Article(id=1324026623737078215, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1324026623212790214, 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=1284912000000, receivedDateStr=2010-09-20, revisedDate=1290700800000, revisedDateStr=2010-11-26, acceptedDate=null, acceptedDateStr=null, onlineDate=1793602146324, onlineDateStr=2026-11-02, pubDate=1318608000000, pubDateStr=2011-10-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793602146324, onlineIssueDateStr=2026-11-02, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793602146324, creator=13701087609, updateTime=1793602146324, updator=13701087609, issue=Issue{id=1324026623212790214, tenantId=1146029695717560320, journalId=1255847867265597444, year='2011', volume='25', issue='5', pageStart='385', pageEnd='480', issueExtLink='null', onlineDate='null', pubDate='1318608000000', pubDateStr='2011-10-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793602146198, creator='13701087609', updateTime=1793602856645, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1324029603165110532, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1324026623212790214, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1324029603165110533, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1324026623212790214, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=444, endPage=450, ext={EN=ArticleExt(id=1324026625406411208, articleId=1324026623737078215, tenantId=1146029695717560320, journalId=1255847867265597444, language=EN, title=Dynamic Mechanical Behaviors of Soil under Impact Loads, columnId=null, journalTitle=Chinese Journal of High Pressure Physics, columnName=null, runingTitle=null, highlight=null, articleAbstract=

The test of the impact characteristic of soil is made on split Hopkinson pressure bar at various strain-rates. The dynamic mechanics properties and the strain-rate effect of soil are discussed. Based on the characteristics of measured dynamic stress-strain curves, as well as preparatory simulation, a new viscoelastic damage model has been introduced. A linear spring is put to parallel to two Maxwell units with different relaxing time to express distinct plastic flow. In the constitutive model, one Maxwell unit with low relaxing time is used to describe the low strain-rate response of soil; and the other one with high relaxing time is used to describe the high strain-rate response of soil. Simulated stress-strain curves using the model is of good consistency with measured curves, and the simulated parameters indicate that the response of the low strain-rate of soil is just the same as that of concrete. Howevwe, the response of the high strain-rate of soil is much more violent than that of concrete.

, authors=Zhi-Wu ZHU1, 2, Jian-Guo NING3, Xu LIU1, authorsList=Zhi-Wu ZHU, Jian-Guo NING, Xu LIU, 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=1324026625658069449, articleId=1324026623737078215, tenantId=1146029695717560320, journalId=1255847867265597444, language=CN, title=冲击载荷下土的动态力学性能研究, columnId=null, journalTitle=高压物理学报, columnName=, runingTitle=null, highlight=null, articleAbstract=

利用分离式霍普金森压杆(Split Hopkinson Pressure Bar,SHPB)技术,研究了土体在不同应变率条件下的冲击动态力学性能,发现土体有明显的应变率效应,与静载相比,冲击载荷下土的动强度和动模量均有很大的提高。根据实验曲线的特征,以一根线性弹簧和两个不同松弛时间的Maxwell体并联的粘弹性模型来表达土体的损伤型粘弹性本构模型,两个Maxwell体分别表示土体的低应变率响应和高应变率响应,模型的数值拟合曲线与实测动态本构曲线具有较好的一致性。拟合参数表明,土体对低应变率的响应与混凝土相同,对高应变率的敏感性远远高于混凝土。

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朱志武(1974—),男,博士(后),副教授,主要从事土体材料本构关系研究. E-mail:

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朱志武(1974—),男,博士(后),副教授,主要从事土体材料本构关系研究. E-mail:

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冲击载荷下土的动态力学性能研究
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朱志武 1, 2 , 宁建国 3 , 刘煦 1
高压物理学报 | 2011,25(5): 444-450
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高压物理学报 | 2011 , 25 (5) : 444 -450
冲击载荷下土的动态力学性能研究
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朱志武1, 2 , 宁建国3, 刘煦1
作者信息
  • 1.西南交通大学力学与工程学院,四川 成都 610031
  • 2.冻土工程国家重点实验室,甘肃 兰州 730000
  • 3.北京理工大学爆炸科学与技术国家重点实验室,北京 100081
作者简介:

朱志武(1974—),男,博士(后),副教授,主要从事土体材料本构关系研究. E-mail:

Dynamic Mechanical Behaviors of Soil under Impact Loads
Zhi-Wu ZHU1, 2 , Jian-Guo NING3, Xu LIU1
Affiliations
  • 1.School of Mechanics and Engineering, Southwest Jiaotong University, Chengdu 610031, China
  • 2.State Key Laboratory of Frozen Soil Engineering, Lanzhou 730000, China
  • 3.State Key Laboratory of Explosion Science and Technology, Beijing Institute of Technology, Beijing 100081, China
出版时间: 2011-10-15
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利用分离式霍普金森压杆(Split Hopkinson Pressure Bar,SHPB)技术,研究了土体在不同应变率条件下的冲击动态力学性能,发现土体有明显的应变率效应,与静载相比,冲击载荷下土的动强度和动模量均有很大的提高。根据实验曲线的特征,以一根线性弹簧和两个不同松弛时间的Maxwell体并联的粘弹性模型来表达土体的损伤型粘弹性本构模型,两个Maxwell体分别表示土体的低应变率响应和高应变率响应,模型的数值拟合曲线与实测动态本构曲线具有较好的一致性。拟合参数表明,土体对低应变率的响应与混凝土相同,对高应变率的敏感性远远高于混凝土。

土  /  霍普金森压杆  /  冲击  /  动态  /  高应变率

The test of the impact characteristic of soil is made on split Hopkinson pressure bar at various strain-rates. The dynamic mechanics properties and the strain-rate effect of soil are discussed. Based on the characteristics of measured dynamic stress-strain curves, as well as preparatory simulation, a new viscoelastic damage model has been introduced. A linear spring is put to parallel to two Maxwell units with different relaxing time to express distinct plastic flow. In the constitutive model, one Maxwell unit with low relaxing time is used to describe the low strain-rate response of soil; and the other one with high relaxing time is used to describe the high strain-rate response of soil. Simulated stress-strain curves using the model is of good consistency with measured curves, and the simulated parameters indicate that the response of the low strain-rate of soil is just the same as that of concrete. Howevwe, the response of the high strain-rate of soil is much more violent than that of concrete.

soil  /  Hopkinson pressure bar  /  impact  /  dynamic  /  high strain-rate
朱志武, 宁建国, 刘煦. 冲击载荷下土的动态力学性能研究. 高压物理学报, 2011 , 25 (5) : 444 -450 .
Zhi-Wu ZHU, Jian-Guo NING, Xu LIU. Dynamic Mechanical Behaviors of Soil under Impact Loads[J]. Chinese Journal of High Pressure Physics, 2011 , 25 (5) : 444 -450 .
  • 国家自然科学基金(11172251)
  • 冻土工程国家重点实验室开放基金(SKLFSE201001)
  • 中央高校基本科研业务费专项资金资助项目(SWJTU09CX069)
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2011年第25卷第5期
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  • 接收时间:2010-09-20
  • 首发时间:2026-11-02
  • 出版时间:2011-10-15
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  • 收稿日期:2010-09-20
  • 修回日期:2010-11-26
基金
国家自然科学基金(11172251)
冻土工程国家重点实验室开放基金(SKLFSE201001)
中央高校基本科研业务费专项资金资助项目(SWJTU09CX069)
作者信息
    1.西南交通大学力学与工程学院,四川 成都 610031
    2.冻土工程国家重点实验室,甘肃 兰州 730000
    3.北京理工大学爆炸科学与技术国家重点实验室,北京 100081
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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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