2023 Volume 64 Issue 4 Pages 785-794
This study describes the basic capabilities of an “Explicit” kink model based on Field Theory of Multiscale Plasticity (FTMP), where the incompatibility tensor-incorporated additional degrees of freedom (DOFs), mediated by the Rank-1 connectivity-based projection direction with variable shear measure, directly drives the kink field evolutions in addition to the conventional slip mode. Not only inhomogeneous but realistic kink morphologies but also slightly improved energy releasing characteristics are shown to be reproduced. Furthermore, virtual double compression tests are performed on thus obtained kinked samples, demonstrating the kink strengthening that qualitatively agrees with experiments. Further enrichment of the model via the incompatibility-based DOFs introduced also in the slip model is shown to be able to simulate even more realistic kink morphologies and the attendant rotation angle distributions accurately.
