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Article: Finite element modeling of geomaterials using digital image processing

TitleFinite element modeling of geomaterials using digital image processing
Authors
KeywordsAsphalt concrete
Automatic mesh generation
Digital image processing
DIP-FEM
Edge detection
Finite element method
Geomechanics
Geometry vectorization
Material inhomogeneity
Microstructure
Issue Date2003
PublisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/compgeo
Citation
Computers And Geotechnics, 2003, v. 30 n. 5, p. 375-397 How to Cite?
AbstractThis paper presents a digital image processing based finite element method for the two-dimensional mechanical analysis of geomaterials by actually taking into account their material inhomogeneities and microstructures. The proposed method incorporates the theories and techniques of digital image processing, the principles of geometry vectorization and the techniques of automatic finite element mesh generation into the conventional finite element methods. Digital image techniques are used to acquire the inhomogeneous distributions of geo-materials including soils, rocks, asphalt concrete and cement concrete in digital format. Digital image processing algorithms are developed to identify and classify the main homogeneous material types and their distribution structures that form the inhomogeneity of a geomaterial in the image. The interfaces of the main homogeneous material types are vectorized to form the internal material geometric structure and sub-regions. The vectorized digital images are used as inputs for finite element mesh generations using automatic mesh generation techniques. Lastly, the conventional finite element methods are employed to carry out the computation and analysis of geomechanical problems by taking into account the actual internal inhomogeneity of the geomaterial. Using asphalt concrete as an example, the paper gives a detailed explanation of the proposed digital image processing based finite element method. The paper further applies the new method to the mechanical analysis of the so-called Brazilian indirect tensile test in rock mechanics and pavement engineering. The numerical results show that this new digital image process based finite element method can take into account the material inhomogeneities in the geomechanical analysis which can have significant effects on the tensile stress distribution along the loading axis of the Brazilian indirect tensile tests. © 2003 Elsevier Science Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/71820
ISSN
2015 Impact Factor: 1.705
2015 SCImago Journal Rankings: 2.033
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorYue, ZQen_HK
dc.contributor.authorChen, Sen_HK
dc.contributor.authorTham, LGen_HK
dc.date.accessioned2010-09-06T06:35:28Z-
dc.date.available2010-09-06T06:35:28Z-
dc.date.issued2003en_HK
dc.identifier.citationComputers And Geotechnics, 2003, v. 30 n. 5, p. 375-397en_HK
dc.identifier.issn0266-352Xen_HK
dc.identifier.urihttp://hdl.handle.net/10722/71820-
dc.description.abstractThis paper presents a digital image processing based finite element method for the two-dimensional mechanical analysis of geomaterials by actually taking into account their material inhomogeneities and microstructures. The proposed method incorporates the theories and techniques of digital image processing, the principles of geometry vectorization and the techniques of automatic finite element mesh generation into the conventional finite element methods. Digital image techniques are used to acquire the inhomogeneous distributions of geo-materials including soils, rocks, asphalt concrete and cement concrete in digital format. Digital image processing algorithms are developed to identify and classify the main homogeneous material types and their distribution structures that form the inhomogeneity of a geomaterial in the image. The interfaces of the main homogeneous material types are vectorized to form the internal material geometric structure and sub-regions. The vectorized digital images are used as inputs for finite element mesh generations using automatic mesh generation techniques. Lastly, the conventional finite element methods are employed to carry out the computation and analysis of geomechanical problems by taking into account the actual internal inhomogeneity of the geomaterial. Using asphalt concrete as an example, the paper gives a detailed explanation of the proposed digital image processing based finite element method. The paper further applies the new method to the mechanical analysis of the so-called Brazilian indirect tensile test in rock mechanics and pavement engineering. The numerical results show that this new digital image process based finite element method can take into account the material inhomogeneities in the geomechanical analysis which can have significant effects on the tensile stress distribution along the loading axis of the Brazilian indirect tensile tests. © 2003 Elsevier Science Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherPergamon. The Journal's web site is located at http://www.elsevier.com/locate/compgeoen_HK
dc.relation.ispartofComputers and Geotechnicsen_HK
dc.subjectAsphalt concreteen_HK
dc.subjectAutomatic mesh generationen_HK
dc.subjectDigital image processingen_HK
dc.subjectDIP-FEMen_HK
dc.subjectEdge detectionen_HK
dc.subjectFinite element methoden_HK
dc.subjectGeomechanicsen_HK
dc.subjectGeometry vectorizationen_HK
dc.subjectMaterial inhomogeneityen_HK
dc.subjectMicrostructureen_HK
dc.titleFinite element modeling of geomaterials using digital image processingen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0266-352X&volume=30&spage=375&epage=397&date=2003&atitle=Finite+element+modeling+of+geomaterials+using+digital+image+processingen_HK
dc.identifier.emailYue, ZQ:yueqzq@hkucc.hku.hken_HK
dc.identifier.emailTham, LG:hrectlg@hkucc.hku.hken_HK
dc.identifier.authorityYue, ZQ=rp00209en_HK
dc.identifier.authorityTham, LG=rp00176en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1016/S0266-352X(03)00015-6en_HK
dc.identifier.scopuseid_2-s2.0-0037411019en_HK
dc.identifier.hkuros76050en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-0037411019&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume30en_HK
dc.identifier.issue5en_HK
dc.identifier.spage375en_HK
dc.identifier.epage397en_HK
dc.identifier.isiWOS:000182104800002-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridYue, ZQ=7102782735en_HK
dc.identifier.scopusauthoridChen, S=7410253051en_HK
dc.identifier.scopusauthoridTham, LG=7006213628en_HK

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