典型文献
Microcrack-and microvoid-related impact damage and ignition responses for HMX-based polymer-bonded explosives at high temperature
文献摘要：
Investigating the damage and ignition behaviors of polymer-bonded explosive(PBX)under a coupled impact and high-temperature loading condition is required for the safe use of charged PBXs.An improved combined microcrack and microvoid model(CMM)was developed for better describing the thermal effects of deformation,damage,and ignition responses of PBXs.The main features of the model under typical dynamic loadings(i.e.uniaxial tension and compression,and lateral confinement)at different initial temperature were first studied.And then the effects of temperature on impact-shear sensitivity of HMX-based PBXs were investigated.The results showed that the ignition threshold ve-locity of shear-crack hotspots exhibits an increase from 260 to 270 to 315-325 m/s when initial tem-perature increases from 301 to 348 K;and then the threshold velocity decreases to 290-300 m/s with the initial temperature continually increasing to 378 K.The predicted ignition threshold velocity level of the explosives under coupled impact and high temperature loading conditions were consistent with the experimental data.
文献关键词：
中图分类号：
作者姓名：
Hai-jiao Xue;Yan-qing Wu;Kun Yang;Yi Wu
作者机构：
State Key Laboratory of Explosion Science and Technology,Beijing Institute of Technology,Beijing,100081,China;School of Aerospace Engineering,Beijing Institute of Technology,Beijing,100081,China
文献出处：
引用格式：
[1]Hai-jiao Xue;Yan-qing Wu;Kun Yang;Yi Wu-.Microcrack-and microvoid-related impact damage and ignition responses for HMX-based polymer-bonded explosives at high temperature)[J].防务技术,2022(09):1602-1621
A类：
Microcrack,microvoid
B类：
related,impact,damage,ignition,responses,HMX,polymer,bonded,explosives,high,temperature,Investigating,behaviors,under,coupled,required,safe,use,charged,PBXs,improved,combined,microcrack,model,CMM,was,developed,better,describing,thermal,effects,deformation,main,features,typical,dynamic,loadings,uniaxial,tension,compression,lateral,confinement,different,initial,were,first,studied,And,then,shear,sensitivity,investigated,results,showed,that,threshold,hotspots,exhibits,from,when,increases,velocity,decreases,continually,increasing,predicted,level,conditions,consistent,experimental,data
AB值：
0.464591
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