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Failure behavior of 2024-T3 aluminum under tension-torsion conditions
Marcos Rodríguez-Millán,Álvaro Vaz-Romero,Ángel Arias 대한기계학회 2015 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.29 No.11
Experimental and numerical investigations of the failure strain of aeronautical 2024-T3 aluminum were conducted. Experiments on theDouble notched tube (DNT) specimen loaded in combined tension and torsion were applied to an aluminum alloy for the first time. Numericalanalysis showed that the specimen exhibited uniformity in stress-strain as plastic strain developed. Low triaxiality values and awide range of Lode parameter values were obtained at failure conditions. The failure strain of 2024-T3 aluminum showed strong dependenceon the Lode parameter in agreement with the observations reported by other authors. The use of the DNT specimen was proven tobe efficient in calibrating the ductile failure model of aluminum alloys.