Article(id=1322943322813247688, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1322943296305247200, 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=1203955200000, receivedDateStr=2008-02-26, revisedDate=1213891200000, revisedDateStr=2008-06-20, acceptedDate=null, acceptedDateStr=null, onlineDate=1793343867256, onlineDateStr=2026-10-30, pubDate=1239724800000, pubDateStr=2009-04-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793343867256, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793343867256, creator=13701087609, updateTime=1793343867256, updator=13701087609, issue=Issue{id=1322943296305247200, tenantId=1146029695717560320, journalId=1255847867265597444, year='2009', volume='23', issue='2', pageStart='81', pageEnd='160', issueExtLink='null', onlineDate='null', pubDate='1239724800000', pubDateStr='2009-04-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343860936, creator='13701087609', updateTime=1793343860936, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=111, endPage=116, ext={EN=ArticleExt(id=1322943323027157193, articleId=1322943322813247688, tenantId=1146029695717560320, journalId=1255847867265597444, language=EN, title=Numerical Simulation of Dynamic Response of Concrete Subjected to Internal Load of Blast, columnId=null, journalTitle=Chinese Journal of High Pressure Physics, columnName=null, runingTitle=null, highlight=null, articleAbstract=

It is still difficult to give the all-sided and accurate description of explosion damaging effects according to experiment. In this paper, by using nonlinear dynamic finite-element program ANSYS/LS-DYNA, which can deal with fluid-solid coupling algorithm, dynamic response of concrete subjected to internal blast loading such as development of cavitations was simulated. The size of the blast pit, the damage area, pressure contour and stress-time curve in concrete with or without steel composite were analyzed. Also, the damage mechanism of concrete-steel plate composition under explosive loading was studied. Research showed that the fluid-solid coupling algorithm can avoid element abnormality and mesh vanishing, and also improve the efficient. The calculated results described the concrete breakage of the center blasting cavity compression and the free surface tension spalling, which were in agreement with the theoretical results. Synchronously, due to the steel plain reinforcing, the steel plate composite can decrease the pull stress and restrain the development of crack, thereby the capability of the prevent-collapse and integrality of the structure will be improved.

, authors=Bing-Lin LENG1, 2, Jin-Yu XU1, 3, Hui-Xiang SUN1, Jie XU4, authorsList=Bing-Lin LENG, Jin-Yu XU, Hui-Xiang SUN, Jie XU, authorCompany=null, correspAuthors=Jin-Yu XU, 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=1322943323245261002, articleId=1322943322813247688, tenantId=1146029695717560320, journalId=1255847867265597444, language=CN, title=内部爆炸载荷作用下混凝土动力响应的数值模拟, columnId=null, journalTitle=高压物理学报, columnName=, runingTitle=null, highlight=null, articleAbstract=

目前,采用实验方法对爆炸载荷破坏效应进行全面、准确描述仍是一个难题。运用ANSYS/LS-DYNA非线性显式动力学有限元程序,采用流固耦合算法,对混凝土在内部爆炸载荷作用下的空腔形成和发展规律等动力响应问题进行了数值模拟。通过实际算例,比较研究了混凝土敷设钢板与否对成坑大小、损伤区、压力云图以及应力时程曲线等的影响,进一步研究了有钢板加固时混凝土在爆炸荷载作用下的破坏机理。研究表明:采用流固耦合算法可以避免由于物质的大变形引起的单元畸变和网格消蚀等问题,提高了计算效率;很好地模拟了混凝土内部爆炸时,中心爆炸空腔压缩面和自由面的拉伸层裂破坏过程,且与理论计算值吻合较好;通过表面敷设钢板,可以减小混凝土的拉应力峰值,抑制混凝土中裂纹的发展,从而提高其防震塌能力以及结构的完整性。

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冷冰林(1984—),男,硕士研究生,主要从事防护工程研究. E-mail:

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许金余(1963—),男,博士,教授,博士生导师,主要从事结构工程和防护工程研究. E-mail:
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内部爆炸载荷作用下混凝土动力响应的数值模拟
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冷冰林 1, 2 , 许金余 1, 3 , 孙惠香 1 , 徐杰 4
高压物理学报 | 2009,23(2): 111-116
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内部爆炸载荷作用下混凝土动力响应的数值模拟
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冷冰林1, 2 , 许金余1, 3 , 孙惠香1, 徐杰4
作者信息
  • 1.空军工程大学工程学院,陕西 西安 710038
  • 2.95080部队,广东 汕头 515823
  • 3.西北工业大学,陕西 西安 710000
  • 4.95538部队,四川 新津 611430
通讯作者:
许金余(1963—),男,博士,教授,博士生导师,主要从事结构工程和防护工程研究. E-mail:
作者简介:

冷冰林(1984—),男,硕士研究生,主要从事防护工程研究. E-mail:

Numerical Simulation of Dynamic Response of Concrete Subjected to Internal Load of Blast
Bing-Lin LENG1, 2 , Jin-Yu XU1, 3 , Hui-Xiang SUN1, Jie XU4
Affiliations
  • 1.The Engineering Institute, Air Force Engineering University, Xi'an 710038, China
  • 2.PLA Unit 95080, Shantou 515823, China
  • 3.Northwestern Polytechnical University, Xi'an 710000, China
  • 4.PLA Unit 95538, Xinjin 611430, China
出版时间: 2009-04-15
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目前,采用实验方法对爆炸载荷破坏效应进行全面、准确描述仍是一个难题。运用ANSYS/LS-DYNA非线性显式动力学有限元程序,采用流固耦合算法,对混凝土在内部爆炸载荷作用下的空腔形成和发展规律等动力响应问题进行了数值模拟。通过实际算例,比较研究了混凝土敷设钢板与否对成坑大小、损伤区、压力云图以及应力时程曲线等的影响,进一步研究了有钢板加固时混凝土在爆炸荷载作用下的破坏机理。研究表明:采用流固耦合算法可以避免由于物质的大变形引起的单元畸变和网格消蚀等问题,提高了计算效率;很好地模拟了混凝土内部爆炸时,中心爆炸空腔压缩面和自由面的拉伸层裂破坏过程,且与理论计算值吻合较好;通过表面敷设钢板,可以减小混凝土的拉应力峰值,抑制混凝土中裂纹的发展,从而提高其防震塌能力以及结构的完整性。

爆炸  /  混凝土  /  数值模拟  /  有限元  /  爆炸空腔

It is still difficult to give the all-sided and accurate description of explosion damaging effects according to experiment. In this paper, by using nonlinear dynamic finite-element program ANSYS/LS-DYNA, which can deal with fluid-solid coupling algorithm, dynamic response of concrete subjected to internal blast loading such as development of cavitations was simulated. The size of the blast pit, the damage area, pressure contour and stress-time curve in concrete with or without steel composite were analyzed. Also, the damage mechanism of concrete-steel plate composition under explosive loading was studied. Research showed that the fluid-solid coupling algorithm can avoid element abnormality and mesh vanishing, and also improve the efficient. The calculated results described the concrete breakage of the center blasting cavity compression and the free surface tension spalling, which were in agreement with the theoretical results. Synchronously, due to the steel plain reinforcing, the steel plate composite can decrease the pull stress and restrain the development of crack, thereby the capability of the prevent-collapse and integrality of the structure will be improved.

blast loading  /  concrete  /  numerical simulation  /  finite-element method  /  explosive cavitation
冷冰林, 许金余, 孙惠香, 徐杰. 内部爆炸载荷作用下混凝土动力响应的数值模拟. 高压物理学报, 2009 , 23 (2) : 111 -116 .
Bing-Lin LENG, Jin-Yu XU, Hui-Xiang SUN, Jie XU. Numerical Simulation of Dynamic Response of Concrete Subjected to Internal Load of Blast[J]. Chinese Journal of High Pressure Physics, 2009 , 23 (2) : 111 -116 .
  • 国家自然科学基金(10372084)
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2009年第23卷第2期
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文章信息
  • 接收时间:2008-02-26
  • 首发时间:2026-10-30
  • 出版时间:2009-04-15
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出版历史
  • 收稿日期:2008-02-26
  • 修回日期:2008-06-20
基金
国家自然科学基金(10372084)
作者信息
    1.空军工程大学工程学院,陕西 西安 710038
    2.95080部队,广东 汕头 515823
    3.西北工业大学,陕西 西安 710000
    4.95538部队,四川 新津 611430

通讯作者:

许金余(1963—),男,博士,教授,博士生导师,主要从事结构工程和防护工程研究. E-mail:
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2种不同金属材料的力学参数
科
Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)
属
Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
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
栓菌属 Trametes 5 2.39
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