A unified physically based crystal plasticity model for FCC metals over a wide range of temperatures and strain rates

2013 ◽  
Vol 564 ◽  
pp. 431-441 ◽  
Author(s):  
Haiming Zhang ◽  
Xianghuai Dong ◽  
Dapeng Du ◽  
Qian Wang
Keyword(s):  
Crystal Plasticity ◽  
Strain Rates ◽  
Plasticity Model ◽  
Fcc Metals ◽  
Crystal Plasticity Model ◽  
Wide Range ◽  
Physically Based

Multi-level direct crystal plasticity model of polycrystalline specimen: Grains generation

2021 ◽  
Author(s):  
Artyom A. Tokarev ◽  
Anton Yu. Yants ◽  
Alexey I. Shveykin ◽  
Nikita S. Kondratiev
Keyword(s):  
Crystal Plasticity ◽  
Plasticity Model ◽  
Polycrystalline Specimen ◽  
Crystal Plasticity Model ◽  
Multi Level

Crystal Plasticity Predictions of Forward-Reverse Simple Shear Flow Stress

2011 ◽  
Vol 702-703 ◽  
pp. 204-207 ◽  
Author(s):  
Young Ung Jeong ◽  
Frédéric Barlat ◽  
Myoung Gyu Lee
Keyword(s):  
Flow Stress ◽  
Crystal Plasticity ◽  
Simple Shear ◽  
Bauschinger Effect ◽  
Texture Evolution ◽  
Simple Shear Flow ◽  
Plasticity Model ◽  
Lower Yield Stress ◽  
Crystal Plasticity Model ◽  
Stress Reversals

The flow stress behavior of a bake-hardenable steel during a few simple shear cycles is investigated using a crystal plasticity model. The simple shear test provides a stable way to reverse the loading direction. Stress reversals were accompanied with a lower yield stress, i.e., the Bauschinger effect, followed by a transient hardening stage with a plateau region and, permanent softening. The origins of these three distinct stages are discussed using a crystal plasticity model. To this end, the representative discrete grain set is tuned to capture such behavior by coupling slip system hardening appropriately. The simulated results are compared with experimental forward-reverse simple shear stress-strain curves. It is shown that the characteristic flow stress stages are linked to texture evolution and to the Bauschinger effect acting on the different slip systems.

Sign in / Sign up

Export Citation Format

Share Document