Article(id=1322944121089958088, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1322943429629588359, 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=1210521600000, receivedDateStr=2008-05-12, revisedDate=1223827200000, revisedDateStr=2008-10-13, acceptedDate=null, acceptedDateStr=null, onlineDate=1793344057580, onlineDateStr=2026-10-30, pubDate=1244995200000, pubDateStr=2009-06-15, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793344057580, onlineIssueDateStr=2026-10-30, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793344057580, creator=13701087609, updateTime=1793344057580, updator=13701087609, issue=Issue{id=1322943429629588359, tenantId=1146029695717560320, journalId=1255847867265597444, year='2009', volume='23', issue='3', pageStart='161', pageEnd='240', issueExtLink='null', onlineDate='null', pubDate='1244995200000', pubDateStr='2009-06-15', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793343892723, creator='13701087609', updateTime=1793343892723, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=196, endPage=202, ext={EN=ArticleExt(id=1322944121270313161, articleId=1322944121089958088, tenantId=1146029695717560320, journalId=1255847867265597444, language=EN, title=Study on Strain Rate Sensitivities of FCC Metals Based on Multi-Scale Analysis, columnId=null, journalTitle=Chinese Journal of High Pressure Physics, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Dislocation theory and molecular dynamics simulation were used to investigate the effect of atom properties on the strain-rate sensitivity of FCC metals. A method to analyze such effect is proposed. The stress dependence on dislocation velocity is identified as the key of such study and is obtained via 2-D MD simulations on the motion of an individual dislocation in FCC metals. Combining the simulation results with Orowan's relationship, it is concluded that strain rate sensitivities of FCC metals are mainly dependent on their atomic mass rather than the interatomic potential. The order of strain rate sensitivities of five FCC metals obtained by multi-scale analysis is consistent with the experimental results available.

, authors=Kun QIN1, 2, Li-Ming YANG2, Shi-Sheng HU1, authorsList=Kun QIN, Li-Ming YANG, Shi-Sheng HU, 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=1322944121467445450, articleId=1322944121089958088, tenantId=1146029695717560320, journalId=1255847867265597444, language=CN, title=基于多尺度分析的FCC金属应变率敏感性研究, columnId=0, journalTitle=高压物理学报, columnName=, runingTitle=null, highlight=null, articleAbstract=

采用位错理论和分子动力学模拟研究了金属原子性质对其宏观应变率敏感性的影响。依据位错运动的Orowan关系,认为金属中位错速度对应力的依赖关系是此研究的关键,并分析提出研究金属原子性质与应变率敏感性关系的分析方法。构建了一个中等规模的二维分子动力学模型,应用此模型对单个位错在FCC金属中的运动进行模拟。综合位错理论分析和分子动力学模拟结果得出结论:影响金属应变率敏感性的原子性质是其原子量而不是其原子势。依据此结论分析得到的FCC金属应变率敏感性排序与试验结果相符。

, authors=秦焜1, 2, 杨黎明2, 胡时胜1, authorsList=秦焜, 杨黎明, 胡时胜, authorCompany=null, correspAuthors=null, authorNote=

秦焜(1969—),男,博士研究生,主要从事材料冲击响应、材料力学性能多尺度研究. E-mail:

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基于多尺度分析的FCC金属应变率敏感性研究
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秦焜 1, 2 , 杨黎明 2 , 胡时胜 1
高压物理学报 | 2009,23(3): 196-202
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高压物理学报 | 2009 , 23 (3) : 196 -202
基于多尺度分析的FCC金属应变率敏感性研究
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秦焜1, 2 , 杨黎明2, 胡时胜1
作者信息
  • 1.中国科学技术大学近代力学系,安徽 合肥 230027
  • 2.宁波大学力学与材料科学研究中心,浙江 宁波 315211
作者简介:

秦焜(1969—),男,博士研究生,主要从事材料冲击响应、材料力学性能多尺度研究. E-mail:

Study on Strain Rate Sensitivities of FCC Metals Based on Multi-Scale Analysis
Kun QIN1, 2 , Li-Ming YANG2, Shi-Sheng HU1
Affiliations
  • 1.CAS Key Laboratory of Mechanical Behavior and Design of Materials, University of Science and Technology of China, Hefei 230027, China
  • 2.Mechanics and Materials Science Research Centre, Faculty of Engineering Ningbo University, Ningbo 315211, China
出版时间: 2009-06-15
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采用位错理论和分子动力学模拟研究了金属原子性质对其宏观应变率敏感性的影响。依据位错运动的Orowan关系,认为金属中位错速度对应力的依赖关系是此研究的关键,并分析提出研究金属原子性质与应变率敏感性关系的分析方法。构建了一个中等规模的二维分子动力学模型,应用此模型对单个位错在FCC金属中的运动进行模拟。综合位错理论分析和分子动力学模拟结果得出结论:影响金属应变率敏感性的原子性质是其原子量而不是其原子势。依据此结论分析得到的FCC金属应变率敏感性排序与试验结果相符。

应变率敏感性  /  位错理论  /  位错速度  /  分子动力学模拟

Dislocation theory and molecular dynamics simulation were used to investigate the effect of atom properties on the strain-rate sensitivity of FCC metals. A method to analyze such effect is proposed. The stress dependence on dislocation velocity is identified as the key of such study and is obtained via 2-D MD simulations on the motion of an individual dislocation in FCC metals. Combining the simulation results with Orowan's relationship, it is concluded that strain rate sensitivities of FCC metals are mainly dependent on their atomic mass rather than the interatomic potential. The order of strain rate sensitivities of five FCC metals obtained by multi-scale analysis is consistent with the experimental results available.

strain-rate sensitivity  /  dislocation theory  /  dislocation velocity  /  molecular dynamics simulation
秦焜, 杨黎明, 胡时胜. 基于多尺度分析的FCC金属应变率敏感性研究. 高压物理学报, 2009 , 23 (3) : 196 -202 .
Kun QIN, Li-Ming YANG, Shi-Sheng HU. Study on Strain Rate Sensitivities of FCC Metals Based on Multi-Scale Analysis[J]. Chinese Journal of High Pressure Physics, 2009 , 23 (3) : 196 -202 .
  • 宁波大学科研基金(XK200507; XK0609015)
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2009年第23卷第3期
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  • 接收时间:2008-05-12
  • 首发时间:2026-10-30
  • 出版时间:2009-06-15
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  • 收稿日期:2008-05-12
  • 修回日期:2008-10-13
基金
宁波大学科研基金(XK200507; XK0609015)
作者信息
    1.中国科学技术大学近代力学系,安徽 合肥 230027
    2.宁波大学力学与材料科学研究中心,浙江 宁波 315211
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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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