book

Modeling the Effect of Damage in Composite Structures: Simplified Approaches

May 2015

Intermediate to advanced

256 pages

7h 11m

English

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1.1 Introduction1.2 Notch Insensitivity1.3 ‘Complete’ Notch Sensitivity1.4 Notch Sensitivity of Composite MaterialsExercisesReferences
2.1 Stresses around Holes2.2 Using the Anisotropic Elasticity Solution to Predict Failure2.3 The Role of the Damage Zone Created Near a Hole2.4 Simplified Approaches to Predict Failure in Laminates with Holes: the Whitney–Nuismer Criteria2.5 Other Approaches to Predict Failure of a Laminate with a Hole2.6 Improved Whitney–Nuismer Approach2.7 Application: Finding the Stacking Sequence Which Results in Good OHT PerformanceExercisesReferences
3.1 Introduction3.2 Modelling a Crack in a Composite Laminate3.3 Finite-Width Effects3.4 Other Approaches for Analysis of Cracks in Composites3.5 Matrix CracksExercisesReferences
4.1 Introduction4.2 Relation to Inspection Methods and Criteria4.3 Modelling Different Structural Details in the Presence of Delaminations4.4 Strength of Materials Versus Fracture Mechanics – Use of Cohesive ElementsExercisesReferences
5.1 Sources of Impact and General Implications for Design5.2 Damage Resistance Versus Damage Tolerance5.3 Modelling Impact Damage as a Hole5.4 Modelling Impact Damage as a Delamination5.5 Impact Damage Modelled as a Region of Reduced Stiffness5.6 Application: Comparison of the Predictions of the Simpler Models with Test Results5.7 Improved Model for Impact Damage Analysed as a Region of Reduced StiffnessExercisesReferences

6.1 Introduction6.2 Needed Characteristics for an Analytical Model6.3 Models for the Degradation of the Residual Strength6.4 Model for the Cycles to Failure6.5 Residual Strength and Wear-Out Model Predictions Compared to Test Results6.6 A Proposal for the Complete Model: Accounting for Larger Scale DamageExercisesReferences