Article(id=1323705002849600443, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1323704973204259532, articleNumber=null, orderNo=null, doi=null, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1149609600000, receivedDateStr=2006-06-07, revisedDate=1159545600000, revisedDateStr=2006-09-30, acceptedDate=null, acceptedDateStr=null, onlineDate=1793525465929, onlineDateStr=2026-11-01, pubDate=1180972800000, pubDateStr=2007-06-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793525465929, onlineIssueDateStr=2026-11-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793525465929, creator=13701087609, updateTime=1793525465929, updator=13701087609, issue=Issue{id=1323704973204259532, tenantId=1146029695717560320, journalId=1255847867265597444, year='2007', volume='21', issue='2', pageStart='113', pageEnd='224', issueExtLink='null', onlineDate='null', pubDate='1180972800000', pubDateStr='2007-06-05', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793525458861, creator='13701087609', updateTime=1793525458861, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=165, endPage=172, ext={EN=ArticleExt(id=1323705003021566908, articleId=1323705002849600443, tenantId=1146029695717560320, journalId=1255847867265597444, language=EN, title=Three-Dimensional Numerical Simulation of the High Velocity Rod-Shaped Projectile, columnId=null, journalTitle=Chinese Journal of High Pressure Physics, columnName=null, runingTitle=null, highlight=null, articleAbstract=

The software of LS-DYNA was applied to simulate the formation process of a high velocity rod-shaped projectile from the modified hemispherical liner. Its formation mechanism was analyzed. It was demonstrated that the initiation methods such as center point initiation, four-point initiation and peripheral initiation had an effect on the formation and the performance parameters of the high velocity rod-shaped projectile. The results of numerical computation indicate that the shaped charge with the modified hemispherical liner can form the rod-shaped penetrator with high velocity, large slenderness and rational mass distribution. Its formation mechanism combines that of the shaped jet and the over-turned explosively formed projectile, i.e. the upper half of liner directly collapses along the axial line and the lower half of liner is gradually overturned when closing the axial line. There are some differences of the shape and performance parameters of the rod-shaped penetrators formed under the different initiation methods. The peripheral initiation is the best excellent initiation method. The experimental result shows a good agreement with results of numerical simulations.

, authors=Cheng-Bing LI1, Ming-Jing PEI2, Zhao-Wu SHEN1, authorsList=Cheng-Bing LI, Ming-Jing PEI, Zhao-Wu SHEN, authorCompany=null, correspAuthors=Zhao-Wu SHEN, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1323705003239670717, articleId=1323705002849600443, tenantId=1146029695717560320, journalId=1255847867265597444, language=CN, title=高速杆式弹丸三维数值模拟, columnId=0, journalTitle=高压物理学报, columnName=, runingTitle=null, highlight=null, articleAbstract=

应用LS-DYNA动力学分析软件对变球缺型罩装药结构下高速杆式弹丸的形成过程进行数值模拟研究,揭示了其成型机理,并研究了中心点起爆、四点同时起爆和环形起爆等三种起爆方式对高速杆式侵彻体的成型和性能参数的影响,得到了弹体的速度分布。数值计算结果显示:变球缺型罩装药结构能形成速度高、长径比大、质量分布合理的高速杆式侵彻体,其成型机理兼有聚能射流和翻转型爆炸成型弹丸的特点,即上半部罩微元直接向轴线压合,下半部罩微元向轴线压合时逐渐向后翻转变形。不同起爆方式下所形成的高速杆式弹丸的形状和性能参数有所不同,其中环形起爆所形成的弹体性能参数最优。实验结果所反映的起爆方式的影响规律与数值计算结果是一致的。

, authors=李成兵1, 裴明敬2, 沈兆武1, authorsList=李成兵, 裴明敬, 沈兆武, authorCompany=null, correspAuthors=沈兆武, authorNote=

李成兵(1977—),男,博士研究生,主要从事爆炸力学研究. E-mail:

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沈兆武,男,教授,博士生导师,主要从事爆炸力学研究. E-mail:
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李成兵(1977—),男,博士研究生,主要从事爆炸力学研究. E-mail:

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高速杆式弹丸三维数值模拟
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李成兵 1 , 裴明敬 2 , 沈兆武 1
高压物理学报 | 2007,21(2): 165-172
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高压物理学报 | 2007 , 21 (2) : 165 -172
高速杆式弹丸三维数值模拟
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李成兵1 , 裴明敬2, 沈兆武1
作者信息
  • 1.中国科学技术大学力学和机械工程系,安徽 合肥 230026
  • 2.西北核技术研究所,陕西 西安 710024
通讯作者:
沈兆武,男,教授,博士生导师,主要从事爆炸力学研究. E-mail:
作者简介:

李成兵(1977—),男,博士研究生,主要从事爆炸力学研究. E-mail:

Three-Dimensional Numerical Simulation of the High Velocity Rod-Shaped Projectile
Cheng-Bing LI1 , Ming-Jing PEI2, Zhao-Wu SHEN1
Affiliations
  • 1.Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, China
  • 2.Northwest Institute of Nuclear and Technology, Xi'an 710024, China
出版时间: 2007-06-05
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应用LS-DYNA动力学分析软件对变球缺型罩装药结构下高速杆式弹丸的形成过程进行数值模拟研究,揭示了其成型机理,并研究了中心点起爆、四点同时起爆和环形起爆等三种起爆方式对高速杆式侵彻体的成型和性能参数的影响,得到了弹体的速度分布。数值计算结果显示:变球缺型罩装药结构能形成速度高、长径比大、质量分布合理的高速杆式侵彻体,其成型机理兼有聚能射流和翻转型爆炸成型弹丸的特点,即上半部罩微元直接向轴线压合,下半部罩微元向轴线压合时逐渐向后翻转变形。不同起爆方式下所形成的高速杆式弹丸的形状和性能参数有所不同,其中环形起爆所形成的弹体性能参数最优。实验结果所反映的起爆方式的影响规律与数值计算结果是一致的。

爆炸力学  /  高速杆式弹丸  /  变球缺型药型罩  /  起爆方式  /  数值模拟

The software of LS-DYNA was applied to simulate the formation process of a high velocity rod-shaped projectile from the modified hemispherical liner. Its formation mechanism was analyzed. It was demonstrated that the initiation methods such as center point initiation, four-point initiation and peripheral initiation had an effect on the formation and the performance parameters of the high velocity rod-shaped projectile. The results of numerical computation indicate that the shaped charge with the modified hemispherical liner can form the rod-shaped penetrator with high velocity, large slenderness and rational mass distribution. Its formation mechanism combines that of the shaped jet and the over-turned explosively formed projectile, i.e. the upper half of liner directly collapses along the axial line and the lower half of liner is gradually overturned when closing the axial line. There are some differences of the shape and performance parameters of the rod-shaped penetrators formed under the different initiation methods. The peripheral initiation is the best excellent initiation method. The experimental result shows a good agreement with results of numerical simulations.

mechanics of explosion  /  high velocity rod-shaped projectile  /  modified hemispherical liner  /  initiation method  /  numerical simulation
李成兵, 裴明敬, 沈兆武. 高速杆式弹丸三维数值模拟. 高压物理学报, 2007 , 21 (2) : 165 -172 .
Cheng-Bing LI, Ming-Jing PEI, Zhao-Wu SHEN. Three-Dimensional Numerical Simulation of the High Velocity Rod-Shaped Projectile[J]. Chinese Journal of High Pressure Physics, 2007 , 21 (2) : 165 -172 .
  • 国防科技预研项目(413260401)
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2007年第21卷第2期
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  • 接收时间:2006-06-07
  • 首发时间:2026-11-01
  • 出版时间:2007-06-05
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  • 收稿日期:2006-06-07
  • 修回日期:2006-09-30
基金
国防科技预研项目(413260401)
作者信息
    1.中国科学技术大学力学和机械工程系,安徽 合肥 230026
    2.西北核技术研究所,陕西 西安 710024

通讯作者:

沈兆武,男,教授,博士生导师,主要从事爆炸力学研究. E-mail:
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鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
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