Journal of Theoretical
and Applied Mechanics

54, 4, pp. 1079-1093, Warsaw 2016
DOI: 10.15632/jtam-pl.54.4.1079

Ductile fracture criterion for specimens with notches made of aluminium alloy EN-AW 2024

Łukasz Derpeński, Andrzej Seweryn
The paper presents the experimental verification of the most frequently used ductile fracture criteria based on authors own experimental results and numerical calculations. Attention is drawn to the large discrepancy of results of fracture prediction and experimental data for six considered criteria. Based on own results, a new ductile fracture criterion for notched specimens is proposed. In the criterion, it is assumed that fracture initiation occurs when the maximum normal stress reaches a critical value depending on the maximum value of plastic shear strain.
Keywords: numerical analysis, fracture of specimen with notches, ductile fracture criterion