含能材料2018，Vol.26Issue(6)：517-523,7.DOI:10.11943/j.issn.1006-9941.2018.06.009
冲击加载下梯度密度飞片系统产生准等熵压缩过程的实验技术
Experimental Technology of Quasi-isentropic Compression Process Generated by a Graded Areal Density Flyer System Under Impact Loading
摘要
Abstract
To study the quasi-isentropic compression of solid explosive, a graded areal density flyer termed the 'bed of nails' (BON) was used.Through changing the flying spike height combined with gun loading technology and aluminum base multiple electromagnetic particle velocity gauge technique, when the buffer layer after the flyer spike hit the buffer layer then impacted the solid explosive, the quasi-isentropic compression process generated by the front surface and inside of the explosive were tested and captured.The particle velocity at front surface and different depths of explosive inside was measured by Al-based multiple electro-magnetic particle velocity gauge.The shock wave tracer was used to capture the time of shock wave reaching each depth of the explosive.The comparative experiments with different peak heights were performed.Results show that the quasi-isentropic com-pression duration of front surface of target are 0.37 μs for JB-9014 target and 0.22 μs for PTEF target when the flyer spike height is 2.5 mm.The front surface of the target has complete quasi-isentropic compression process and inside the target has completed the process of quasi-isentropic compression to impact.The x-t diagram of shock wave shows that the velocity of shock wave in the tar-get is stable at the early stage, and it attenuates at later stage.When the flyer spike height and the thickness of the buffer layer are properly allocated, the quasi isentropic compression process with a wider time will take place in the target sample.关键词
准等熵压缩/梯度密度飞片/冲击加载装置/铝基组合式电磁粒子速度计技术/JB-9014炸药Key words
quasi-isentropic compression/graded areal density flyer/impact loading device/Al-based multiple electromagnetic particle velocity gauge technique/JB-9014 explosive分类
军事科技引用本文复制引用
赵康,张旭,刘俊明,钟斌,张蓉..冲击加载下梯度密度飞片系统产生准等熵压缩过程的实验技术[J].含能材料,2018,26(6):517-523,7.基金项目
科学挑战专题资助( TZ2018001) （ TZ2018001）
国防科工局技术基础项目(JSZL 2015212c001) （JSZL 2015212c001）
国家自然科学基金(11602248) （11602248）
