摘要
水下爆炸或者陆地触雷爆炸时,人下肢骨骼极易损伤,为研究冲击载荷作用下股骨、胫骨的动态力学性能以及它们不同部位动态力学性能的分布规律,利用分离式Hopkinson压杆(SHPB)分别对股骨、胫骨的不同部位进行不同应变率下的动态压缩实验。分别得到股骨和胫骨不同部位在不同应变率下的压缩变形情况以及应力应变曲线,进一步得到它们在冲击压缩下的抗压强度。研究表明:股骨,胫骨都对应变率具有较大的依赖性;在冲击压缩条件下,股骨和胫骨动态力学性能都表现出两端较弱,中部较强的分布规律,该研究成果对以后提高人体的抗冲击能力,加强人体冲击伤的救治与防护具有一定参考价值。
Lower limbs of human beings are very easy to be injured by underwater or land mine explosion. This research attempts to understand the femur and shank＇s dynamic properties and dynamic mechanical distribution law of their different parts under shock load. This paper uses split-Hopkinson pressure bar （SHPB） to conduct dynamic compressive test on femur and tibia under different strain rates for the purpose of acquiring compression deformation and stress-strain curve thereof and further acquiring compressive strength under compact impression. Research shows femur and shank have highly dependency on strain rate and they also demonstrate a strong central distribution along with two weak ends in the aspect of dynamic mechanical properties. This research has practical value to impact resistance and injury＇s treatment and prevention.
作者
李昕
陈利
张庆明
张爱法
马刚
LI Xin CHEN Li ZHANG Qingming ZHANG Aifa MA Gang(State Key Laboratory of Expansion Science and Technology,Beijing Institute of Technology, Beijing 100081 ,China)
出处
《中国测试》
CAS
北大核心
2016年第10期63-67,共5页
China Measurement & Test
