内部爆炸载荷下泡沫铝夹心柱壳动态响应仿真研究

摘要

Sandwich cylinders cored with aluminum foam have been widely applied in the fabrication of blast protection containers.The experiment under internal blast loading was performed and,based on the Voronoi technique,finite element models of sandwich cylinders were constructed and then used to simulate the deform-ation process of the sandwich cylinders.The results show that the simulation results agree well with the experiment results.With the increase of the cores'relative densities,the deflections of the inner shells increase and the deflections of the outer shells decrease.Furthermore,the deflections of the shells and the relative density of the cores approximately satisfy a quadratic relationship.%泡沫铝夹心柱壳在防爆容器领域具有广阔的应用前景.对泡沫铝夹心柱壳在内部爆炸载荷下的动态响应特性进行了实验研究,并建立了基于Voronoi技术的泡沫铝夹心柱壳有限元模型,对其动态响应进行了数值模拟.研究结果表明:仿真结果与实验结果吻合较好,内部爆炸载荷作用下内壳变形量随芯体相对密度增大而减小,外壳变形量随芯体相对密度的增大而增大,且壳体变形量与芯体相对密度近似满足二次函数关系.