低速冲击加载装置设计及撞击角度对波剖面的影响  

Design of a low-velocity flyer driving device and effects of impact angles on wave profile measurements

作　　者：李克武[1] 赵锋[1] 张光升[1] 王广军[1] 谭兴春[1] 

机构地区：[1]中国工程物理研究院流体物理研究所冲击波物理与爆轰物理国防科技重点实验室,四川绵阳621999

出　　处：《爆炸与冲击》2013年第S1期59-62,共4页Explosion and Shock Waves

基　　金：中国工程物理研究院科学技术重大基金项目(2009A0201008)

摘　　要：基于轻气炮原理,设计并搭建了一套小型的低速飞片加载装置,能够方便快捷地完成低冲击幅值实验。进行了弹速曲线测量实验与校核实验,给出了飞片加载装置的弹速曲线模型与相应可靠的模型参数。通过低速带角度撞击的数值模拟分析,发现在低速冲击时撞击角度对速度波剖面影响非常显著,根据分析结果确定了实验对撞击角度的合理控制范围。进行了铝样品速度波剖面测量实验,验证了加载装置的整体性能,为后续开展低冲击幅值实验奠定了基础。Based on the working principle of a light-gas gun,a small-sized low-velocity flyer driving device was developed.With the help of the developed driving device,it is possible to complete lowamplitude impact experiments quickly and easily.The velocity curves of the projectiles were measured and the verification test was carried out.And the projectile velocity-curve model for the developed driving device was proposed and the corresponding parameters were given.The oblique impacts with different angles were numerically simulated.The results show that the impact angle can markedly affect the velocity profile measurements of the projectiles at low impact velocities.To keep measured wave profiles reliable,the control requirements for the impact angle were given.Then,a uniaxial strain experiment of low-amplitude impact was carried out on the 2024-T3sample.The wave profile of 2024-T3displayed the overall performance of the developed driving device and laid the foundation for the subsequent experiments.

关 键 词：爆炸力学 低幅值冲击 一维应变 弹速曲线 带角度撞击 

分 类 号：TQ560.5[化学工程—炸药化工]