Failure behavior of 2024-T3 aluminum under tension-torsion conditions

被引：0
作者：
Marcos Rodríguez-Millán
Álvaro Vaz-Romero
Ángel Arias
机构：
[1] University Carlos III of Madrid,Department of Mechanical Engineering
[2] University Carlos III of Madrid,Department of Continuum Mechanics and Structural Analysis
来源：
Journal of Mechanical Science and Technology | 2015年 / 29卷
关键词：
Aerospace materials; Aluminum 2024; Failure behavior; Lode parameter; Stress triaxiality;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Experimental and numerical investigations of the failure strain of aeronautical 2024-T3 aluminum were conducted. Experiments on the Double notched tube (DNT) specimen loaded in combined tension and torsion were applied to an aluminum alloy for the first time. Numerical analysis showed that the specimen exhibited uniformity in stress-strain as plastic strain developed. Low triaxiality values and a wide range of Lode parameter values were obtained at failure conditions. The failure strain of 2024-T3 aluminum showed strong dependence on the Lode parameter in agreement with the observations reported by other authors. The use of the DNT specimen was proven to be efficient in calibrating the ductile failure model of aluminum alloys.
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页码：4657 / 4663
页数：6
相关论文
共 72 条
[1]  
Bao Y.(2004)On fracture locus in the equivalent strain and stress triaxiality space Int. J. Mech. Sci. 46 81-98
[2]  
Wierzbicki T.(2005)Dependence of ductile crack formation in tensile tests on stress triaxiality, stress and strain ratios Eng. Fracture Mech. 72 505-522
[3]  
Bao Y.(2007)Rupture mechanisms in combined tension and shear—Experiments Int. J. Solids and Structures 44 1768-1786
[4]  
Barsoum I.(2013)Tension-torsion fracture experiments— Part I: Experiments and a procedure to evaluate the equivalent plastic strain Int. J. Solids and Structures 50 4241-4257
[5]  
Faleskog J.(2008)A new model of metal plasticity and fracture with pressure and Lode dependence Int. J. Plasticity 24 1071-1096
[6]  
Faleskog J.(2009)On the application of stress triaxiality formula for plane strain fracture testing ASME J. Eng. Mater. Technol. 131 1-10
[7]  
Barsoum I.(2009)Effects of the stress state on plasticity and ductile failure of an aluminum 5083 alloy Int. J. Plasticity 25 2366-2382
[8]  
Bai Y.(2010)A study on the effect of the stress state on ductile fracture Int. J. Damage Mech. 19 75-94
[9]  
Wierzbicki T.(2010)A local viewpoint for evaluating the influence of stress triaxiality and Lode angle on ductile failure and hardening Int. J. Plasticity 26 348-371
[10]  
Bai Y.(2004)Effects of fracture criteria on high velocity perforation of thin beams Int. J. Comput. Meth. 1 171-200
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