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This and the next image are from:
Ali Dadrasi (Department of Mechanics, Shahrood Branch, Islamic Azad University, Shahrood, Iran),
“Energy absorption of semi-spherical shells under axial loading”, Australian Journal of Basic and Applied Sciences, 5(11): 2052-2058, 2011
ABSTRACT: This paper treats the dynamic response and energy absorption of aluminum semi-spherical shells under axial loading using non-linear finite element techniques. Aluminum and steel spherical shells of various radii and thicknesses were made by spinning. The influence of geometrical, material and loading parameters on the impact and quasi-static response is investigated using validated numerical models. Also the axial inward inversions of semi-spherical shells are investigated. The research information generated will be useful in developing guidance towards the design of these devices in impact applications.
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