de
en
Schliessen
Detailsuche
Bibliotheken
Projekt
Impressum
Datenschutz
Schliessen
Publizieren
Besondere Sammlungen
Digitalisierungsservice
Hilfe
Impressum
Datenschutz
zum Inhalt
Detailsuche
Schnellsuche:
OK
Ergebnisliste
Titel
Titel
Inhalt
Inhalt
Seite
Seite
Im Werk suchen
A multi-mechanism model for cutting simulations combining asymmetric effects and gradient phase transformations / von M.Sc. Chun Cheng. Paderborn, 2019
Inhalt
1 Introduction
1.1 Motivation
1.2 State of the art
1.3 Goals
1.4 Structure
2 Basic equations for continuum mechanics and volume changes for a multi-phase system
2.1 Kinematics
2.2 Volume changes due to pressure, temperature and phase fraction
2.3 Stress tensors
2.4 Balance equations
3 A multi-mechanism model for cutting simulations combining visco-plastic asymmetry and TRIP
3.1 Introduction
3.2 A thermodynamic framework for asymmetric visco-plasticity and phase transformations
3.2.1 Constitutive framework
3.2.2 Heat-conduction equation
3.3 A prototype model for cutting processes
3.3.1 Helmholtz energy
3.3.2 Thermodynamic forces
3.3.3 A yield function of Johnson-Cook type
3.3.4 Evolution equations for visco-plasticity
3.3.5 A flow rule for transformation plasticity
3.3.6 Evolution of phase fractions
3.3.7 Thermodynamic consistency
3.3.8 Interpretation as a multi-mechanism model
3.3.9 Special form of the heat-conduction equation
3.3.10 Summary of constitutive equations
3.4 Numerical implementation
3.4.1 Integration scheme
3.4.2 Spectral decomposition
3.4.3 Local iteration
3.4.4 Spatial algorithmic tangent operator
3.5 Representative examples
3.5.1 Steel AISI 52100 under tension, compression and shear as well as phase-transformation
3.5.2 Simulation of a cutting process
3.6 Summary
4 Extension of the multi-mechanism model with a gradient of the austenite phase fraction based on the concept of generalized stresses
4.1 Introduction
4.2 A thermodynamic framework based on the concept of generalized stresses
4.2.1 The concept of generalized stresses - general setting
4.2.2 Constitutive framework
4.2.3 Heat-conduction equation
4.3 A prototype model for cutting processes
4.3.1 Helmholtz energy
4.3.2 Evolution equations
4.3.3 Thermodynamic consistency
4.3.4 Summary of constitutive equations
4.4 Numerical implementation on a finite element level
4.4.1 Weak formations
4.4.2 Discretization
4.4.3 Finite element residuals
4.5 Representative examples
4.5.1 Mechanical tests for identifying hardness dependent plasticity
4.5.2 Simulation of a cutting process
4.6 Summary
5 Summary and Outlook
5.1 Summary
5.2 Outlook
Appendix
Bibliography
Die detaillierte Suchanfrage erfordert aktiviertes Javascript.