Abstract
The Non-Linear Notch Mechanics (NLNM) has been proposed by H. Nisitani in 1994. The concept of NLNM can assure the occurrence of the same phenomena in a notched specimen and a real object under large scale yielding. The effectiveness of NLNM on the thickness of a plate has not been confirmed until now. In this paper, the effectiveness of NLNM on the thickness of a plate was discussed through the plastic strain distribution near the notch root obtained by FEM analyses.