弹道学报2025，Vol.37Issue(1)：85-92,8.DOI:10.12115/ddxb.2023.11012
爆炸载荷下泡沫混凝土动态响应及吸能特性研究
Dynamic Response and Energy Absorption Characteristics of Foam Concrete Under Blast Loads
摘要
Abstract
To study the influence of thickness on dynamic response and energy-absorption characteristics of foamed concrete(FC)under explosion-load impact,the numerical calculation of anti-explosion of FC under 0.8 m/kg1/3 ratio-detonation-distance and 0-30 mm thickness was carried out by using finite element software.Subsequently,the anti-explosion tests of FC with thickness of 0 mm,10 mm,20 mm and 30 mm,were carried out to verify the accuracy of the numerical calculation.Through numerical calculation,the damage form and energy-dissipation mechanism of FC under the impact of explosion-load were studied,and the ability of FC to absorb explosion-wave energy was quantitatively analyzed,and the law of the energy absorption characteristics of FC and the deformation response of aluminum alloy plate on the back influenced by the change of thickness of FC was obtained,and the corresponding engineering-calculation-model was derived.The results show that,the size of the FC crushing zone gradually shrinks with the increase of thickness.The FC crushing-zone only accounts for 2.9%of the overall volume when the thickness is 30 mm.FC can effectively absorb and dissipate the energy of explosion wave,and its energy-absorption capacity increases with the increase of thickness.The foam concrete with thickness of 5-30 mm can absorb 42.8%-91.9%of explosion wave energy respectively.The displacement response of aluminum alloy backplane steadily shrinks as FC thickness increases.While the thickness of FC is 30 mm,the displacement response of the center of the aluminum alloy backplane drops to 3.2 mm,which is only 12.6%of that without FC.关键词
爆炸载荷/泡沫混凝土/抗爆试验/动态响应/吸能特性/工程计算模型Key words
explosion load/foam concrete/anti-explosion test/dynamic response/energy-absorption characteristic/engineering calculation model分类
数理科学引用本文复制引用
高一轩,祖旭东,黄正祥,黄灿灿..爆炸载荷下泡沫混凝土动态响应及吸能特性研究[J].弹道学报,2025,37(1):85-92,8.基金项目
国家自然科学基金资助项目(11872214) （11872214）
