作　　者： ; ; ; ;

机构地区： 华中科技大学交通科学与工程学院

出　　处： 《舰船科学技术》 2007年第2期52-56,共5页

摘　　要： 研究了4种截面形式的泡沫铝填充薄壁结构的吸能特性。采用ANSYS/LS-DYNA显式动态有限元分析软件,对结构轴向冲击过程进行仿真,给出了作用反力、吸能效率随轴向压缩位移的曲线,并讨论了截面形式、冲击速度、薄壳材料和泡沫铝密度等参数对结构吸能的影响,为合理的抗冲击结构设计提供参考。 A numerical simulation of the impact event was carried out using the FE code ANSYS8.0/ LS-DYNA version 970. Model our structure in ANSYS, obtain the explicit dynamic solution via LS-DYNA. The collapse profile and crushing force, energy absorption quantitatively into the foam filler component and the section component, energy absorbed per unit mass were given and compared. The influences of the section shape, impact velocity, material of the extrusions and foam density are investigated. According to the finite element analysis, we try to propose some more we try to propose some more efficient impact energy absorption structures to save material and reduce weight in engineering design.

关 键 词： 泡沫铝 薄壳 轴向冲击 吸能

领　　域： [建筑科学]