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Structural Evaluation of an Experimental Aluminum/Magnesium Decklid
ISSN: 1946-3979, e-ISSN: 1946-3987
Published April 12, 2011 by SAE International in United States
Citation: Carter, J., Melo, A., Savic, V., Hector, L. et al., "Structural Evaluation of an Experimental Aluminum/Magnesium Decklid," SAE Int. J. Mater. Manuf. 4(1):166-174, 2011, https://doi.org/10.4271/2011-01-0075.
Experimental decklids for the Cadillac STS sedan were made with Al AA5083 sheet outer panels and Mg AZ31B sheet inner panels using regular-production forming processes and hardware. Joining and coating processes were developed to accommodate the unique properties of Mg. Assembled decklids were evaluated for dimensional accuracy, slam durability, and impact response. The assemblies performed very well in these tests. Explicit and implicit finite element simulations of decklids were conducted, and showed that the Al/Mg decklids have good stiffness and strength characteristics. These results suggest the feasibility of using Mg sheet closure panels from a structural perspective.