铝金属空心球型泡沫材料的动态力学性能分析  

Dynamic Mechanical Property of Aluminium Metal Hollow Spherical Foam Material

作　　者：范建辉[1] 李业学[1] 

机构地区：[1]湖北文理学院建筑工程学院,湖北襄阳441053

出　　处：《湖北文理学院学报》2014年第11期18-22,共5页Journal of Hubei University of Arts and Science

基　　金：湖北省自然科学基金项目(2013CFC029);湖北省重点实验室开放基金项目(13XKL02016)

摘　　要：采用有限元法分析铝金属空心球型闭孔泡沫材料的动态力学性能,研究了冲击速度、相对密度、基体材料的应变强化以及功能梯度对泡沫材料的平台应力和密实化应变能的影响.结果表明:泡沫材料的平台应力和密实化应变能均随着冲击速度、相对密度和应变强化的增加而增强;功能梯度模型在能量吸收方面表现出明显的优越性,即密度最大的一层作为冲击端、密度最小的一层作为固定端的梯度配置泡沫模型的能量吸收最大.With the finite element method employed, it analyzes the dynamic mechanical property of aluminium metal hollow spherical foam material, and it discussses the impact of crushing velocity, relative density, strain strengthening and function gradient on the plateau stress and the densification strain energy of the foam material. The findings show that the plateau stress and the densification strain energy will be increasing with the strengthening of crushing velocity, relative density, strain strengthening; the function gradient model shows up obvious superiority in energy absoption, that is, the layer with the biggest density as the first impacted layer and the layer with the least density as the last layer, the most energy will be absorbed by the foam model.

关 键 词：动态力学性能 泡沫材料 圆球壳 有限元分析 

分 类 号：O347.3[理学—固体力学]