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Meeting Materials Science & Technology 2019
Symposium Formability and Fracture of Metal Sheets
Presentation Title Anisotropic and Time-dependent Continuum Damage Coupled Plasticity Model for Predicting Ductile Fracture of AA 6xxx
Author(s) Mustapha Makki, Georges Ayoub, Jackie Ayoub, Andrey Linich, George Luckey, Ghassan Kridli
On-Site Speaker (Planned) Mustapha Makki
Abstract Scope An accurate characterization of the fracture strain under different stress states is essential for designing metal formed structures. General stress states may be characterized by two independent parameters; the stress triaxiality ratio and the Lode angle. When both parameters remain constant throughout the strain history, the loading is said to be proportional. In this work, the fracture surface of an AA 6xxx series sheets is constructed in the space of the equivalent plastic strain, the stress triaxiality and the Lode angle. A hybrid method combining experimental (proportional loading) and FEM simulations is used for the fracture surface calibration. The mechanical and damage behavior of ductile metal is captured using an anisotropic and time-dependent continuum damage-coupled plasticity that is implemented as user subroutine. The predictive capability of the model with embedded damage cumulative law is validated on non-proportional loading experiments.
Proceedings Inclusion? Definite: At-meeting proceedings

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Method to Predict the Ductile Fracture of Metal Sheets under Complex Plane Stress
Anisotropic and Time-dependent Continuum Damage Coupled Plasticity Model for Predicting Ductile Fracture of AA 6xxx
Behavior of Quenched-and-Partitioned Steels Deformed at Elevated Temperatures
Biaxial Tensile Testing Using Laser-deposited Cruciform and Its Extension to Non-proportional Loading
Deformation Mode Effects on Austenite Stability of Quenched-and-Partitioned Steel Measured via X-ray Diffraction and Electron Backscattered Diffraction
Distortional Anisotropic Hardening Model for Describing Complex Bauschinger and Transient Effects in Metal Forming Simulations
Edge Stretchability of Hot Rolled High-strength Low-alloy Steel
Effect of Ultrasonic-assisted Two-point Incremental Sheet Forming (UA-TPIF) on Surface Finish
Mechanical Behavior of Ni and Cr added Bainite/ Martensite Multiphase Steels
Mitigation of Edge Cracking during Accumulative Roll Bonding of Aluminum Alloys
P3-90: Prediction Method of Voids Distribution in the Punched Surface of the Spheroidizing Annealed Medium Carbon Steel Sheet by the Scrap
Stress-strain Response in the Early Stage of Hydraulic Bulge Testing
Study of GP-zone/MgZn2 Precipitation Coupled with Deformation in Al-Zn-Mg-Cu to Overcome the Strength-ductility Paradox
The Influence of Phase Constituents on Hole Expansion Capacity of Multi-phase Steels

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