Ignitionandgrowthreactiveflow modelforHNS-Ⅳ explosive
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摘要: 进行直径?10mm 的圆筒实验,根据冲击Hugoniot关系,拟合了HNS-Ⅳ炸药的未反应时的JWL 状态方程,并通过数值模拟确定了HNS-Ⅳ炸药爆轰产物JWL状态方程参数;测量炸药/窗口界面粒子速度 历程,结合数值模拟获得HNS-Ⅳ炸药的点火增长模型反应速率方程参数。研究表明,HNS-Ⅳ炸药点火增长 模型能够描述反应过程并与实验结果吻合较好。Abstract: TodevelopanignitionandgrowthreactionflowmodelforHNS-Ⅳexplosive,cylindertests wereconductedonHNS-ⅣexplosiveandtheexpansionprocessesofthecoppercylinderwallswererecordedbyaGSJhighspeedrotatingmirrorcamera, andparticlevelocitiesattheinterfacebetween HNS-ⅣexplosiveandLiFwindowweremeasuredwithlaservelocityinterferometry(VISAR).The correspondingnumericalsimulationswerecarriedoutbyANSYS/LS-DYNA,respectively.TheJWL equation-of-stateparametersforunreactedexplosivewerefittedtotheavailableshockHugoniotdata. Andbycombiningtheexperimentalresultsandnumericalsimulations,theJWLequation-of-stateparametersfordetonationproductweredetermined, aswellasreactiverateparametersforreactionignitionandgrowthin HNS-Ⅳ explosive.Investigatedresultsshowthatthedevelopedignitionand growthreactionflow modelcanbeusedtopicturethereactionprocessofHNS-Ⅳexplosive,andthe numericallysimulatedresultscanagreewiththeexperimentalones.
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Key words:
- mechanicsofexplosion /
- reactionrateEOS /
- interfaceparticlevelocity /
- HNS-Ⅳexplosive
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