Mathematical Methods and Models in Composites 2nd Edition by Vladislav Mantić ISBN 9781800611870 1800611870

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ISBN 10: 1800611870
ISBN 13: 9781800611870
Author: Vladislav Mantić

Mathematical Methods and Models in Composites 2nd Edition Table of contents:

1. Micromechanical Modeling of Advanced Composites and Smart Composite Structures Using the Asymptotic Homogenization Method
1.1. Introduction
1.2. Asymptotic Homogenization Method
1.3. Unit-Cell Problems
1.4. Three-Dimensional Grid-Reinforced Composites
1.4.1. Examples of 3D grid-reinforced composite structures
1.5. Asymptotic Homogenization of Thin-Walled Composite Reinforced Structures
1.6. Generally Orthotropic Grid-Reinforced Composite Shell
1.6.1. Calculation of the effective elastic coefficients
1.7. Examples of Grid-Reinforced Composite Shells with Orthotropic Reinforcements
1.8. Sandwich Composite Shells with Cellular Cores
1.8.1. Examples of sandwich shells
1.9. Smart Composite Materials and Structures
1.9.1. Asymptotic homogenization of 3D smart composite materials
1.9.2. Asymptotic homogenization of smart composite shells and plates
1.10. Conclusion
References
2. Scaling Functions in Spatially Random Composites
2.1. Introduction
2.2. Conductivity of Random Polycrystals
2.2.1. The Hill–Mandel condition
2.2.2. Bounds on the conductivity
2.2.3. Scaling function in heat conduction
2.2.4. Some properties of and bounds on the scaling function
2.2.5. Numerical simulations
2.2.6. Constructing the scaling function
2.3. Conductivity of Planar Random Checkerboards
2.3.1. Governing equations
2.4. Elastic Properties of Random Polycrystals
2.4.1. The Hill–Mandel condition
2.4.2. Bounds on the elastic response
2.4.3. Elastic scaling function
2.5. Elastic Properties of Planar Random Checkerboards
2.6. Scaling in Inelastic and Nonlinear Materials
2.6.1. Thermoelasticity
2.6.2. Elasto-plasticity
2.6.3. Finite elasticity
2.6.4. Permeability of porous media
2.6.5. Comparative numerical results
2.7. Conclusions
Acknowledgments
References
3. Stroh-Like Formalism for General Thin-Laminated Plates and Its Applications
3.1. Introduction
3.2. Stroh-Like Formalism
3.3. Extended Stroh-Like Formalism — Hygrothermal Stresses
3.4. Expanded Stroh-Like Formalism — Electro-Elastic Laminates
3.5. Holes and Cracks
3.5.1. Holes in laminates under uniform stretching and bending moments
3.5.2. Holes in laminates under uniform heat flow and moisture transfer
3.5.3. Holes in electro-elastic laminates under uniform loads and charges
3.5.4. Cracks in laminates
3.6. Numerical Examples
3.6.1. Holes
3.6.2. Thermal environment
3.6.3. Electro-elastic coupling
3.6.4. Cracks
3.7. Conclusions
Acknowledgments
References
4. Classical, Refined, Zig-Zag, Layer-Wise Models and Best Theory Diagrams for Laminated Structures
4.1. Introduction
4.2. Who First Proposed a Zig-Zag Theory?
4.3. The Lekhnitskii–Ren Theory
4.4. The Ambartsumian–Whitney–Rath–Das Theory
4.5. The Reissner–Murakami–Carrera Theory
4.6. Remarks on the Theories
4.7. A Brief Discussion on Layer-Wise Theories
4.8. Best Theory Diagrams via the Axiomatic/Asymptotic Method
4.8.1. The axiomatic/asymptotic method
4.8.2. The Best Theory Diagram
4.9. CUF Shell Finite Elements
4.9.1. Geometry of cylindrical shells
4.9.2. MITC method
4.9.3. Governing equations
4.10. Numerical Examples
4.11. Best Theory Diagrams
4.11.1. Plates
4.11.2. Shells
4.12. Conclusions
References
5. A Modeling Framework for the Analysis of Instabilities and Delamination in Composite Shells
5.1. Introduction
5.1.1. Review of shell formulations
5.1.2. Finite element formulations for shells
5.1.3. Instabilities in thin-walled composite engineering systems
5.1.4. Overview
5.2. Shell Formulation: 7-Parameter Model
5.2.1. Differential geometry and fundamental equations
5.2.2. Three-dimensional shell parametrization
5.2.3. Solid shell parametrization
5.3. Constitutive Formulations for the Shell
5.3.1. Layered composite shells
5.3.2. Functionally graded isotropic shells
5.4. Cohesive Interface for Large Deformation Analysis
5.5. Computational Framework and Finite Element Formulation
5.5.1. Variational basis
5.5.2. Shell finite element discretization
5.5.2.1. Displacement formulation supplemented by EAS
5.5.2.2. Interpolation of the incompatible strains
5.5.2.3. The ANS method
5.5.3. Interface finite element discretization
5.6. Representative Applications
5.6.1. Postbuckling analysis of composite stiffened panel
5.6.2. Wrinkling–delamination analysis of composite systems
5.7. Concluding Remarks
Acknowledgments
References
6. Bifurcation of Elastic Multilayers
6.1. Introduction
6.2. Notations and Governing Equations
6.3. Uniaxial Tension/Compression of an Elastic Multilayer
6.3.1. Equations for a layer
6.3.1.1. Traction free at the external surface of the multilayer
6.3.1.2. Bonding to an elastic half-space at the external surface of the multilayer
6.3.1.3. Bonding to an undeformable substrate at the external surface of the multilayer
6.3.1.4. Bonding to an undeformable substrate with a compliant interface at the external surface of the multilayer
6.3.2. Bifurcation criterion
6.3.3. Results and discussion
6.3.3.1. Layer bonded to a half-space
6.3.3.2. Periodic multilayered structures
6.4. Bending of Elastic Multilayers with Imperfect Interfaces
6.4.1. Kinematics
6.4.2. Stress
6.4.3. Incremental bifurcations superimposed on finite bending of an elastic multilayered structure
6.4.4. An example: Bifurcation of a bilayer
6.4.5. Experiments on coated and uncoated rubber blocks under bending
6.5. Conclusions
Acknowledgments
References
7. Instabilities Associated with Loss of Ellipticity in Fiber-Reinforced Nonlinearly Elastic Solids
7.1. Introduction
7.2. Compressible Materials in Three Dimensions
7.2.1. Kinematics
7.2.2. Elasticity
7.2.3. Equilibrium and ellipticity considerations
7.2.4. Reinforcing models
7.3. Specialization to Plane Strain Deformations
7.3.1. Ellipticity of the reinforcing model F(I4)
7.3.1.1. Failure of ellipticity
7.3.2. Ellipticity of a hybrid reinforcing model
7.4. Incompressible Materials
7.4.1. Plane strain
7.5. Strong Discontinuities
7.5.1. Piecewise homogeneous deformation gradients
7.5.2. Energy considerations
7.5.3. Illustrations
7.5.3.1. Example 1: An orthogonal kink
7.5.3.2. Example 2: A weak kink
7.6. Concluding Remarks
References
8. Propagation of Rayleigh Waves in Anisotropic Media and an Inverse Problem in the Characterization of Initial Stress
8.1. Introduction
8.2. Basic Elasticity in Anisotropic Materials with Initial Stress
8.3. The Stroh Formalism for Dynamic Elasticity
8.4. Rayleigh Waves in Anisotropic Materials
8.5. Perturbation of the Phase Velocity of Rayleigh Waves in Prestressed Anisotropic Media When the Base Material is Orthotropic
8.6. An Inverse Problem on Recovery of Initial Stress
8.7. Perturbation of the Polarization Ratio of Rayleigh Waves in Prestressed Anisotropic Media When the Base Material is Orthotropic
Acknowledgments
References
9. Advanced Mathematical Models and Efficient Numerical Simulation in Composite Processes
9.1. Introduction
9.2. Reinforced Polymers
9.2.1. Fiber suspensions in Newtonian fluids
9.2.2. Fiber suspensions in non-Newtonian fluids
9.3. Multi-Physics in Laminates
9.3.1. PGD at a glance
9.3.2. Heat transfer in laminates
9.3.2.1. Computing R(x) from S(z)
9.3.2.2. Computing S(z) from R(x)
9.3.3. 3D RTM
9.3.4. The elastic problem defined in plate domains
9.3.5. 3D elastic problem in a shell domain
9.3.5.1. Shell representation
9.3.5.2. Weak form
9.3.5.3. In-plane–out-of-plane separated representation
9.3.6. Squeeze flow in composite laminates
9.3.6.1. Stokes model
9.3.6.2. Power-law fluid
9.3.6.3. Brinkman’s model
9.3.6.4. Squeeze flow of multiaxial laminates
9.3.7. Electromagnetic models in laminates
9.4. Coupled Physics at Interfaces
9.4.1. Surface representation
9.4.2. High-resolution numerical solution
9.4.3. Surface evolution during the in-situ consolidation
9.4.4. Consolidation simulation strategy
9.5. Conclusions
References
10. Modeling Fracture and Complex Crack Networks in Laminated Composites
10.1. Introduction: Damage Idealization and Scale
10.2. Crack Initiation and Propagation
10.2.1. Linear elastic fracture of composites
10.2.2. Cohesive laws
10.2.2.1. Length of the fracture process zone
10.2.2.2. Size effects
10.2.2.3. Softening law and the R-curve effect
10.2.2.4. Mixed-mode cohesive laws
10.3. Continuum Representation of Material Response
10.3.1. Distributed damage vs. localization of fracture
10.3.2. Idealization of damage modes in composite materials
10.3.3. Failure criteria and strength
10.3.4. Crack tunneling and in situ strength
10.3.5. Continuum damage models for composite materials
10.4. CDM: Limitations
10.5. Bridging the Gap between DDM and CDM
10.6. Regularized x-FEM (Rx-FEM) Framework
10.6.1. Matrix crack modeling using Rx-FEM
10.7. Rx-FEM Simulations
10.7.1. Transverse crack tension test
10.7.2. Effect of ply thickness
10.7.3. Internal delamination vs. edge delamination
10.8. Conclusions
Acknowledgments
References
11. Delamination and Adhesive Contacts, Their Mathematical Modeling and Numerical Treatment
11.1. Introduction
11.2. Concepts in Quasistatic Rate-Independent Evolution
11.3. Mathematical Concepts to Solve the System (11.4)
11.3.1. General weak solutions — Local solutions
11.3.2. Weak solutions conserving energy: Energetic solutions
11.3.3. Weak solutions of stress-driven types
11.4. Quasistatic Brittle Delamination, The Griffith Concept
11.5. Elastic-Brittle Delamination
11.5.1. The model and its asymptotics to brittle delamination
11.5.2. Numerical implementation
11.5.3. Illustrative examples
11.6. Various Refinements and Enhancements
11.6.1. Cohesive contacts
11.6.2. Delamination in Modes I, II and mixed modes
11.6.3. Multi-threshold delamination
11.6.4. Combinations with other inelastic processes in bulk
11.6.5. Another inelastic process on the surface: Friction
11.6.6. Dynamical adhesive contact in visco-elastic materials
11.6.7. Thermodynamics of adhesive contacts
11.7. Applications to Fiber-Reinforced Composites
11.8. Conclusion
Acknowledgments
References
12. Interaction of Cracks with Interfaces
12.1. Introduction
12.2. The Coupled Criterion
12.3. Matched Asymptotic Expansions
12.4. Application to the Crack Onset at a V-notch in a Homogeneous Material
12.5. Application to the Deflection of Transverse Cracks
12.6. The Cook and Gordon Mechanism
12.7. The Interface Crack Growing Along the Interface — Delamination
12.8. The Crack Kinking out of the Interface
12.9. The Interface Corner
12.10. Conclusion
References
13. Computational Procedure for Singularity Analysis of Anisotropic Elastic Multimaterial Corners — Applications to Composites and Their Joints
13.1. Introduction
13.2. Lekhnitskii–Stroh Formalism for Linear Elastic Anisotropic Materials
13.2.1. Basic equations
13.2.2. Sextic eigen-relation: Stroh orthogonality and closure relations
13.2.3. Representation of displacement and stress function vectors
13.3. Elastic Multimaterial Corner
13.3.1. Corner configuration
13.3.2. Boundary and interface conditions: Matrix formalism
13.3.2.1. Coordinate systems
13.3.2.2. Boundary condition matrices
13.3.2.3. Interface condition matrices
13.4. Singular Elastic Solution in a Single-Material Wedge: Transfer Matrix
13.4.1. Non-degenerate materials
13.4.2. Degenerate materials
13.4.3. Extraordinary degenerate materials
13.5. Characteristic System for the Singularity Analysis of an Elastic Multimaterial Corner
13.5.1. Transfer matrix for a multimaterial wedge
13.5.2. Characteristic system assembly
13.5.2.1. Open multimaterial corner
13.5.2.2. Closed multimaterial corner (periodic corner)
13.5.3. Solution of the characteristic system — Singular elastic solution
13.6. Evaluation of GSIFs
13.6.1. Least-squares fitting technique
13.6.2. Implementation, accuracy and robustness
13.7. Examples of Singularity Analysis
13.7.1. Transverse crack terminating at the interface in a [0/90]S laminate
13.7.2. Bimaterial corner in an adhesively bonded double-lap joint
13.7.2.1. Singularity analysis of a closed corner
13.7.2.2. Singularity analysis of a corner including an interface crack with sliding friction contact
13.8. Failure Criterion for a Multimaterial Closed Corner Based on Generalized Fracture Toughness
13.9. Removal of Stress Singularities in Bimaterial Joints
13.9.1. Tensile and shear strength in bimaterial samples
13.9.2. Removal or reduction of stress singularities associated to tabs bonding in standard composite testing
13.9.2.1. Compression test of thick composite laminates
13.9.2.2. Off-axis test of unidirectional composite materials
13.10. Conclusions
Acknowledgments
References
Index

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Tags: Vladislav Mantić, Mathematical Methods, Models, Composites