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Meeting Materials Science & Technology 2019
Symposium Formability and Fracture of Metal Sheets
Presentation Title A Method to Predict the Ductile Fracture of Metal Sheets under Complex Plane Stress
Author(s) Jian Fang, Jian-wei Zhang
On-Site Speaker (Planned) Jian Fang
Abstract Scope Advanced high strength steels and some lightweight alloy sheets (Al, Mg) have been widely used in the automotive industry to manufacture the car body or functional components, satisfying the demands on reduced weight design. Under the extreme service condition like crash for passenger car, the functional structural components made from the above metal sheets usually undergo the complex plane stress, including shear, tension and bulge etc. The material resistance to ductile fracture contributed by its ultimate plastic deformation could not be simply estimated by the conventional stress-strain relationship from uniaxial tensile tests. In the present work, a method to analytically determine the Mohr-Coulomb fracture criterion for sheets, confined by the von-Mises yielding model was introduced. Thereafter the equivalent fracture strain of the sheets under all relative plane-stress states (triaxility) can be predicted, through DIC equipped tensile test upon two specimens, one shear and one tension another.
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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