Optimization analysis for low velocity impact resistance performance of steel tube sandwich panels

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Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (1) : 194-200.

ZHANG Jianliang, XIA Zhicheng, ZHOU Jingyang, KONG Xinli, YUAN Xiaojun

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Abstract

To study anti-impact properties and destruction of steel tube-core sandwich panels under dropping impact load, in tests three steel tube sandwich panels were designed. The number of steel tubes of the steel tube sandwich panels was 3, 4 and 5, respectively. Respectively, they were named G3, G4 and G5. For three panels, the distances between tubes were 90 mm, 30 mm and 0 mm, respectively. The sandwich panels with different thicknesses of face-sheets and tube walls were studied with ANSYS/DYNA. For anti-impact properties, the influence factors discussed included position of tubes, thickness of face-sheets and tube walls. In addition, the contribution ratio of unit added weight γ was put forward to measure the optimization level of sandwich panels anti-impact property. The results showed that the sandwich panel with continuously distributed steel tubes has the best anti-impact properties; face-sheets play a major role in energy absorption when the deformation of the sandwich panel is small; the anti-impact property of the sandwich panel can be enhanced significantly by merely adding the thickness of the middle steel tubes, but the material utilization rate decreases; merely adding the thickness of the front face sheet can improve the participation level of the side steel tubes, the integrity and the material utilization ratio of sandwich panels.

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steel tube sandwich panel / finite element / drop hammer impacting / time history curve

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ZHANG Jianliang, XIA Zhicheng, ZHOU Jingyang, KONG Xinli, YUAN Xiaojun. Optimization analysis for low velocity impact resistance performance of steel tube sandwich panels[J]. Journal of Vibration and Shock, 2017, 36(1): 194-200

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