Formation of Dislocation Cell Structure Based on FTMP-Implemented 3D Simulator

Abstract

In this study, FTMP (Field Theory of Multiscale plasticity) was incorporated into a CP-FEM simulator, and simple tensile analyses were conducted in the [001] direction on a single crystal FCC metal. As a result, isotropic structures resembling dislocation cells were observed. To better represent these cell structures, a recovery model based on FTMP, which assumes a pair annihilation process via incompatibility rate, was introduced. This analysis revealed the presence of traveling waves in the incompatibility distribution normal to the slip plane. These waves were further enhanced by the superposition of fluctuating strain energy rates driven by the incompatibility field, whose interactions ultimately produced equiaxed patterns resembling cell structures.