FTMP場の理論に基づく二重圧縮時のキンク変形機構についての考察

抄録

The formation of kinks and their associated strengthening have garnered significant attention in recent years as a key candidate for a new strengthening mechanism. We have successfully established a model based on the Field Theory of Multiscale Plasticity (FTMP) that can represent the entire process from kink deformation to strengthening in a unified manner. However, a critical gap remained—the inability to accurately capture the initial yield stress increase, typically observed in 45° double compression tests. This study addresses this issue by re-examining the information to be transferred from the pre-compression analysis. It is demonstrated that simply incorporating the drag stress history can resolve this problem, rendering the present approach highly versatile and surpassing other FEM-based methods.