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1、中北大學(xué)學(xué)位論文破甲彈對(duì)運(yùn)動(dòng)體斜侵徹的仿真研究摘要目前有關(guān)近程反導(dǎo)的戰(zhàn)斗部中主要以破片形式的動(dòng)能攔截為主，如聚焦戰(zhàn)斗部、可控離散桿戰(zhàn)斗部、定向戰(zhàn)斗部等，其對(duì)深侵徹鉆地戰(zhàn)斗部的毀傷作用效果微乎其微。破甲戰(zhàn)斗部形成的聚能射流具有高能量、大侵徹的特點(diǎn)，若采用該類型戰(zhàn)斗部將會(huì)極大的提高近程反導(dǎo)的效率。本文主要是利用ANSYS/LS-DYNA有限元分析軟件以破甲戰(zhàn)斗部侵爆鉆地戰(zhàn)斗部設(shè)想為基礎(chǔ)，以110°單錐角藥型罩形成的聚能射流斜侵徹運(yùn)動(dòng)體為研究方向，分別對(duì)不同的入射角侵徹一定速度梯度的高速運(yùn)動(dòng)靶板進(jìn)行了模擬仿真，初步探索了斜侵徹時(shí)聚能射流的侵徹能力、射流侵蝕以及侵徹后效等基本規(guī)律。研究結(jié)果表明：(1
2、)射流受到橫向干擾后，對(duì)其中部低速段的影響較大，破壞其穩(wěn)定性，降低破甲威力，而射流頭部高速段干擾較小；(2)隨入射角增加，射流侵徹能力（即侵徹后射流頭部軸向速度）逐漸降低；(3)隨運(yùn)動(dòng)靶板速度增加，射流侵徹能力逐漸降低；(4)隨入射角增加，射流侵蝕（即射流徑向速度、透孔體積）逐漸增大；(5)隨運(yùn)動(dòng)靶板速度增加，射流侵蝕逐漸增大；(6)隨入射角增加，后效作用（即侵徹后2d）v逐漸降低；(7)隨運(yùn)動(dòng)靶板速度增加，后效作用（即侵徹后v2d）逐漸降低；(8)在入射角θ=30°~55°范圍內(nèi)，侵徹后射流都可以有效的引爆戰(zhàn)斗部裝藥，高效的攔截導(dǎo)彈。本文的研究結(jié)果可為發(fā)展反深侵徹鉆地武器提供一定的借鑒。關(guān)
3、鍵詞：破甲彈，聚能射流，運(yùn)動(dòng)體，斜侵徹，近程反導(dǎo)中北大學(xué)學(xué)位論文SimulationresearchonsunderarmorobliquepenetratehighspeedmovementABSTRACTAtpresent,therelevantshort-rangeanti-missilewarheadfragmentsismainlyusedtheformofkineticenergyinterceptors,suchasfocusingwarhead,controllablediscreterodanddirectionalwarheadHowever,warhead,withde
4、eppenetrationhasminimaleffectsondamagingpenetration.Sunderarmorobliquepenetrationwarheadisconsistedofhighenergyandhighpenetration.Theuseofthistypeofwarheadgreatlyimprovestheefficiencyofshort-rangeanti-missilewill.Basedontheaboveresearch,thispaperusesANSYS/LS-DYNAfiniteelementanalysissoftwaretosimul
5、atethephenomenonwhichisjetflowformed110°singleconeanglelinerindifferentincidenceanglespenetrateshighspeedmovementtargetboardwithcertainvelocitygradientaswhile,preliminary,explorethebasiclawsofpenetrationcapability,jeterosionandpenetrationaftereffect.Theresultsindicatesthat(1)Jethasgreaterimpactonit
6、slow-middlesegment,whendisturbedbytransverseinterferenceincludingunderminingitsstability,turningdownarmorpower,whilelessinterferenceonheadofthehigh-speedjetsegment.(2)Jetpenetrationcapability(ie,theaxialvelocityoftheheadafterthejetpenetration)decreasesgradually;(3)Withthetargetboardmovementspeedinc
7、reasing,capabilityofjetpenetrationdecreasesgradually;(4)Withtheincreasingofincidentangle,jeterosion(ie,jetradialvelocity,throughtheporevolume)increasesgradually;(5)Withtargetmovingfast,abilityofthejeterosio
