Journal
ADVANCES IN MECHANICAL ENGINEERING
Volume 7, Issue 5, Pages -Publisher
SAGE PUBLICATIONS LTD
DOI: 10.1177/1687814015585428
Keywords
Ballistic; failure; Johnson-Cook model; lead; magnesium alloy
Categories
Funding
- Ministry of Higher Education Malaysia via Universiti Kebangsaan Malaysia
- Universiti Pertahanan National Malaysia [FRGS/1/2012/TK04/UPNM/0304, LRGS/2013/UPNM-UKM/DS/04]
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The association of the failure behavior of the AZ31B magnesium alloy with absorption energy under ballistic impact condition was investigated in this study, as well as the effect of varying percentages of added lead (Pb) content. The compositions of Pb in AZ31B were 1%, 5%, and 10% by percentage weight of Pb. Two types of projectile were used to compare the experimental and simulation results. Ballistic testing on a magnesium alloy plate was performed at the velocity of 435m/s for the 9mmx19mm Parabellum projectile and 976m/s for the 5.56mmx45mm NATO projectile. Simulation was performed using the Johnson-Cook model to determine the maximum stress that the material can withstand. Deformation and failure occurred in the ballistic simulation when the different projectiles were used. In the 9mmx19mm Parabellum projectile, no penetration was observed in the magnesium alloy, whereas in the 5.56mmx45mm NATO projectile, complete penetration was observed throughout the thickness of the alloy. The addition of Pb on AZ31B affected the absorption energy, and the addition of 1% Pb produced the most suitable absorption energy for further analysis.
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