The Continuum Voronoi Block Model for simulation of fracture process in hard rocks
In this paper, a numerical model is presented to represent the fracture process in hard rocks based on a pseudo‐discontinuum method called the Continuum Voronoi Block Model (CVBM). To validate this tool, numerical models for one Brazilian test, one unconfined compression test, and multiple triaxial...
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| Veröffentlicht in: | International journal for numerical and analytical methods in geomechanics 2022-01, Vol.46 (1), p.89-112 |
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| container_title | International journal for numerical and analytical methods in geomechanics |
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| creator | Rógenes, Erick de Farias, Márcio Muniz Rasmussen, Leandro Lima |
| description | In this paper, a numerical model is presented to represent the fracture process in hard rocks based on a pseudo‐discontinuum method called the Continuum Voronoi Block Model (CVBM). To validate this tool, numerical models for one Brazilian test, one unconfined compression test, and multiple triaxial compression tests with different confining stress were calibrated to match laboratory test results for Creighton granite. The model proved robust and matched the following macro‐properties: crack initiation (CI) stress, (CD) stress, peak strength, tensile strength, Young's Modulus, and Poisson's ratio. The calibrated model served as a basis for a sensitivity study to analyze how micro‐properties influence the rock's macroscopic responses. From the sensitivity study, a calibration methodology was proposed, which shall facilitate the use of the CVBM in future works. |
| doi_str_mv | 10.1002/nag.3292 |
| format | Article |
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To validate this tool, numerical models for one Brazilian test, one unconfined compression test, and multiple triaxial compression tests with different confining stress were calibrated to match laboratory test results for Creighton granite. The model proved robust and matched the following macro‐properties: crack initiation (CI) stress, (CD) stress, peak strength, tensile strength, Young's Modulus, and Poisson's ratio. The calibrated model served as a basis for a sensitivity study to analyze how micro‐properties influence the rock's macroscopic responses. From the sensitivity study, a calibration methodology was proposed, which shall facilitate the use of the CVBM in future works.</description><identifier>ISSN: 0363-9061</identifier><identifier>EISSN: 1096-9853</identifier><identifier>DOI: 10.1002/nag.3292</identifier><language>eng</language><publisher>Bognor Regis: Wiley Subscription Services, Inc</publisher><subject>brittle failure ; Calibration ; Compression ; crack damage ; Crack initiation ; FEM model ; Laboratory tests ; Mathematical models ; Mechanical properties ; Modulus of elasticity ; Numerical models ; Poisson's ratio ; Properties ; Robustness (mathematics) ; Rock ; Rocks ; Sensitivity analysis ; Stress ; Tensile strength ; Triaxial compression tests</subject><ispartof>International journal for numerical and analytical methods in geomechanics, 2022-01, Vol.46 (1), p.89-112</ispartof><rights>2021 John Wiley & Sons Ltd.</rights><rights>2022 John Wiley & Sons Ltd.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a3162-50823e26bfbeb76c3f511d3877f9241b5e1773c6c50dd6b2486e2debe3398e673</citedby><cites>FETCH-LOGICAL-a3162-50823e26bfbeb76c3f511d3877f9241b5e1773c6c50dd6b2486e2debe3398e673</cites><orcidid>0000-0001-7272-2721</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1002%2Fnag.3292$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1002%2Fnag.3292$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,27924,27925,45574,45575</link.rule.ids></links><search><creatorcontrib>Rógenes, Erick</creatorcontrib><creatorcontrib>de Farias, Márcio Muniz</creatorcontrib><creatorcontrib>Rasmussen, Leandro Lima</creatorcontrib><title>The Continuum Voronoi Block Model for simulation of fracture process in hard rocks</title><title>International journal for numerical and analytical methods in geomechanics</title><description>In this paper, a numerical model is presented to represent the fracture process in hard rocks based on a pseudo‐discontinuum method called the Continuum Voronoi Block Model (CVBM). To validate this tool, numerical models for one Brazilian test, one unconfined compression test, and multiple triaxial compression tests with different confining stress were calibrated to match laboratory test results for Creighton granite. The model proved robust and matched the following macro‐properties: crack initiation (CI) stress, (CD) stress, peak strength, tensile strength, Young's Modulus, and Poisson's ratio. The calibrated model served as a basis for a sensitivity study to analyze how micro‐properties influence the rock's macroscopic responses. From the sensitivity study, a calibration methodology was proposed, which shall facilitate the use of the CVBM in future works.</description><subject>brittle failure</subject><subject>Calibration</subject><subject>Compression</subject><subject>crack damage</subject><subject>Crack initiation</subject><subject>FEM model</subject><subject>Laboratory tests</subject><subject>Mathematical models</subject><subject>Mechanical properties</subject><subject>Modulus of elasticity</subject><subject>Numerical models</subject><subject>Poisson's ratio</subject><subject>Properties</subject><subject>Robustness (mathematics)</subject><subject>Rock</subject><subject>Rocks</subject><subject>Sensitivity analysis</subject><subject>Stress</subject><subject>Tensile strength</subject><subject>Triaxial compression tests</subject><issn>0363-9061</issn><issn>1096-9853</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2022</creationdate><recordtype>article</recordtype><recordid>eNp10E1LAzEQBuAgCtYq-BMCXrxszUc3uznWYqtQFaR6DdnsxG67TWqyi_Tfm1qvnoZhHmaGF6FrSkaUEHbn9OeIM8lO0IASKTJZ5vwUDQgXPJNE0HN0EeOaEJKn6QC9LVeAp951jev7Lf7wwTvf4PvWmw1-9jW02PqAY7PtW9013mFvsQ3adH0AvAveQIy4cXilQ41Tu4mX6MzqNsLVXx2i99nDcvqYLV7nT9PJItOcCpblpGQcmKhsBVUhDLc5pTUvi8JKNqZVDrQouBEmJ3UtKjYuBbAaKuBcliAKPkQ3x73pi68eYqfWvg8unVRMEElZXlCZ1O1RmeBjDGDVLjRbHfaKEnVITKXE1CGxRLMj_W5a2P_r1Mtk_ut_AE7wa8A</recordid><startdate>202201</startdate><enddate>202201</enddate><creator>Rógenes, Erick</creator><creator>de Farias, Márcio Muniz</creator><creator>Rasmussen, Leandro Lima</creator><general>Wiley Subscription Services, Inc</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SC</scope><scope>7UA</scope><scope>8FD</scope><scope>C1K</scope><scope>F1W</scope><scope>FR3</scope><scope>H96</scope><scope>JQ2</scope><scope>KR7</scope><scope>L.G</scope><scope>L7M</scope><scope>L~C</scope><scope>L~D</scope><orcidid>https://orcid.org/0000-0001-7272-2721</orcidid></search><sort><creationdate>202201</creationdate><title>The Continuum Voronoi Block Model for simulation of fracture process in hard rocks</title><author>Rógenes, Erick ; 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To validate this tool, numerical models for one Brazilian test, one unconfined compression test, and multiple triaxial compression tests with different confining stress were calibrated to match laboratory test results for Creighton granite. The model proved robust and matched the following macro‐properties: crack initiation (CI) stress, (CD) stress, peak strength, tensile strength, Young's Modulus, and Poisson's ratio. The calibrated model served as a basis for a sensitivity study to analyze how micro‐properties influence the rock's macroscopic responses. From the sensitivity study, a calibration methodology was proposed, which shall facilitate the use of the CVBM in future works.</abstract><cop>Bognor Regis</cop><pub>Wiley Subscription Services, Inc</pub><doi>10.1002/nag.3292</doi><tpages>24</tpages><orcidid>https://orcid.org/0000-0001-7272-2721</orcidid></addata></record> |
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| subjects | brittle failure Calibration Compression crack damage Crack initiation FEM model Laboratory tests Mathematical models Mechanical properties Modulus of elasticity Numerical models Poisson's ratio Properties Robustness (mathematics) Rock Rocks Sensitivity analysis Stress Tensile strength Triaxial compression tests |
| title | The Continuum Voronoi Block Model for simulation of fracture process in hard rocks |
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