Impact analysis on Sandwich structures with steel panels and aluminum foam core

S, Pavan Reddy and Khaderi, Syed Nizamuddin (2018) Impact analysis on Sandwich structures with steel panels and aluminum foam core. Masters thesis, Indian institute of technology Hyderabad.

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Abstract

The dynamic responses of two dimensional clamped monolithic and sandwich plates of equal areal mass have been measured by loading the plates at mid-span for two cases, low velocity impact and for blast or shock loading. The sandwich plates comprises of AISI 304 stainless steel face sheets and aluminum metal foam cores. The resistance to shock loading is quantified by the permanent transverse deflection at mid-span of the plates as a function of relative density of foam core, core thickness and blast impulses. It is found that the sandwich plates have a higher shock resistance than monolithic plates of equal areal mass. Also, the shock resistance of the sandwich plates increases with increasing thickness of sandwich core. Finite element simulations clearly depicted the above mentioned behavior of metal foam as core. This clearly explains us the importance of using the metal foams as cores for shock absorbing structures with ultra light weight.

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