大气/钢靶板交界处对平行入射聚能射流干扰的数值模拟

陈少辉; 李治源; 雷彬; 吕庆敖

doi:10.11883/1001-1455(2011)06-0630-05

大气/钢靶板交界处对平行入射聚能射流干扰的数值模拟

doi: 10.11883/1001-1455(2011)06-0630-05

1.
军械工程学院,河北石家庄050003

详细信息

通讯作者:
陈少辉

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出版历程
- 刊出日期: 2011-11-25

Numericalsimulationofair/steeltargetinterface effectsonparallelinjectingshapedchargejet

1.
OrdnanceEngineeringCollege,Shijiazhuang050003,Hebei,China

More Information

Corresponding author: CHEN Shao-hui

摘要

摘要: 利用非线性动力学软件LS-DYNA,对聚能射流平行入射大气/钢靶板交界处的侵彻过程进行了数值模拟。通过分析数值模拟过程和结果,讨论了聚能射流头部速度和碰撞出口处横向速度的变化规律。结果表明:大气/钢靶板交界处不仅降低了聚能射流头部的轴向速度,而且使射流头部产生横向偏移,最大速度达到约1.8km/s;后续射流横向偏移速度逐渐减小,导致聚能射流提前断裂,未能形成连续侵彻。因此,大气/ 钢靶板交界处对聚能射流的头部起到了明显的干扰作用,可有效降低射流的侵彻能力。
- 爆炸力学 /
- 聚能射流 /
- LS-DYNA /
- 干扰 /
- 侵彻 /
- 横向速度
Abstract: BasedonthenonlineardynamicssoftwareLS-DYNA,thecompleteprocessofjetparallel penetratingair/steeltargetinterfacewasnumericallysimulated.Byanalyzingtheprocessandresultof numericalsimulation,thevelocityoftheshapedchargejettipandthetransversevelocityafterimpact werediscussed.Theresultsshowthatattheair/steeltargetinterfacetheaxialvelocityoftheshaped chargejettipdecreasesevidentlyandtheshapedchargejettipisreducedtomovingtransversely,the highesttransversevelocityofwhichisabout1.8km/s;thatthetransversevelocitiesofthesubsequentjetsdecreasegraduallyandthejetdisruptionisantedated. Consequently,theair/steeltargetinterfacecanmarkedlydisturbtheshapedchargejettipandeffectivelyweakenthejetpenetration.
- mechanicsofexplosion /
- shapedcharge /
- LS-DYNA /
- disruption /
- penetration /
- transverse velocity