Chapter 1: Phase-Field Damage Modeling in Generalized Mechanics by using a Mixed Finite Element Method (FEM)
1.1 Introduction to Standard Phase-Field Formulation
1.2 Extension to Generalized Mechanics
1.3 Strain Gradient Parameters
1.4 Numerical Implementation and Results
1.5 Conclusion
References
Chapter 2: Creep-Damage Processes in Cyclic Loaded Double Walled Structures
2.1 Introduction
2.2 Constitutive Equations
2.2.1 Static Loading
2.2.2 Cyclic Loading. Stresses Lower the Yield Limit
2.2.3 Cyclic Load. Overloading with Transition to Plastic Deformation
2.3 Problem Statement
2.4 Comparison Between Data of Direct Approach and Use of Averaged Function ????
2.5 Numerical Simulation of the Cyclic Creep-damage in DWTC System Model
2.5.1 Description of the Calculation Model
2.5.2 Determination of the Temperature and Stress Field in the Blade
2.5.3 Creep Calculations for a Two-dimensional Model of a Blade Made of Nickel Based Alloy
2.5.4 Creep Calculations for a Two-dimensional Model of a Blade Made of an Inconel X Alloy
2.6 Conclusions
References
Chapter 3: Creep Mechanics – Some Historical Remarks and New Trends
3.1 Starting Point - the Early Period of Creep Mechanics
3.2 IUTAM Symposia and Other Events Devoted to Problems in Creep Mechanics
3.3 Research Directions and Magdeburg’s Contributions
3.3.1 Kachanov-Rabotnov Approach and Mechanism-Based Models
3.3.2 Non-Classical Creep
3.3.3 Benchmark Tests for Creep Problems
3.3.4 Rheological Models
3.3.5 Thesis
3.4 Outlook
References
Chapter 4: Various State-of-the-Art Methods for Creep Evaluation of Power Plant Components in a Wide Load and Temperature Range
4.1 Introduction
4.2 Applied Creep Models
4.2.1 Norton-Bailey Equation
4.2.2 Modified Garofalo Eequation
4.2.3 Constitutive Model
4.3 Structural Analysis
4.3.1 Verification of the Creep Models Based on Creep Tests
4.3.2 Relaxation Test with Cube-one-Element Model
4.3.3 Pipe Benchmark FE Model
4.3.4 Performance Evaluation of User-Creep Routines
4.3.5 Temperature Interpolation for Norton-Bailey Creep Equation
4.3.6 Isothermal Steam Turbine Valve FE Model with a Constant Loading
4.4 Conclusions
References
Chapter 5: Creep and Irradiation Effects in Reactor Vessel Internals
5.1 Introduction
5.2 Problem Statement and Description of Solution Approaches
5.3 Constitutive Equations
5.3.1 Materials with Isotropy of Properties
5.3.2 Materials with Transversal Isotropy of Properties
5.4 Deformation, Damage Accumulation and Fracture in RVI
5.4.1 Creep of T-joint of Tubes
5.4.2 Damage Accumulation and Fracture of Reactor Fuel Element
5.4.3 Transversal-Isotropic Creep-Damage Behaviour of Aluminium Notched Plate
5.5 Conclusions
References
Chapter 6: Analysis of Damage and Fracture in Anisotropic Sheet Metals Based on Biaxial Experiments
6.1 Introduction
6.2 Constitutive Framework
6.3 Numerical Simulations and Results
6.4 Conclusions
References
Chapter 7: Effect of Physical Aging on the Flexural Creep in 3D Printed Thermoplastic
7.1 Introduction
7.2 Theoretical Background
7.2.1 Viscoelasticity of Thermoplastics
7.2.2 Physical Aging
7.3 Material and Methods
7.3.1 Test Specimens
7.3.2 Sequential Creep Tests
7.3.3 Long Term Creep Test
7.4 Experimental Results
7.4.1 Sequential Creep Tests
7.4.2 Long Term Creep Test
7.5 Discussion
References
Chapter 8: Development of a Microstructure-Based Finite Element Model of Thermomechanical Response of a Fully Metallic Composite Phase Change Material
8.1 Introduction
8.2 Microstructure-Based FE model of a Al-Sn C-PCM with Free Expansion
8.3 Results and Discussion
8.4 Final Remarks
References
Chapter 9: The Effect of Dynamic Loads on the Creep of Geomaterials
9.1 Introduction
9.2 Materials and Methods
9.2.1 Materials
9.2.2 Methods
9.3 Results and Discussion
9.4 Conclusion
References
Chapter 10: A Novel Simulation Method for Phase Transition of Single Crystal Ni based Superalloys in Elevated Temperature Creep Regions via Discrete Cosine Transform and Maximum Entropy Method
10.1 Introduction
10.2 Materials and Experiments
10.2.1 A Single Crystal Ni Based Superalloy, CMSX-4
10.2.2 Creep Tests
10.2.3 Two Dimensional Discrete Cosine Transform
10.2.4 Maximum Entropy Method
10.3 Estimation of Phase Transition and Results
10.4 Discussion
10.5 Conclusion
References
Chapter 11: Anisotropic Creep Analysis of Fiber Reinforced Load Point Support Structures for Thermoplastic Sandwich Panels
11.1 Introduction
11.2 Material Model
11.2.1 Basic One-Dimensional Formulation
11.2.2 Generalization to Three Dimensions
11.2.3 Unidirectionally Fiber Reinforced Thermoplastics
11.2.4 Discontinuously Fiber Reinforced Thermoplastics
11.3 Experimental Investigation
11.3.1 Coupon Experiments
11.3.2 Structural Experiments
11.4 Multiscale Simulation
11.5 Results
11.5.1 Parameter Identification on Coupon Experiments
11.5.2 Validation on Structural Level
11.6 Summary and Conclusion
References
Chapter 12: Time-Swelling Superposition Principle for the Linear Viscoelastic Properties of Polyacrylamide Hydrogels
12.1 Introduction
12.2 Experiment
12.2.1 Materials
12.2.2 Mixed Solvents for Transient Equilibrium Swelling
12.2.3 Measurement of Swelling
12.2.4 Measurement of Dynamic Moduli
12.3 Experimenta Results
12.3.1 Transient Equilibrium Swelling
12.3.2 Linear Viscoelastic Behavior
12.4 Swelling–Dependent Linear Viscoelasticity
12.4.1 Model Formulation
12.4.2 Time-Swelling Superpostion Principle
12.5 Discussion
12.5.1 Master Curves of Dynamic Moduli
12.5.2 Swelling Dependence of Linear Viscoelastic Properties
12.5.3 Frequency Dependence of Complex Shear Moduli
12.6 Conclusion
Appendix A: Validity for Transient Equilibrium Swelling Using Ethanol
Appendix B: Experimental Data
References
Chapter 13: Application of Nonlinear Viscoelastic Material Models for the Shrinkage and Warpage Analysis of Blow Molded Parts
13.1 Introduction
13.2 Material Models
13.2.1 Linear Viscoelastic Material Model
13.2.2 Abaqu
