Mechanical property tests and dynamic response analysis for 5A06 aluminum alloy plates subjected to underwater shock loading
REN Peng1, Tian A-li1 , ZHANG Wei2, HUANG Wei2
1. Jiangsu University of Science and Technology, School of Naval Architecture & Ocean Engineering, Zhenjiang 212000,China；
2. Harbin Institute of Technology, Hypervelocity Impact Research Center, Harbin 150080,China
The mechanical properties and dynamic constitutive relation of 5A06 aluminium alloy material were investigated in this study. The quasi-static and dynamic uniaxial tension experiments were conducted at the temperature ranging from 25 C to 250º C by using a universal testing machine and a split Hopkinson tension bar. As a result, the mechanical behavior of 5A06 aluminium alloy under different temperatures and strain rates was obtained. Based on the experimental results, the temperature softening item of the Johnson-Cook strength model was modified and the material constants were calibrated by a combination of experimental tests and numerical simulations with the finite element software AUTODYN-2D. Finally, the dynamic response histories of 5A06 aluminum alloy plates subjected to underwater shock loading were investigated by using numerical simulations. The results of numerical calculation agreed well with the test results. It was shown that the numerical calculation model is reasonable and reliable. Finally, the dynamic responding characteristics of 5A06 aluminum alloy plates subjected to underwater shock loading were investigated by using numerical simulations.
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