含能破片引爆带壳炸药过程的数值模拟 |
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引用本文: | 李旭锋,李向东,顾文彬,李裕春,秦入平.含能破片引爆带壳炸药过程的数值模拟[J].爆炸与冲击,2014,34(2):202-208. |
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作者姓名: | 李旭锋 李向东 顾文彬 李裕春 秦入平 |
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作者单位: | 1.解放军理工大学野战工程学院,江苏 南京210007 |
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基金项目: | 国家自然科学基金项目(10902053) |
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摘 要: | 将引爆模拟战斗部等效为带铝壳炸药,设计了一种新型含能破片作为毁伤元,利用非线性有限元LS -DYNA软件对该含能破片侵彻、引爆带壳炸药的作用过程进行了数值模拟。用“升降法”得到了该“含能破片”对不同盖板厚度带壳炸药的引爆速度,同时与普通破片引爆同规格带壳炸药进行了对比,并进行了实验验证。结果表明,通过控制含能破片的撞击速度和含能物质的延迟起爆时间,可有效引爆盖板厚度为8~16mm的带铝壳炸药。
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关 键 词: | 爆炸力学 临界速度 非线性有限元 带壳炸药 能破片 引爆 |
收稿时间: | 2012-09-24 |
Numerical simulation on detonating shelled explosives by energetic fragments |
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Institution: | 1.College of Field Engineering, PLA University of Science and Technology, Nanjing210007, Jiangsu, China2.School of Mechanical Engineering, Nanjing University of Science and Technology, Nanjing210094, Jiangsu, China |
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Abstract: | Simulatedammunitionswereequivalenttoaluminum-shelledexplosivesandanewenergetic
fragmentwasdesigned.Thenonlineardynamicssoftware,LS-DYNA,wasusedtonumericallysimulatethecompleteprocessesoftheenergeticfragmentspenetratingthecoverplatesanddetonatingthe
shelledexplosives.Withthehelpoftheup-and-downmethod,theimpactvelocitiesoftheenergetic
fragmentswerecalculatedfordetonatingtheshelledexplosiveswiththecoverplatesofdifferentthicknessesandcomparedwiththoseofthesolid
ragments.Thecorrespondingexperimentswerecarried
outtoverifythetypicaldataselectedfromthenumericalsimulations.Theinvestigatedresultsshow
thattheexplosivesshelledby8-16-mmthickaluminumcoverscanbeeffectivelydetonatedbycontrollingtheimpactvelocitiesoftheenergeticfragmentsandthedetonationdelaytime
oftheenergetic
materialinthefragments. |
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Keywords: | mechanicsofexplosion criticalvelocity nonlineardynamicssoftware shelledexplosives energeticfragment" target="_blank">energeticfragment')" href="#"> energeticfragment detonating |
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