Article(id=1323703942726689178, tenantId=1146029695717560320, journalId=1255847867265597444, issueId=1323703935336329676, 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=1117555200000, receivedDateStr=2005-06-01, revisedDate=1135699200000, revisedDateStr=2005-12-28, acceptedDate=null, acceptedDateStr=null, onlineDate=1793525213176, onlineDateStr=2026-11-01, pubDate=1165248000000, pubDateStr=2006-12-05, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1793525213176, onlineIssueDateStr=2026-11-01, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1793525213176, creator=13701087609, updateTime=1793525213176, updator=13701087609, issue=Issue{id=1323703935336329676, tenantId=1146029695717560320, journalId=1255847867265597444, year='2006', volume='20', issue='4', pageStart='337', pageEnd='448', issueExtLink='null', onlineDate='null', pubDate='1165248000000', pubDateStr='2006-12-05', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1793525211414, creator='13701087609', updateTime=1793525211414, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext=null, issueFiles=null, downloadFileDto=null}, startPage=345, endPage=352, ext={EN=ArticleExt(id=1323703944400216475, articleId=1323703942726689178, tenantId=1146029695717560320, journalId=1255847867265597444, language=EN, title=Effective Viscosity Coefficients, Initial Mobile Dislocation Densities and Drag Stresses for Five Materials, columnId=null, journalTitle=Chinese Journal of High Pressure Physics, columnName=null, runingTitle=null, highlight=null, articleAbstract=

Based on the experimental results of the elastic precursor attenuation along with propagation distance, with rate-dependent constitutive relation including dislocation parameters, and according to the thermally activated dislocation motion model proposed by Gilman, the lower bounds of the initial mobile dislocation densities N0 and the drag stresses τ0 have been obtained for LY12-aluminum, MB2-magnesium and lead respectively on the order of 106 cm-2 and 0.1 GPa, but for stainless steel, N0 and τ0 are on the order of 108 cm-2 and 1.5 GPa. With the elastic precusor decay curve, the upper limits of the effective viscosity coefficient μ have been given also for LY12-aluminum and magnesium on the order of 103 Pa·s, and for 2#-iron and stainless steel on the order of 104 Pa·s.

, authors=Wan-Jia ZHANG, Cang-Li LIU, authorsList=Wan-Jia ZHANG, Cang-Li 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=1323703944601543068, articleId=1323703942726689178, tenantId=1146029695717560320, journalId=1255847867265597444, language=CN, title=几种材料的等效粘性系数、初始可动位错密度和拖曳应力, columnId=0, journalTitle=高压物理学报, columnName=, runingTitle=null, highlight=null, articleAbstract=

基于LY12铝、MB2镁、铅、2#铁和不锈钢等几种材料的弹性前驱波幅度随传播距离衰减的实验结果,应用含位错参量的速率相关本构方程,按照Gilman提议的位错运动速度的热激活模型,得出了LY12铝、MB2镁、铅的可动位错密度N0和拖曳应力τ0的下限值分别为106 cm-2和0.1 GPa量级,不锈钢的N0和τ0为108 cm-2和1.5 GPa量级。根据弹性前驱波幅度衰减曲线,还得出了2#铁、不锈钢的有效粘性系数μ的上限值为104 Pa·s量级。LY12铝、MB2镁的有效粘性系数μ的上限值为103 Pa·s量级。

, authors=张万甲, 刘仓理, authorsList=张万甲, 刘仓理, authorCompany=null, correspAuthors=null, authorNote=

张万甲(1936—),男,副研究员.

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张万甲(1936—),男,副研究员.

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张万甲(1936—),男,副研究员.

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几种材料的等效粘性系数、初始可动位错密度和拖曳应力
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张万甲 , 刘仓理
高压物理学报 | 2006,20(4): 345-352
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高压物理学报 | 2006 , 20 (4) : 345 -352
几种材料的等效粘性系数、初始可动位错密度和拖曳应力
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张万甲, 刘仓理
作者信息
  • 中国工程物理研究院流体物理研究所,四川 绵阳 621900
作者简介:

张万甲(1936—),男,副研究员.

Effective Viscosity Coefficients, Initial Mobile Dislocation Densities and Drag Stresses for Five Materials
Wan-Jia ZHANG, Cang-Li LIU
Affiliations
  • Institute of Fluid Physics, CAEP, Mianyang 621900, China
出版时间: 2006-12-05
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基于LY12铝、MB2镁、铅、2#铁和不锈钢等几种材料的弹性前驱波幅度随传播距离衰减的实验结果,应用含位错参量的速率相关本构方程,按照Gilman提议的位错运动速度的热激活模型,得出了LY12铝、MB2镁、铅的可动位错密度N0和拖曳应力τ0的下限值分别为106 cm-2和0.1 GPa量级,不锈钢的N0和τ0为108 cm-2和1.5 GPa量级。根据弹性前驱波幅度衰减曲线,还得出了2#铁、不锈钢的有效粘性系数μ的上限值为104 Pa·s量级。LY12铝、MB2镁的有效粘性系数μ的上限值为103 Pa·s量级。

等效粘性系数  /  可动位错密度  /  拖曳应力  /  速率相关本构方程

Based on the experimental results of the elastic precursor attenuation along with propagation distance, with rate-dependent constitutive relation including dislocation parameters, and according to the thermally activated dislocation motion model proposed by Gilman, the lower bounds of the initial mobile dislocation densities N0 and the drag stresses τ0 have been obtained for LY12-aluminum, MB2-magnesium and lead respectively on the order of 106 cm-2 and 0.1 GPa, but for stainless steel, N0 and τ0 are on the order of 108 cm-2 and 1.5 GPa. With the elastic precusor decay curve, the upper limits of the effective viscosity coefficient μ have been given also for LY12-aluminum and magnesium on the order of 103 Pa·s, and for 2#-iron and stainless steel on the order of 104 Pa·s.

effective viscosity coefficient  /  mobile dislocation density  /  drag stress  /  rate-dependent constitutive equation
张万甲, 刘仓理. 几种材料的等效粘性系数、初始可动位错密度和拖曳应力. 高压物理学报, 2006 , 20 (4) : 345 -352 .
Wan-Jia ZHANG, Cang-Li LIU. Effective Viscosity Coefficients, Initial Mobile Dislocation Densities and Drag Stresses for Five Materials[J]. Chinese Journal of High Pressure Physics, 2006 , 20 (4) : 345 -352 .

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2006年第20卷第4期
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  • 接收时间:2005-06-01
  • 首发时间:2026-11-01
  • 出版时间:2006-12-05
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  • 收稿日期:2005-06-01
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    中国工程物理研究院流体物理研究所,四川 绵阳 621900
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2种不同金属材料的力学参数
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species
占总种数比例
Percentage of
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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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