Journal of Theoretical
and Applied Mechanics
0, 0, pp. , Warsaw 0

Numerical investigation of mechanical behavior of cruciform specimens in aluminum alloy 6082-T6 subjected to different biaxial loading conditions

khelil foudil, aour benoumeur, TALHA ABDERRAHIM, BENSEDDIQ NOUREDDINE
The analysis of cracked cruciform specimens under biaxial loading is very important and closer to reality for the study of the behavior of marine, naval, aeronautical and railway structures. The aim of this work is to study the evolution of the fracture parameters in combined mixed mode in an aluminum alloy A6082-T6 cruciform specimen as a function of the biaxial loading with different ratios. To this end, the effects of the main parameters, such as, load ratio, crack length, crack orientation and non-proportional loading coefficient have been analyzed and discussed in order to highlight the fracture toughness of the studied material. The results show that the finite element method is a useful tool for calculation of the crack characteristics in mechanics biaxial fracture. According to the results obtained, a non-proportional evolution of the fracture parameters, namely, the SIFs KI and KII, T-stress, and the biaxiality parameter was observed. Indeed, these latters depend considerably on the length of the crack, the angle of orientation and the applied biaxial loading. Detailed concluding remarks are presented at the end of this work.
Keywords: Fracture mechanics, 6082-T6 Aluminum alloy, Cruciform specimen, Finite element analysis, Stress intensity factor, T-stress, Biaxiality

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