Article(id=1156264149500945330, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156264148657886112, articleNumber=null, orderNo=null, doi=10.12404/j.issn.1671-1815.2308710, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1699286400000, receivedDateStr=2023-11-07, revisedDate=1732464000000, revisedDateStr=2024-11-25, acceptedDate=null, acceptedDateStr=null, onlineDate=1753604455590, onlineDateStr=2025-07-27, pubDate=1740672000000, pubDateStr=2025-02-28, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1753604455590, onlineIssueDateStr=2025-07-27, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1753604455590, creator=13701087609, updateTime=1753604455590, updator=13701087609, issue=Issue{id=1156264148657886112, tenantId=1146029695717560320, journalId=1146123166801305609, year='2025', volume='25', issue='6', pageStart='2193', pageEnd='2636', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1753604455388, creator=13701087609, updateTime=1753771257443, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1156963767234945803, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156264148657886112, language=EN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1156963767234945804, tenantId=1146029695717560320, journalId=1146123166801305609, issueId=1156264148657886112, language=CN, specialIssueTitle=, coverIllustrator=, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=2218, endPage=2226, ext={EN=ArticleExt(id=1156264150021039029, articleId=1156264149500945330, tenantId=1146029695717560320, journalId=1146123166801305609, language=EN, title=Dynamic Fracture Behavior of Granite with Double Elliptical Defects under Impact Load, columnId=1156264149949735860, journalTitle=Science Technology and Engineering, columnName=Papers·Mechanics, runingTitle=null, highlight=null, articleAbstract=
In order to study the failure mode and energy dissipation law of granite with double elliptical defects, dynamic splitting tensile experiments were conducted on granite with double elliptical defect angles of 0°, 45°, 90°, and 135° using a SHPB(split Hopkinson bar) device. The relationship between the angle and spacing of double elliptical defects, as well as the failure morphology and energy of granite, was explored. The results show that when the distance between double elliptical defects remains constant, the larger the included angle, the easier the specimen is to fracture. When the angle remains constant, the spacing increases and the rock sample is more prone to fracture. The dissipated energy density of the specimen decreases with the increase of the included angle, and the downward trend gradually tends to be gentle. The failure mode of the specimen is highly sensitive to the angle, that is, as the angle increases, the degree of fragmentation of the rock sample gradually intensifies, the symmetry of the fragments disappears, the wedge effect gradually becomes obvious, and the plasticity increases. When the included angle exceeds 90°, the degree of fragmentation begins to decrease again, and the rock sample exhibits symmetrical fracture.
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为研究含双椭圆缺陷花岗岩的破坏形态及能量耗散规律,利用分离式霍普金森杆(split Hopkinson pressure bar,SHPB)装置,分别对双椭圆缺陷夹角为0°、45°、90°、135°的花岗岩试件进行了动态劈裂拉伸实验,探讨了双椭圆缺陷夹角、缺陷间距与花岗岩破坏形态及能量之间的关系。结果表明:双椭圆缺陷间距不变时,夹角越大,试件越容易断裂;夹角不变时,间距增大,岩样更容易断裂。试件的耗散能密度随夹角的增大而降低,且下降趋势逐渐趋于平缓。试件的破坏形态对夹角的敏感程度较高,即随着夹角的增大,岩样破碎程度逐渐加剧,碎块对称性消失,楔体效应逐渐明显,塑性增强;当夹角超过90°时,破碎程度又开始减小,岩样又呈对称断裂。
, correspAuthors=彭麟智, authorNote=null, correspAuthorsNote=
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1 中国矿业大学(北京)力学与建筑工程学院, 北京 100083, bio={"content":"
徐胜男(1997—),女,汉族,山东威海人,博士研究生。研究方向:岩土工程。E-mail:1192124239@qq.com。
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徐胜男(1997—),女,汉族,山东威海人,博士研究生。研究方向:岩土工程。E-mail:1192124239@qq.com。
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试件G-15-45-2的应力变化曲线, figureFileSmall=QHqGZKlIhtHOCtJWDsr+ww==, figureFileBig=El4jVMeAZlKNRfkorAKWtQ==, tableContent=null), ArticleFig(id=1233422557626552347, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=EN, label=Fig.4, caption=
Dissipated energy density change, figureFileSmall=GPldqpCXhM8gmcUvv3qDJw==, figureFileBig=lltWv76LbLp8hLxl0PsdmA==, tableContent=null), ArticleFig(id=1233422557748187168, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=CN, label=图4, caption=
耗散能密度变化, figureFileSmall=GPldqpCXhM8gmcUvv3qDJw==, figureFileBig=lltWv76LbLp8hLxl0PsdmA==, tableContent=null), ArticleFig(id=1233422559249748011, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=EN, label=Table 1, caption=
Physical and mechanical parameters of granite
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| ρ/(kg·m-3) | σc/MPa | σt/MPa | Ed/GPa | Gd/GPa | μd | |
| 2 627.7 | 113.59 | 7.65 | 50.17 | 20.56 | 0.22 | |
), ArticleFig(id=1233422559396548668, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=CN, label=表1, caption=
花岗岩物理力学参数
, figureFileSmall=null, figureFileBig=null, tableContent=
| ρ/(kg·m-3) | σc/MPa | σt/MPa | Ed/GPa | Gd/GPa | μd | |
| 2 627.7 | 113.59 | 7.65 | 50.17 | 20.56 | 0.22 | |
), ArticleFig(id=1233422559526572103, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=EN, label=Table 2, caption=
Study on the energy characteristics of granite SHPB experiment
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试件编号 | 入射能 量/J | 反射能 量/J | 透射能 量/J | 耗散能 量/J | 耗散能密度/ (J·cm-3) |
| G-15-0-1 | 22.73 | 8.21 | 1.04 | 13.48 | 0.300 |
| G-15-0-2 | 23.13 | 9.37 | 1.30 | 13.46 | 0.299 |
| G-15-0-3 | 22.60 | 7.76 | 0.86 | 13.98 | 0.311 |
| G-15-45-1 | 21.08 | 10.53 | 1.25 | 9.3 | 0.207 |
| G-15-45-2 | 20.89 | 10.27 | 1.05 | 9.57 | 0.213 |
| G-15-45-3 | 20.43 | 9.06 | 1.46 | 9.91 | 0.220 |
| G-15-90-1 | 21.37 | 11.82 | 1.92 | 7.63 | 0.170 |
| G-15-90-2 | 20.63 | 11.78 | 1.33 | 7.52 | 0.167 |
| G-15-90-3 | 22.58 | 12.72 | 2.07 | 7.79 | 0.173 |
| G-15-135-1 | 22.34 | 12.74 | 2.67 | 6.93 | 0.154 |
| G-15-135-2 | 21.41 | 12.93 | 1.76 | 6.72 | 0.149 |
| G-15-135-3 | 20.97 | 11.87 | 1.96 | 7.14 | 0.159 |
), ArticleFig(id=1233422559740481625, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=CN, label=表2, caption=
花岗岩SHPB实验能量特性研究
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试件编号 | 入射能 量/J | 反射能 量/J | 透射能 量/J | 耗散能 量/J | 耗散能密度/ (J·cm-3) |
| G-15-0-1 | 22.73 | 8.21 | 1.04 | 13.48 | 0.300 |
| G-15-0-2 | 23.13 | 9.37 | 1.30 | 13.46 | 0.299 |
| G-15-0-3 | 22.60 | 7.76 | 0.86 | 13.98 | 0.311 |
| G-15-45-1 | 21.08 | 10.53 | 1.25 | 9.3 | 0.207 |
| G-15-45-2 | 20.89 | 10.27 | 1.05 | 9.57 | 0.213 |
| G-15-45-3 | 20.43 | 9.06 | 1.46 | 9.91 | 0.220 |
| G-15-90-1 | 21.37 | 11.82 | 1.92 | 7.63 | 0.170 |
| G-15-90-2 | 20.63 | 11.78 | 1.33 | 7.52 | 0.167 |
| G-15-90-3 | 22.58 | 12.72 | 2.07 | 7.79 | 0.173 |
| G-15-135-1 | 22.34 | 12.74 | 2.67 | 6.93 | 0.154 |
| G-15-135-2 | 21.41 | 12.93 | 1.76 | 6.72 | 0.149 |
| G-15-135-3 | 20.97 | 11.87 | 1.96 | 7.14 | 0.159 |
), ArticleFig(id=1233422559874699365, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=EN, label=Table 3, caption=
Experiment specimen failure process
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| 试件编号 | 试件破坏过程 |
| G-15-0-2 |  |  |  |
| 327 μs | 367 μs | 457 μs |
| G-15-45-3 |  |  |  |
| 217 μs | 287 μs | 240 μs |
| G-15-90-3 |  |  |  |
| 313 μs | 333 μs | 397 μs |
| G-15-135-2 |  |  |  |
| 320 μs | 340 μs | 407 μs |
), ArticleFig(id=1233422560000528495, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=CN, label=表3, caption=
试件破坏过程
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| 试件编号 | 试件破坏过程 |
| G-15-0-2 |  |  |  |
| 327 μs | 367 μs | 457 μs |
| G-15-45-3 |  |  |  |
| 217 μs | 287 μs | 240 μs |
| G-15-90-3 |  |  |  |
| 313 μs | 333 μs | 397 μs |
| G-15-135-2 |  |  |  |
| 320 μs | 340 μs | 407 μs |
), ArticleFig(id=1233422560180883578, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=EN, label=Table 4, caption=
Strain nephogram of specimen failure process
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试件编号 | 裂纹萌生阶段 | 裂纹扩展阶段 | 裂纹贯通阶段 |
| G-15-0-2 |  |  |  |
| 227 μs | 267 μs | 357 μs |
| G-15-45-3 |  |  |  |
| 117 μs | 187 μs | 240 μs |
| G-15-90-3 |  |  |  |
| 213 μs | 233 μs | 297 μs |
| G-15-135-2 |  |  |  |
| 220 μs | 240 μs | 307 μs |
), ArticleFig(id=1233422560352850051, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=CN, label=表4, caption=
试件破坏过程应变云图
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| 试件编号 | 裂纹萌生阶段 | 裂纹扩展阶段 | 裂纹贯通阶段 |
| G-15-0-2 |  |  |  |
| 227 μs | 267 μs | 357 μs |
| G-15-45-3 |  |  |  |
| 117 μs | 187 μs | 240 μs |
| G-15-90-3 |  |  |  |
| 213 μs | 233 μs | 297 μs |
| G-15-135-2 |  |  |  |
| 220 μs | 240 μs | 307 μs |
), ArticleFig(id=1233422560579342486, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=EN, label=Table 5, caption=
The energy characteristics of granite SHPB experiment
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试件编号 | 入射能 量/J | 反射能 量/J | 透射能 量/J | 耗散能 量/J | 耗散能密度/ (J·cm-3) |
| G-20-0-1 | 21.84 | 12.30 | 1.59 | 7.95 | 0.177 |
| G-20-0-2 | 20.97 | 11.43 | 1.92 | 7.62 | 0.169 |
| G-20-0-3 | 22.37 | 12.92 | 1.31 | 8.14 | 0.181 |
), ArticleFig(id=1233422560696783005, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=CN, label=表5, caption=
花岗岩SHPB实验能量特性
, figureFileSmall=null, figureFileBig=null, tableContent=
| 试件编号 | 入射能 量/J | 反射能 量/J | 透射能 量/J | 耗散能 量/J | 耗散能密度/ (J·cm-3) |
| G-20-0-1 | 21.84 | 12.30 | 1.59 | 7.95 | 0.177 |
| G-20-0-2 | 20.97 | 11.43 | 1.92 | 7.62 | 0.169 |
| G-20-0-3 | 22.37 | 12.92 | 1.31 | 8.14 | 0.181 |
), ArticleFig(id=1233422560801640616, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=EN, label=Table 6, caption=
Strain nephogram of specimen G-20-0-2 during failure process
, figureFileSmall=null, figureFileBig=null, tableContent=
| 裂纹萌生阶段 | 裂纹扩展阶段 | 裂纹贯通阶段 |
 |  |  |
| 205 μs | 225 μs | 305 μs |
), ArticleFig(id=1233422560956829874, tenantId=1146029695717560320, journalId=1146123166801305609, articleId=1156264149500945330, language=CN, label=表6, caption=
试件G-20-0-2破坏过程应变云图
, figureFileSmall=null, figureFileBig=null, tableContent=
| 裂纹萌生阶段 | 裂纹扩展阶段 | 裂纹贯通阶段 |
 |  |  |
| 205 μs | 225 μs | 305 μs |
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