Shock Resistance Performance Research on Single-layer Spherical Reticulated Dome Supported with the Lower Column

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Journal of Vibration and Shock ›› 2015, Vol. 34 ›› Issue (24) : 170-176.

Ma Xiao-tong, Wang Xiu-li, Ran Yong-hong, Wu Chang

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Abstract

In order to study the shock resistance of single-layer reticulated dome supported with lower columns, analysis of a large number of examples was done. The impact modes and energy transfer/conversion relation in various impact models of whole structure as the lower column subjected to impact loading were summed. Regularity analysis was done from three aspects of different impact height, mass and speed. The results show that the impact modes of structure under impact loads can be divided into four types. During the first impact, the strain energy of structure accounts for about 10% ~ 40% of the total energy and it can’t be neglected. The displacement and stress of structure increased with the increase of impact height, while the energy decreased firstly and then increased. The displacement and stress increased with the increase of impact quality and speed, Mass ratio of 1.0 can be taken as the critical point of energy distribution.

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impact loads / energy transfer / impact velocity / strain energy / shells

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Ma Xiao-tong, Wang Xiu-li, Ran Yong-hong, Wu Chang. Shock Resistance Performance Research on Single-layer Spherical Reticulated Dome Supported with the Lower Column[J]. Journal of Vibration and Shock, 2015, 34(24): 170-176

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