CL-20基高爆速压装炸药的落锤冲击响应特性  

Response of CL-20-based high-detonation-velocity pressed explosive to drop-hammer impact

作　　者：徐风 蒋建伟[1] 王树有[1] 李梅[1] 郝泽辉 XU Feng;JIANG Jianwei;WANG Shuyou;LI Mei;HAO Zehui(State Key Laboratory of Explosion Science and Safety Protection,Beijing Institute of Technology,Beijing 100081,China;Shanxi Jiangyang Chemical Co.,Ltd.,Taiyuan 030041,Shanxi,China)

机构地区：[1]北京理工大学爆炸科学与安全防护全国重点实验室,北京100081 [2]山西江阳化工有限公司,山西太原030041

出　　处：《爆炸与冲击》2025年第4期78-89,共12页Explosion and Shock Waves

摘　　要：针对典型CL-20基高爆速压装炸药(C-1,94.5%CL-20+5.5%助剂)的发射安全性问题,开展了400 kg大型落锤试验对压装炸药C-1的冲击响应特性进行研究。同时,采用改进的应力率表征法及下限值法、特性落高法分别对该炸药的落锤冲击响应特性进行表征,并与同类压装炸药JO-8和JH-2进行了对比。得到了不同落高下3种压装炸药底部实测应力曲线及表征参数,并讨论了3种炸药撞击感度的差异及C-1炸药撞击感度的影响因素。结果表明,改进的应力率表征法对炸药撞击感度的表征具有一定的有效性和普适性,与其他方法对撞击感度规律的反映具有一致性。C-1炸药的特性落高(H_(50))为1 m,分别为JO-8和JH-2炸药特性落高的62.50%和50.00%;C-1炸药不发生爆轰对应的后坐应力峰值(σ_(0))为748.90 MPa,分别为JO-8和JH-2的85.42%和64.33%;C-1的安全应力率参数(C_(0))为344 GPa^(2)/s,分别为JO-8和JH-2的45.87%和39.14%。CL-20的分子结构、C-1药柱的力学性能和热-化特性是造成其撞击感度高于JO-8和JH-2撞击感度的主要因素。For the launch safety problem of the typical CL-20-based high detonation velocity pressed explosive(C-1,94.5%CL-20+5.5%additive),the impact response characteristics of the explosive were studied by a large-scale hammer test with 400 kg,which has an impact loading curve similar to the loading characteristics of artillery chamber pressure.Meanwhile,the improved stress rate characterization method,the lower limit method,and the drop height method were used to characterize the drop hammer impact response characteristics of the explosive,and compared with the same kind of pressed explosives JO-8 and JH-2.The improved stress rate characterization method is obtained by improving the data processing process based on existing criteria and weakening the sensitivity of the original criterion formula to oscillatory waveforms.The measured stress curves and characterization parameters of the bottom of the three pressed explosives under different drop heights are obtained by tests,and the impact sensitivity differences of the explosives and influence factors of the impact sensitivity of C-1 are discussed.The results show that the improved stress rate characterization method has certain effectiveness and universality for characterizing the impact sensitivity of explosives.Meanwhile,the improved stress rate characterization method is consistent with other methods in reflecting the law.The drop height of C-1(H_(50))is 1.0 m,which is 62.50%and 50.00%of JO-8 and JH-2,respectively;the peak stress of the backseat corresponding to non-detonation(σ_(0))is 748.90 MPa,which is 85.42%and 64.33%of JO-8 and JH-2,respectively;the safety stress rate parameter(C_(0))is 344 GPa^(2)/s,which is 45.87%and 39.14%of JO-8 and JH-2,respectively.The molecular structure of CL-20,the mechanical properties,and the thermal-chemical characteristics of the C-1 explosive cylinder are the main factors that make its impact sensitivity higher than JO-8 and JH-2.The research results can provide a reference for the application and design calculation of CL-20-based

关 键 词：CL-20基炸药 冲击响应特性 抗过载性能 大型落锤试验 安全判据 

分 类 号：O381[理学—流体力学] TJ55[理学—力学]