Simulation of void growth and coalescence behavior with 3D crystal plasticity theory

Discrete dislocation dynamics analysis of the effect of lattice orientation on void growth in single crystals

“…The influence of plastic anisotropy and crystal orientation on void deformation and growth has been analyzed using crystal plastic models within the framework of the finite element model (Quinn et al, 1995;Can et al, 2006;Potirniche et al, 2006b;Liu et al, 2007) or slip line theory (Kysar et al, 2005). These analyses concluded that crystal orientation did influence void growth rate under uniaxial tension but this effect diminished rapidly as triaxiality increased (Potirniche et al, 2006b).…”

Molecular dynamics simulations of void shrinkage in γ-TiAl single crystal

“…In the earlier investigation, a number of continuum models have been proposed to analyze the void growth and to describe the mechanical behavior of materials [9][10][11][12][13], instead of experiments. Continuum models are very efficient and powerful tools, but they do not reveal the most fundamental physical mechanisms.…”

“…Continuum models are very efficient and powerful tools, but they do not reveal the most fundamental physical mechanisms. Currently, a large number of experimental studies [14][15][16]12,17] analyzed the mechanism of voids growth and coalescence in qualitative or quantitative methods. Molecular dynamics (MD) is a method which can more thoroughly analyze the micro-mechanisms, and has been preformed for some materials to explore the physical mechanisms of void growth on atomic scales [18][19][20][21][22][23][24][25].…”

Grain Scale Representative Volume Element Simulation to Investigate the Effect of Crystal Orientation on Void Growth in Single and Multi-Crystals

“…They simulated void coalescence behavior in the single crystal with different characteristic orientations using the crystal plasticity finite element method. Liu et al [14] and Potirniche et al [15] also studied the behavior of voids in single crystals with one or two idealized voids under prescribed boundary conditions. Their results showed that the rate of void growth and the onset of coalescence were dependent on the crystal orientation, which cannot be simulated using the conventional finite element approach.…”

“…However, even with this limitation, the current work is still meaningful considering recent advances in the computational approach based on crystal plasticity, which accurately predicts the anisotropic deformation response of cubic crystals under complex loading conditions [7,[13][14][15][16][17][18][19].…”