The dynamic response of cellular metallic sandwich panels subjected to metal foam projectile impact
Jing Lin; Wang Zhi-hua; Song Yan-ze; Zhao Long-mao
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Institute of applied mechanics and biomedical engineering, Taiyuan University of Technology, Taiyuan030024, China
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History+
Received
Revised
Published
2010-08-16
2010-11-10
2011-12-25
Issue Date
2011-12-25
Abstract
The plastic dynamic response of clamped cellular metallic sandwich panels was investigated experimentally by using metal foam projectile. The deformation and failure modes of sandwich panels subjected to impact load are exhibited. Experimental results show that sandwich panels under impact loading can fail in several modes: indentation failure, penetration failure, core compression and core shear. Based on the experiments, corresponding finite element simulations have been undertaken using the LS-DYNA software. A good agreement has been obtained between the numerical and experimental results. The effects of face thickness, core thickness, relative density of core and applied impulse on the shock resistance of sandwich panels were studied. Structural response of sandwich panel is sensitive to its configuration and the permanent deflection of back face can be decrease by increasing face-sheet and core thickness. The experimental results are of worth to optimum design of cellular metallic sandwich structures.
Jing Lin;Wang Zhi-hua;Song Yan-ze;Zhao Long-mao.
The dynamic response of cellular metallic sandwich panels subjected to metal foam projectile impact [J]. Journal of Vibration and Shock, 2011, 30(12): 22-27
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