先进钻地弹高速侵彻实验中质量磨蚀金相分析

何丽灵; 陈小伟; 范瑛

doi:10.11883/1001-1455(2012)05-0515-08

先进钻地弹高速侵彻实验中质量磨蚀金相分析

doi: 10.11883/1001-1455(2012)05-0515-08

1.
中国工程物理研究院总体工程研究所,四川绵阳621900

详细信息

通讯作者:
陈小伟

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出版历程
- 刊出日期: 2012-09-25

Metallographicobservationofreduced-scaleadvancedEPW afterhigh-speedpenetration

1.
InstituteofStructuralMechanics,ChinaAcademyofEngineeringPhysics,

More Information

Corresponding author: CHEN Xiao-wei

摘要

摘要: 开展2组先进钻地缩比弹高速侵彻混凝土实验,侵彻速度在1130~1650m/s之间。针对弹体结构特点,金相分析了侵彻后剩余弹体,发现弹体与靶接触的表面(包括弹头和壳体段)均存在明显热影响区 (Heataffectedzone,HAZ),而与靶脱离接触部分未发现明显热影响区,因而弹靶相互作用是热影响区产生的主要原因。在弹尖部位存在少量绝热剪切带(Adiabaticshearingband,ASB),其对弹体质量损失有一定贡献, 但在实验撞击速度范围内其影响有限。ASB可能引起弹尖非对称磨蚀,进而降低弹体侵彻性能。
- 爆炸力学 /
- 高速侵彻 /
- 先进钻地缩比弹 /
- 热影响区 /
- 绝热剪切带 /
- 金相分析
Abstract: Inordertoenhancethestructuralstabilityofearthpenetrationwarhead (EPW)inhighspeedpenetration, theadvancedEPW wasdesigned.Theperformanceofthereduced-scaleadvanced EPW wasexperimentallystudiedduringthestrikingvelocitybetween1130~1650m/s.Theresidual projectileswerestudiedbymetallography.Itisfoundthattheheataffectedzone(HAZ)isdistributed aroundtheprojectilesurfacewheretheprojectileandtargetcontact,includingtheprojectilenoseand shank.ThereisnosignificantHAZintheareawheretheprojectileandtargetoffcontact.ItisconcludedthattheinteractionbetweentargetandprojectilebringsHAZin. Ontheotherhand,thereare severaladiabaticshearingbands(ASBs)distributedattheprojectilenosetip.AlthoughASBhaspositivecontributiontotheprojectilemassloss, theinfluencecanbeneglectedduringtheexperimental strikingvelocityrangeduetotherarenumberofASBandthelimiteddistributionarea.However, ASBmayleadtothenonsymmetricalabrasionofpenetratorandthendecreasetheperformanceofprojectileathigherpenetrationvelocity.
- mechanicsofexplosion /
- high-speedpenetration /
- advancedreduced-scaleEPW /
- heataffectedzone /
- adiabaticshearingband /
- metallographicobservation