两种材料结构弹体高速侵彻钢筋混凝土靶实验研究

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中图分类号：O385;TJ012.4 国标学科代码：13035 文献标志码：A

Abstract：Twokindsofstructural projectiles madeof twodiferent materials weredesigned inthis paper.Anexperimental study of 11kg projectiles penetrating the reinforced concrete target at 1400m/s was carried out using a 203mm Davis gun. Basedontheexperimentalresults，thestructuralresponse，penetrationcapabilityandrelatedengineering isuesof teprojectile are discussed. The results show that when the reinforced concrete target is penetrated at a velocity of 1400m/s ，the heads of projectiles madeof two diferent materials experienced erosionand were mushroomed.This was caused by high temperatures resultingfrom friction between the projectileandthe concrete during penetration，which significantlysoftened the surfaceof the projectile.Furthermore，thecontact pressure betweenthe projectileand the target exceededthe yieldstrengthof the projectilematerialnearthesurface，causing thematerialtoenterastateofplasticflowandultimatelyleadingtotheerosionand mushrooming ofthe projectileead.Additionallythesurface materialoftheprojectile wasstrippedduetothecutingactionof thehardaggegatesin theconcrete，resulting in severeabrasionof the projectilebody.Whencomparingthe structural responses ofprojectiles madeofdiferent materials，it was evidentthat material properties influenced theirbehavior.Compared to 30CrMnVE，9oo，onforitsheregthrdsdeterstaetiactpessooed lesserosionathe projectilehead.However，the inferiorshearresistanceand wear resistanceofDT190ledtosevere abrasion ontheprojectilebody.Themasslosspattmofaconical projectileisdiferent fromthatofasolidlong-rodprojectile，withthe laterconcentratedmainlyinteprojectileody.Teconicalfaredtaildesign，ilesppressingballsticdeflection，ied thecontactareabetwee theprojectile bodyandthetarget，enhancingtheabrasive and cutingactionsofaggregates and steel. Moreover，under high-speed penetration conditions，the erosionand mushrooming of the projectile head could reduce the penetrationdepth;thelesserosionatthehead，thegreaterthepenetrationdepth.Inexperiments，themaximumpenetration depth ofDT19o0 projectiles could reach up to nine times the length of the projectile.

Keywords：structural projectile; high-speed penetration;reinforced concrete; eroding; penetration depth

钢筋混凝土材料由于其良好的力学性能被广泛应用于各类军事建筑与防御工事（如指挥所、机库、油库等），这些具有重要战略价值的目标一直是作战打击及工程防护的研究重点[16。（剩余16159字）