3.2 Modelling a Crack in a Composite Laminate -- 3.3 Finite-Width Effects -- 3.4 Other Approaches for Analysis of Cracks in Composites -- 3.5 Matrix Cracks -- Exercises -- References -- Chapter 4 Delaminations -- 4.1 Introduction -- 4.2 Relation to Inspection Methods and Criteria -- 4.3 Modelling Different Structural Details in the Presence of Delaminations -- 4.3.1 Buckling of a Through-Width Delaminating Layer -- 4.3.2 Buckling of an Elliptical Delaminating Layer -- 4.3.3 Application-Buckling of an Elliptical Delamination under Combined Loads -- 4.3.4 Onset of Delamination at a Straight Free Edge of a Composite Laminate -- 4.3.5 Delamination at a Flange-Stiffener Interface of a Composite Stiffened Panel -- 4.3.6 Double Cantilever Beam and End Notch Flexure Specimen -- 4.3.7 The Crack Closure Method -- 4.4 Strength of Materials Versus Fracture Mechanics-Use of Cohesive Elements -- 4.4.1 Use of Cohesive Elements -- Exercises -- References -- Chapter 5 Impact -- 5.1 Sources of Impact and General Implications for Design.

5.2 Damage Resistance Versus Damage Tolerance -- 5.3 Modelling Impact Damage as a Hole -- 5.4 Modelling Impact Damage as a Delamination -- 5.5 Impact Damage Modelled as a Region of Reduced Stiffness -- 5.6 Application: Comparison of the Predictions of the Simpler Models with Test Results -- 5.6.1 Modelling BVID as a Hole -- 5.6.2 Modelling BVID as a Single Delamination -- 5.6.3 Modelling BVID as an Elliptical Inclusion of Reduced Stiffness -- 5.6.4 Comparisons of Analytical Predictions to Test Results-Sandwich Laminates -- 5.7 Improved Model for Impact Damage Analysed as a Region of Reduced Stiffness -- 5.7.1 Type and Extent of Damage for Given Impact Energy -- 5.7.2 Model for Predicting CAI Strength -- Exercises -- References -- Chapter 6 Fatigue Life of Composite Structures: Analytical Models -- 6.1 Introduction -- 6.2 Needed Characteristics for an Analytical Model -- 6.3 Models for the Degradation of the Residual Strength -- 6.3.1 Linear Model -- 6.3.2 Nonlinear Model -- 6.4 Model for the Cycles to Failure -- 6.4.1 Extension to Spectrum Loading -- 6.5 Residual Strength and Wear-Out Model Predictions Compared to Test Results -- 6.5.1 Residual Strength Predictions Compared to Test Results -- 6.5.2 Cycles to Failure Predictions Compared to Test Results (Constant Amplitude) -- 6.5.3 Cycles to Failure Predictions Compared to Test Results (Spectrum Loading) -- 6.6 A Proposal for the Complete Model: Accounting for Larger Scale Damage -- 6.6.1 First Cycle, Tension Portion -- 6.6.2 First Cycle, Compression Portion -- 6.6.3 Subsequent Load Cycles -- 6.6.4 Discussion -- 6.6.5 Application: Tension-Compression Fatigue of Unidirectional Composites -- 6.6.6 Application: Tension-Tension Fatigue of Cross-Ply Laminates -- Exercises -- References -- Chapter 7 Effect of Damage in Composite Structures: Summary and Useful Design Guidelines -- Index.

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Electronic reproduction. Ann Arbor, Michigan : ProQuest Ebook Central, 2024. Available via World Wide Web. Access may be limited to ProQuest Ebook Central affiliated libraries.