A crystal plasticity based model is presented to capture the complex hardening/softening transients observed in deformation of b.c.c. polycrystals at low homologous temperatures. For each crystallite, the microstructure, i.e. the cell block boundaries and cell structure, is modelled with three ...
The model is based on a multiscale approach, which allows the connection of local deformation and damage mechanisms to macroscopic behaviour. To consider the anisotropy of plastic properties, the constitutive model is developed at the grain scale within a crystal plasticity framework. A ...
Within the framework of multi-field theories of damage mechanics we address the problem of crystal plasticity without introducing either the usual decompos
A crystal-plasticity-based computational micromechanics model is presented to study the localization and fracture initiation modes in bending of sheet mate... D Ming,L Ming - 《Philosophical Magazine A》 被引量: 65发表: 2001年 Crystal plasticity approach for predicting the Bauschinger effect in dual...
•A new crystal plasticity model for ufg/nc FCC metals was developed.•The new model was based on the dislocation deformation mechanism.•All stages ... Khan, Akhtar S,J Liu - 《International Journal of Plasticity》 被引量: 8发表: 2016年 Plasticity as a Depinning Phase Transition phase...
In this work, we develop a crystal plasticity finite element (CPFE) based model for the prediction of anisotropic polycrystal yield surfaces of body center cubic (BCC) polycrystalline materials. In the model, deformation of individual single crystals results not only from the resolved shear stress ...
In recent work, we have demonstrated the viability and computational advantages of using a compact database of discrete Fourier transforms (DFTs) for facilitating crystal plasticity solutions in cubic polycrystalline materials subjected to arbitrary deformation paths. This new DFT database approach allows...
Plastic slip deformation of a HCP bicrystal is analyzed by a crystal plasticity FE code and distribution of plastic shear strain on the primary and secondary slip systems, as well as some stress components are examined. The constituent crystal are idealized ones and slip deformation on basal, pri...
This paper presents the identification of dislocation-density-based crystal plasticity parameters for a A508 Cl3 bainite steel in non-irradiated and irradiated states and at different temperatures. The representative volume element for the identification process is a cube containing 1000 steel grains repre...
In this paper, a constitutive framework based on a rate-dependent crystal plasticity theory is employed to simulate localized deformation phenomena in hexa... J Lévesque,M Mohammadi,RK Mishra,... - 《International Journal of Plasticity》 被引量: 2发表: 2016年 Analytical applications and effective...