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Article: A simple and effective geometric representation for irregular porous structure modeling

TitleA simple and effective geometric representation for irregular porous structure modeling
Authors
KeywordsCAD
Nature inspired design
Porosity
Porous structure
Random aggregate
Spline
Voronoi diagram
Issue Date2010
PublisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/cad
Citation
Cad Computer Aided Design, 2010, v. 42 n. 10, p. 930-941 How to Cite?
AbstractComputer-aided design of porous structures is a challenging task because of the high degree of irregularity and intricacy associated with the geometries. Most of the existing design approaches either target designing artifacts with regular-shaped pores or reconstructing geometric models from existing porous objects. For regular porous structures, it is difficult to control the pore shapes and distributions locally; for reconstructed models, a design is attainable only if there are some existing objects to reconstruct from. This paper is motivated to present an alternative approach to design irregular porous artifacts with controllable pore shapes and distributions, yet without requiring any existing objects as prerequisites. Inspired by the random colloid-aggregation model which explains the formation mechanism of random porous media, Voronoi tessellation is first generated to partition the space into a collection of compartments. Selective compartments are then merged together to imitate the random colloid aggregations. Through this Voronoi cell merging, irregular convex and concave polygons are obtained and the vertices of which are modeled as control points of closed B-Spline curves. The fitted B-Spline curves are then employed to represent the boundaries of the irregular-shaped pores. The proposed approach drastically improved the ease of irregular porous structure modeling while at the same time properly maintained the irregularity that is widely found in natural objects. Compared with other existing CAD approaches, the proposed approach can easily construct irregular porous structures which appear more natural and realistic. © 2010 Elsevier Ltd. All rights reserved.
Persistent Identifierhttp://hdl.handle.net/10722/124825
ISSN
2015 Impact Factor: 2.149
2015 SCImago Journal Rankings: 1.078
ISI Accession Number ID
Funding AgencyGrant Number
Department of Mechanical Engineering, the University of Hong Kong
Research Grants Council of Hong Kong SAR GovernmentHKU7170/06E
Funding Information:

The authors would like to thank the Department of Mechanical Engineering, the University of Hong Kong and the Research Grants Council of Hong Kong SAR Government for supporting this project (HKU7170/06E).

References

 

DC FieldValueLanguage
dc.contributor.authorKou, XYen_HK
dc.contributor.authorTan, STen_HK
dc.date.accessioned2010-10-31T10:56:19Z-
dc.date.available2010-10-31T10:56:19Z-
dc.date.issued2010en_HK
dc.identifier.citationCad Computer Aided Design, 2010, v. 42 n. 10, p. 930-941en_HK
dc.identifier.issn0010-4485en_HK
dc.identifier.urihttp://hdl.handle.net/10722/124825-
dc.description.abstractComputer-aided design of porous structures is a challenging task because of the high degree of irregularity and intricacy associated with the geometries. Most of the existing design approaches either target designing artifacts with regular-shaped pores or reconstructing geometric models from existing porous objects. For regular porous structures, it is difficult to control the pore shapes and distributions locally; for reconstructed models, a design is attainable only if there are some existing objects to reconstruct from. This paper is motivated to present an alternative approach to design irregular porous artifacts with controllable pore shapes and distributions, yet without requiring any existing objects as prerequisites. Inspired by the random colloid-aggregation model which explains the formation mechanism of random porous media, Voronoi tessellation is first generated to partition the space into a collection of compartments. Selective compartments are then merged together to imitate the random colloid aggregations. Through this Voronoi cell merging, irregular convex and concave polygons are obtained and the vertices of which are modeled as control points of closed B-Spline curves. The fitted B-Spline curves are then employed to represent the boundaries of the irregular-shaped pores. The proposed approach drastically improved the ease of irregular porous structure modeling while at the same time properly maintained the irregularity that is widely found in natural objects. Compared with other existing CAD approaches, the proposed approach can easily construct irregular porous structures which appear more natural and realistic. © 2010 Elsevier Ltd. All rights reserved.en_HK
dc.languageengen_HK
dc.publisherElsevier Ltd. The Journal's web site is located at http://www.elsevier.com/locate/caden_HK
dc.relation.ispartofCAD Computer Aided Designen_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License-
dc.rightsNOTICE: this is the author’s version of a work that was accepted for publication in Computer-Aided Design. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Computer-Aided Design, 2010, v. 42 n. 10, p. 930-941. DOI: 10.1016/j.cad.2010.06.006-
dc.subjectCADen_HK
dc.subjectNature inspired designen_HK
dc.subjectPorosityen_HK
dc.subjectPorous structureen_HK
dc.subjectRandom aggregateen_HK
dc.subjectSplineen_HK
dc.subjectVoronoi diagramen_HK
dc.titleA simple and effective geometric representation for irregular porous structure modelingen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=0010-4485&volume=42&issue=10&spage=930&epage=941&date=2010&atitle=A+simple+and+effective+geometric+representation+for+irregular+porous+structure+modelingen_HK
dc.identifier.emailTan, ST:sttan@hkucc.hku.hken_HK
dc.identifier.authorityTan, ST=rp00174en_HK
dc.description.naturepostprint-
dc.identifier.doi10.1016/j.cad.2010.06.006en_HK
dc.identifier.scopuseid_2-s2.0-77955564217en_HK
dc.identifier.hkuros179944en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-77955564217&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.volume42en_HK
dc.identifier.issue10en_HK
dc.identifier.spage930en_HK
dc.identifier.epage941en_HK
dc.identifier.eissn1879-2685-
dc.identifier.isiWOS:000281619600007-
dc.publisher.placeUnited Kingdomen_HK
dc.identifier.scopusauthoridKou, XY=7005662507en_HK
dc.identifier.scopusauthoridTan, ST=7403366758en_HK

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