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《Journal of Vibration and Shock》 2015-22
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Effect of stress state on the numerical prediction of ballistic resistance of thin 6061-T6 aluminum alloy targets against sphere projectile impacts

XIAO Xin-ke;WANG Yao-pei;WANG Shuang;ZHANG Wei;Nanyang Institute of Technology,School of Civil Engineering;Nanyang Institute of Technology,School of Software;Harbin Institute of Technology;  
Recent studies show that the ductile fracture of some metals may depend on not only the stress triaxiality but also the Lode parameter. Two ductile fracture criteria developed in recent publications incorporating the Lode parameter effect were implemented into ABAQUS procedure and were employed in the numerical prediction of the fracture behavior and ballistic resistance of 1. 6 mm thick 6061-T6 aluminum alloy targets under impacts of a 7. 9 mm diameter steel ball. To reveal the effect of stress state,FE calculations by using other two fracture criteria without incorporation with the Lode parameter were conducted. These predictions were compared with the test results reported in the open literature.The present comparison study shows that the incorporation of the Lode parameter can improve the prediction results on the fracture behavior and ballistic resistance of 6061-T6 aluminum alloy targets.
【Fund】: 国家自然科学基金(11072072 11502120);; 河南省基础与前沿技术研究(152300410016)
【CateGory Index】: TJ410
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