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- W4313478907 abstract "Lightweight and high-strength aluminum alloys are widely used in military vehicles due to their excellent mechanical properties. To study the protection mechanism of 7xxx laminated aluminum alloy, the mechanical experiments of aluminum alloy material were firstly carried out in this paper, and the fracture criterion is calibrated. Ballistic simulation of bullet impact on 7xxx laminated aluminum alloy plate was then carried out, R-I model was established, and the failure mechanism of 7xxx laminated aluminum alloy plate was analyzed. The results show that the impact of the bullet on the target plate leads to failure in the form of the lip, bulge, and plastic cracking while the target plate dissipates the energy of the bullet through plastic deformation and ductile reaming. During the energy conversion process, variables such as dimensional stiffness gradient (SDEG), triaxiality of stress (TRIAX), and equivalent plastic strain (PEEQ) associated with material failure will also change, thus causing changes in the morphology of the target plate. The results of the study can provide a reference for the performance evaluation and failure analysis of 7xxx aluminum alloy armor materials." @default.
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- W4313478907 date "2023-03-01" @default.
- W4313478907 modified "2023-10-18" @default.
- W4313478907 title "Determination of Johnson-Cook damage model for 7xxx laminated aluminum alloy and simulation application" @default.
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- W4313478907 doi "https://doi.org/10.1016/j.mtcomm.2022.105224" @default.
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