Article(id=1323357807705207162, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1323357777711735694, 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=1078416000000, receivedDateStr=2004-03-05, revisedDate=1087574400000, revisedDateStr=2004-06-19, acceptedDate=null, acceptedDateStr=null, onlineDate=1793442688155, onlineDateStr=2026-10-31, pubDate=1117900800000, pubDateStr=2005-06-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793442688155, onlineIssueDateStr=2026-10-31, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793442688155, creator=13701087609, updateTime=1793442688155, updator=13701087609, issue=Issue{id=1323357777711735694, tenantId=1146029695717560320, journalId=1255847867265597444, year='2005', volume='19', issue='2', pageStart='97', pageEnd='192', issueExtLink='null', onlineDate='null', pubDate='1117900800000', pubDateStr='2005-06-05', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793442681005, creator='13701087609', updateTime=1793442889622, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1323358652777759206, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1323357777711735694, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1323358652777759207, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1323357777711735694, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=151, endPage=158, ext={EN=ArticleExt(id=1323357809429066107, articleId=1323357807705207162, tenantId=1146029695717560320, journalId=1255847867265597444, language=EN, title=Numerical Simulations on Buckling Failure of Preloaded Cylindrical Shell Irradiated by High Power Laser Beam, columnId=null, journalTitle=Chinese Journal of High Pressure Physics, columnName=null, runingTitle=null, highlight=null, articleAbstract=

With finite-element software ANSYS 7.0 and simple thermal-mechanical coupling constitutive relations, the buckling failure of preloaded shell irradiated by high power laser beam was studied by numerical simulations. Buckling mode and buckling critical loading were analysed for different preloading conditions. The influences of laser intensity, beam irradiation time, preloading conditions, shape and geometric parameters of shell on the buckling mode were discussed. The numerical results showed that: (1) the buckling deformation of the shell was concentrated on the area of laser spot and the radial buckling was the main buckling mode, (2) a linear relationship between buckling eigenvalue and the maximum temperature at the center of laser spot was approached, (3) the buckling failure of shell was attributed to the coupling effect of the material softenning and the radial deformation in the laser spot, and hence to raise the stiffness of the material would enhance the ability of anti-irradiation of structure substantially, (4) the effect was more obvious under internal preloading for different shapes of shell, and the cylindrical shell had larger buckling eigenvalue and higher security.

, authors=Ji WANG, Xiao-Jun WANG, Feng WANG, Kai ZHAO, authorsList=Ji WANG, Xiao-Jun WANG, Feng WANG, Kai ZHAO, authorCompany=null, correspAuthors=null, 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=1323357809634587004, articleId=1323357807705207162, tenantId=1146029695717560320, journalId=1255847867265597444, language=CN, title=强激光辐照下预载柱壳热屈曲失效的数值分析, columnId=0, journalTitle=高压物理学报, columnName=, runingTitle=null, highlight=null, articleAbstract=

采用有限元方法(ANSYS7.0)和简易的热力耦合本构关系,较系统地数值研究了预载柱壳受激光辐照时的热力响应和热屈曲失效行为,分析了几种壳体在不同预载条件下(轴压或内压)的屈曲模态和屈曲特征值,给出了屈曲模态和热屈曲失效与激光强度、辐照时间、预载条件和壳体几何尺度及形状间的定量或定性关系。计算结果表明:(1)屈曲失效行为主要集中在激光辐照区内且以径向屈曲为主。(2)在一定范围内,屈曲特征值与光斑中心点温度近似有线性关系。(3)激光辐照区内高温引起的材料软化和预载径向变形的耦合作用是柱壳发生热屈曲失效的根本原因,有效提高结构刚度,可使屈曲特征值提高。(4)壳体形状的改变对内压柱壳有更为明显的影响,其中圆柱形壳体屈曲特征值最大,因此具有较高的安全性。

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王吉(1979—),男,博士研究生.

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王吉(1979—),男,博士研究生.

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强激光辐照下预载柱壳热屈曲失效的数值分析
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王吉 , 王肖钧 , 王峰 , 赵凯
高压物理学报 | 2005,19(2): 151-158
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高压物理学报 | 2005 , 19 (2) : 151 -158
强激光辐照下预载柱壳热屈曲失效的数值分析
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王吉, 王肖钧, 王峰, 赵凯
作者信息
  • 中国科学技术大学力学与机械工程系,安徽 合肥 230026
作者简介:

王吉(1979—),男,博士研究生.

Numerical Simulations on Buckling Failure of Preloaded Cylindrical Shell Irradiated by High Power Laser Beam
Ji WANG, Xiao-Jun WANG, Feng WANG, Kai ZHAO
Affiliations
  • University of Science and Technology of China, Hefei 230026, China
出版时间: 2005-06-05
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采用有限元方法(ANSYS7.0)和简易的热力耦合本构关系,较系统地数值研究了预载柱壳受激光辐照时的热力响应和热屈曲失效行为,分析了几种壳体在不同预载条件下(轴压或内压)的屈曲模态和屈曲特征值,给出了屈曲模态和热屈曲失效与激光强度、辐照时间、预载条件和壳体几何尺度及形状间的定量或定性关系。计算结果表明:(1)屈曲失效行为主要集中在激光辐照区内且以径向屈曲为主。(2)在一定范围内,屈曲特征值与光斑中心点温度近似有线性关系。(3)激光辐照区内高温引起的材料软化和预载径向变形的耦合作用是柱壳发生热屈曲失效的根本原因,有效提高结构刚度,可使屈曲特征值提高。(4)壳体形状的改变对内压柱壳有更为明显的影响,其中圆柱形壳体屈曲特征值最大,因此具有较高的安全性。

激光辐照  /  圆柱壳  /  屈曲  /  有限元

With finite-element software ANSYS 7.0 and simple thermal-mechanical coupling constitutive relations, the buckling failure of preloaded shell irradiated by high power laser beam was studied by numerical simulations. Buckling mode and buckling critical loading were analysed for different preloading conditions. The influences of laser intensity, beam irradiation time, preloading conditions, shape and geometric parameters of shell on the buckling mode were discussed. The numerical results showed that: (1) the buckling deformation of the shell was concentrated on the area of laser spot and the radial buckling was the main buckling mode, (2) a linear relationship between buckling eigenvalue and the maximum temperature at the center of laser spot was approached, (3) the buckling failure of shell was attributed to the coupling effect of the material softenning and the radial deformation in the laser spot, and hence to raise the stiffness of the material would enhance the ability of anti-irradiation of structure substantially, (4) the effect was more obvious under internal preloading for different shapes of shell, and the cylindrical shell had larger buckling eigenvalue and higher security.

cylindrical shell  /  buckling  /  finite element  /  irradiated by high power laser beam
王吉, 王肖钧, 王峰, 赵凯. 强激光辐照下预载柱壳热屈曲失效的数值分析. 高压物理学报, 2005 , 19 (2) : 151 -158 .
Ji WANG, Xiao-Jun WANG, Feng WANG, Kai ZHAO. Numerical Simulations on Buckling Failure of Preloaded Cylindrical Shell Irradiated by High Power Laser Beam[J]. Chinese Journal of High Pressure Physics, 2005 , 19 (2) : 151 -158 .
  • 国家863计划重点实验室激光技术青年科学基金(20010501)
  • 计算物理国家重点实验室资助项目
参考文献 引证文献
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2005年第19卷第2期
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  • 接收时间:2004-03-05
  • 首发时间:2026-10-31
  • 出版时间:2005-06-05
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  • 收稿日期:2004-03-05
  • 修回日期:2004-06-19
基金
国家863计划重点实验室激光技术青年科学基金(20010501)
计算物理国家重点实验室资助项目
作者信息
    中国科学技术大学力学与机械工程系,安徽 合肥 230026
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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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