Study on evaluation of strain around the fracture area of sheet metal

Abstract

In this study, the strain evaluation around the fracture area of sheet metal containing U-shaped notch has been conducted by using experiment and numerical calculation. In the experimental approach, DIC method was used for calculating the strain in the specimen. Also, in the numerical simulation, two kinds of FE softwares were used. The variation of stress triaxiality η and the effect of out-of-plane strain on the parameter η were investigated.