Experimental and Numerical Analysis of Mode I Fracture Process of Rock by Semi-Circular Bend Specimen

The semi-circular bend (SCB) specimen is widely used to measure fracture toughness of brittle materials such as rock. In this work, the stress field, fracture process zone (FPZ), and crack propagation velocity of SCB specimen are analyzed during the fracture process of rock specimens. The FPZ of spe...
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Autor*in:	Peng Xiao [verfasserIn] Diyuan Li [verfasserIn] Guoyan Zhao [verfasserIn] Meng Liu [verfasserIn]

Format:	E-Artikel
Sprache:	Englisch

Erschienen:	2021

Schlagwörter:	numerical simulation rock mechanics mode I fracture toughness fracture process zone digital image correlation

Übergeordnetes Werk:	In: Mathematics - MDPI AG, 2013, 9(2021), 15, p 1769
Übergeordnetes Werk:	volume:9 ; year:2021 ; number:15, p 1769

Links:	Link aufrufen Link aufrufen Link aufrufen Journal toc

DOI / URN:	10.3390/math9151769

Katalog-ID:	DOAJ069903913

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520			\|a The semi-circular bend (SCB) specimen is widely used to measure fracture toughness of brittle materials such as rock. In this work, the stress field, fracture process zone (FPZ), and crack propagation velocity of SCB specimen are analyzed during the fracture process of rock specimens. The FPZ of specimen is obtained by experimental and numerical methods under a three-point bend test. The stress concentration zones of specimen present a heart shape at peak load points. FPZ forms before macro fracture occurs. The macro fracture form inside FPZ in a post-peak region of a load–displacement curve. The crack propagation process of specimen include two stages, namely the rapid crack initial development stage, and the final crack splitting stage. The maximum crack propagation velocity of specimen is about 267 m/s, and the average crack propagation velocity is about 111 m/s.
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spelling	10.3390/math9151769 doi (DE-627)DOAJ069903913 (DE-599)DOAJ1a4e4ac8c4664393a74415142965cd1b DE-627 ger DE-627 rakwb eng QA1-939 Peng Xiao verfasserin aut Experimental and Numerical Analysis of Mode I Fracture Process of Rock by Semi-Circular Bend Specimen 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The semi-circular bend (SCB) specimen is widely used to measure fracture toughness of brittle materials such as rock. In this work, the stress field, fracture process zone (FPZ), and crack propagation velocity of SCB specimen are analyzed during the fracture process of rock specimens. The FPZ of specimen is obtained by experimental and numerical methods under a three-point bend test. The stress concentration zones of specimen present a heart shape at peak load points. FPZ forms before macro fracture occurs. The macro fracture form inside FPZ in a post-peak region of a load–displacement curve. The crack propagation process of specimen include two stages, namely the rapid crack initial development stage, and the final crack splitting stage. The maximum crack propagation velocity of specimen is about 267 m/s, and the average crack propagation velocity is about 111 m/s. numerical simulation rock mechanics mode I fracture toughness fracture process zone digital image correlation Mathematics Diyuan Li verfasserin aut Guoyan Zhao verfasserin aut Meng Liu verfasserin aut In Mathematics MDPI AG, 2013 9(2021), 15, p 1769 (DE-627)737287764 (DE-600)2704244-3 22277390 nnns volume:9 year:2021 number:15, p 1769 https://doi.org/10.3390/math9151769 kostenfrei https://doaj.org/article/1a4e4ac8c4664393a74415142965cd1b kostenfrei https://www.mdpi.com/2227-7390/9/15/1769 kostenfrei https://doaj.org/toc/2227-7390 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 9 2021 15, p 1769
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allfieldsGer	10.3390/math9151769 doi (DE-627)DOAJ069903913 (DE-599)DOAJ1a4e4ac8c4664393a74415142965cd1b DE-627 ger DE-627 rakwb eng QA1-939 Peng Xiao verfasserin aut Experimental and Numerical Analysis of Mode I Fracture Process of Rock by Semi-Circular Bend Specimen 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The semi-circular bend (SCB) specimen is widely used to measure fracture toughness of brittle materials such as rock. In this work, the stress field, fracture process zone (FPZ), and crack propagation velocity of SCB specimen are analyzed during the fracture process of rock specimens. The FPZ of specimen is obtained by experimental and numerical methods under a three-point bend test. The stress concentration zones of specimen present a heart shape at peak load points. FPZ forms before macro fracture occurs. The macro fracture form inside FPZ in a post-peak region of a load–displacement curve. The crack propagation process of specimen include two stages, namely the rapid crack initial development stage, and the final crack splitting stage. The maximum crack propagation velocity of specimen is about 267 m/s, and the average crack propagation velocity is about 111 m/s. numerical simulation rock mechanics mode I fracture toughness fracture process zone digital image correlation Mathematics Diyuan Li verfasserin aut Guoyan Zhao verfasserin aut Meng Liu verfasserin aut In Mathematics MDPI AG, 2013 9(2021), 15, p 1769 (DE-627)737287764 (DE-600)2704244-3 22277390 nnns volume:9 year:2021 number:15, p 1769 https://doi.org/10.3390/math9151769 kostenfrei https://doaj.org/article/1a4e4ac8c4664393a74415142965cd1b kostenfrei https://www.mdpi.com/2227-7390/9/15/1769 kostenfrei https://doaj.org/toc/2227-7390 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 9 2021 15, p 1769
allfieldsSound	10.3390/math9151769 doi (DE-627)DOAJ069903913 (DE-599)DOAJ1a4e4ac8c4664393a74415142965cd1b DE-627 ger DE-627 rakwb eng QA1-939 Peng Xiao verfasserin aut Experimental and Numerical Analysis of Mode I Fracture Process of Rock by Semi-Circular Bend Specimen 2021 Text txt rdacontent Computermedien c rdamedia Online-Ressource cr rdacarrier The semi-circular bend (SCB) specimen is widely used to measure fracture toughness of brittle materials such as rock. In this work, the stress field, fracture process zone (FPZ), and crack propagation velocity of SCB specimen are analyzed during the fracture process of rock specimens. The FPZ of specimen is obtained by experimental and numerical methods under a three-point bend test. The stress concentration zones of specimen present a heart shape at peak load points. FPZ forms before macro fracture occurs. The macro fracture form inside FPZ in a post-peak region of a load–displacement curve. The crack propagation process of specimen include two stages, namely the rapid crack initial development stage, and the final crack splitting stage. The maximum crack propagation velocity of specimen is about 267 m/s, and the average crack propagation velocity is about 111 m/s. numerical simulation rock mechanics mode I fracture toughness fracture process zone digital image correlation Mathematics Diyuan Li verfasserin aut Guoyan Zhao verfasserin aut Meng Liu verfasserin aut In Mathematics MDPI AG, 2013 9(2021), 15, p 1769 (DE-627)737287764 (DE-600)2704244-3 22277390 nnns volume:9 year:2021 number:15, p 1769 https://doi.org/10.3390/math9151769 kostenfrei https://doaj.org/article/1a4e4ac8c4664393a74415142965cd1b kostenfrei https://www.mdpi.com/2227-7390/9/15/1769 kostenfrei https://doaj.org/toc/2227-7390 Journal toc kostenfrei GBV_USEFLAG_A SYSFLAG_A GBV_DOAJ GBV_ILN_20 GBV_ILN_22 GBV_ILN_23 GBV_ILN_24 GBV_ILN_39 GBV_ILN_40 GBV_ILN_60 GBV_ILN_62 GBV_ILN_63 GBV_ILN_65 GBV_ILN_69 GBV_ILN_70 GBV_ILN_73 GBV_ILN_95 GBV_ILN_105 GBV_ILN_110 GBV_ILN_151 GBV_ILN_161 GBV_ILN_170 GBV_ILN_213 GBV_ILN_230 GBV_ILN_285 GBV_ILN_293 GBV_ILN_370 GBV_ILN_602 GBV_ILN_2005 GBV_ILN_2009 GBV_ILN_2014 GBV_ILN_2055 GBV_ILN_2111 GBV_ILN_4012 GBV_ILN_4037 GBV_ILN_4112 GBV_ILN_4125 GBV_ILN_4126 GBV_ILN_4249 GBV_ILN_4305 GBV_ILN_4306 GBV_ILN_4307 GBV_ILN_4313 GBV_ILN_4322 GBV_ILN_4323 GBV_ILN_4324 GBV_ILN_4325 GBV_ILN_4326 GBV_ILN_4335 GBV_ILN_4338 GBV_ILN_4367 GBV_ILN_4700 AR 9 2021 15, p 1769
language	English
source	In Mathematics 9(2021), 15, p 1769 volume:9 year:2021 number:15, p 1769
sourceStr	In Mathematics 9(2021), 15, p 1769 volume:9 year:2021 number:15, p 1769
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topic_facet	numerical simulation rock mechanics mode I fracture toughness fracture process zone digital image correlation Mathematics
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authorswithroles_txt_mv	Peng Xiao @@aut@@ Diyuan Li @@aut@@ Guoyan Zhao @@aut@@ Meng Liu @@aut@@
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callnumber-first	Q - Science
author	Peng Xiao
spellingShingle	Peng Xiao misc QA1-939 misc numerical simulation misc rock mechanics misc mode I fracture toughness misc fracture process zone misc digital image correlation misc Mathematics Experimental and Numerical Analysis of Mode I Fracture Process of Rock by Semi-Circular Bend Specimen
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topic_title	QA1-939 Experimental and Numerical Analysis of Mode I Fracture Process of Rock by Semi-Circular Bend Specimen numerical simulation rock mechanics mode I fracture toughness fracture process zone digital image correlation
topic	misc QA1-939 misc numerical simulation misc rock mechanics misc mode I fracture toughness misc fracture process zone misc digital image correlation misc Mathematics
topic_unstemmed	misc QA1-939 misc numerical simulation misc rock mechanics misc mode I fracture toughness misc fracture process zone misc digital image correlation misc Mathematics
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title	Experimental and Numerical Analysis of Mode I Fracture Process of Rock by Semi-Circular Bend Specimen
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title_sort	experimental and numerical analysis of mode i fracture process of rock by semi-circular bend specimen
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title_auth	Experimental and Numerical Analysis of Mode I Fracture Process of Rock by Semi-Circular Bend Specimen
abstract	The semi-circular bend (SCB) specimen is widely used to measure fracture toughness of brittle materials such as rock. In this work, the stress field, fracture process zone (FPZ), and crack propagation velocity of SCB specimen are analyzed during the fracture process of rock specimens. The FPZ of specimen is obtained by experimental and numerical methods under a three-point bend test. The stress concentration zones of specimen present a heart shape at peak load points. FPZ forms before macro fracture occurs. The macro fracture form inside FPZ in a post-peak region of a load–displacement curve. The crack propagation process of specimen include two stages, namely the rapid crack initial development stage, and the final crack splitting stage. The maximum crack propagation velocity of specimen is about 267 m/s, and the average crack propagation velocity is about 111 m/s.
abstractGer	The semi-circular bend (SCB) specimen is widely used to measure fracture toughness of brittle materials such as rock. In this work, the stress field, fracture process zone (FPZ), and crack propagation velocity of SCB specimen are analyzed during the fracture process of rock specimens. The FPZ of specimen is obtained by experimental and numerical methods under a three-point bend test. The stress concentration zones of specimen present a heart shape at peak load points. FPZ forms before macro fracture occurs. The macro fracture form inside FPZ in a post-peak region of a load–displacement curve. The crack propagation process of specimen include two stages, namely the rapid crack initial development stage, and the final crack splitting stage. The maximum crack propagation velocity of specimen is about 267 m/s, and the average crack propagation velocity is about 111 m/s.
abstract_unstemmed	The semi-circular bend (SCB) specimen is widely used to measure fracture toughness of brittle materials such as rock. In this work, the stress field, fracture process zone (FPZ), and crack propagation velocity of SCB specimen are analyzed during the fracture process of rock specimens. The FPZ of specimen is obtained by experimental and numerical methods under a three-point bend test. The stress concentration zones of specimen present a heart shape at peak load points. FPZ forms before macro fracture occurs. The macro fracture form inside FPZ in a post-peak region of a load–displacement curve. The crack propagation process of specimen include two stages, namely the rapid crack initial development stage, and the final crack splitting stage. The maximum crack propagation velocity of specimen is about 267 m/s, and the average crack propagation velocity is about 111 m/s.
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title_short	Experimental and Numerical Analysis of Mode I Fracture Process of Rock by Semi-Circular Bend Specimen
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Experimental and Numerical Analysis of Mode I Fracture Process of Rock by Semi-Circular Bend Specimen

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