铁基泡沫材料动态压缩力学性能与吸能特性分析  

Dynamic compressive mechanical properties and energy absorption characteristics of iron based foam materials

作　　者：王鼎 武海玲[2] 白利红[2] 王彦莉 袁威[2] WANG Ding;WU Hailing;BAI Lihong;WANG Yanli;YUAN Wei(Baotou Regional Office of Navy Military Representative Bureau,Baotou 014030,China;Ningho Branch of Chinese Academy of Ordnance Seience,Yantai 264003,China)

机构地区：[1]海军驻包头地区军事代表室,内蒙古包头014030 [2]中国兵器科学研究院宁波分院,山东烟台264003

出　　处：《兵器材料科学与工程》2019年第1期105-108,共4页Ordnance Material Science and Engineering

摘　　要：针对航空航天兵器等领域对抗冲击材料与结构的迫切需求,采用霍普金森压杆系统,研究铁基泡沫材料动态压缩力学性能,并给出不同应变率下铁基泡沫材料的能量吸收特性。结果表明:铁基泡沫材料具有较强的应变率敏感性,与静态压缩相比,动态加载条件下铁基泡沫材料的最大压缩应变更大,且动态压缩曲线出现应力平台段,应力平台值随应变率增大而增大;铁基泡沫材料在4个应变率下的单位体积吸收能量分别为169.45、202.36、219.26、254.24 kJ/m3,其单位体积吸收能量值随应变率的增大呈线性上升趋势。In view of the urgent demand for impact materials and structures in aerospace and ordnance fields,the dynamic compressive mechanical properties of iron based foam materials were studied by using Hopkinson pressure bar system,and the energy absorption characteristics of iron based foam materials at different strain rates were given.The results show that iron based foams have strong strain rate sensitivity,compared with the static compression,the maximum compressive strain of iron based foams under dynamic loading condition is larger,and the stress plateau segment appears in the dynamic compression curve,which increases with the increase of strain rate.The energy absorbed per unit volume of iron based foams under the four strain rates is 169.45,202.36,219.26,254.24 kJ/m^3 respectively.The energy absorbed per unit volume increases linearly with the increase of strain rate.

关 键 词：铁基泡沫材料 霍普金森杆 动态压缩 吸能特性 

分 类 号：TG146.4[一般工业技术—材料科学与工程]