Modeling the mechanical behavior of coarse-grained soil using additive manufactured particle analogs.
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| Title: | Modeling the mechanical behavior of coarse-grained soil using additive manufactured particle analogs. |
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| Authors: | Ahmed, Sheikh Sharif1 (AUTHOR), Martinez, Alejandro1 (AUTHOR) amart@ucdavis.edu |
| Source: | Acta Geotechnica. Oct2020, Vol. 15 Issue 10, p2829-2847. 19p. |
| Subjects: | Mechanical models, Human behavior models, Friction velocity, Modulus of rigidity, Shear waves |
| Abstract: | Systematic investigation of the effects of individual particle properties, such as shape, size, surface roughness, and constituent materials stiffness, on the behavior of coarse-grained soils requires careful control over the other particle properties. Achieving this control is a pervasive challenge in investigations with naturally occurring soils. The rapid advance of modern additive manufacturing (AM) technology provides the ability to create analog particles with independent control over particle size and shape. This work evaluates the feasibility of the stereolithography (SLA) and polyjet technologies to generate analog particles that can model the mechanical behavior of coarse-grained soils. AM is used to generate equal-sized spheres and analog sand particles from 3D X-ray CT scans of natural rounded and angular sand particles. The uniaxial inter-particle compression, oedometer compression, and shear wave transmission behaviors of the AM particles are investigated and compared to those of glass and steel spheres and natural rounded and angular sand particles. The results indicate that AM can successfully reproduce the shape of natural coarse sand particles. The deformation of micro-asperities was found to influence the contact response of the polyjet AM particles, thus affecting their inter-particle uniaxial compression and oedometer compression response. The contact response of the SLA AM particles was closer to that of glass spheres. Both AM particle types exhibit a dependency of shear wave velocity and shear modulus on mean effective stress that is consistent with that of natural sands. [ABSTRACT FROM AUTHOR] |
| Copyright of Acta Geotechnica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
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| Header | DbId: egs DbLabel: Engineering Source An: 145433223 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
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| Items | – Name: Title Label: Title Group: Ti Data: Modeling the mechanical behavior of coarse-grained soil using additive manufactured particle analogs. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Ahmed%2C+Sheikh+Sharif%22">Ahmed, Sheikh Sharif</searchLink><relatesTo>1</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Martinez%2C+Alejandro%22">Martinez, Alejandro</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> amart@ucdavis.edu</i> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Acta+Geotechnica%22">Acta Geotechnica</searchLink>. Oct2020, Vol. 15 Issue 10, p2829-2847. 19p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Mechanical+models%22">Mechanical models</searchLink><br /><searchLink fieldCode="DE" term="%22Human+behavior+models%22">Human behavior models</searchLink><br /><searchLink fieldCode="DE" term="%22Friction+velocity%22">Friction velocity</searchLink><br /><searchLink fieldCode="DE" term="%22Modulus+of+rigidity%22">Modulus of rigidity</searchLink><br /><searchLink fieldCode="DE" term="%22Shear+waves%22">Shear waves</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Systematic investigation of the effects of individual particle properties, such as shape, size, surface roughness, and constituent materials stiffness, on the behavior of coarse-grained soils requires careful control over the other particle properties. Achieving this control is a pervasive challenge in investigations with naturally occurring soils. The rapid advance of modern additive manufacturing (AM) technology provides the ability to create analog particles with independent control over particle size and shape. This work evaluates the feasibility of the stereolithography (SLA) and polyjet technologies to generate analog particles that can model the mechanical behavior of coarse-grained soils. AM is used to generate equal-sized spheres and analog sand particles from 3D X-ray CT scans of natural rounded and angular sand particles. The uniaxial inter-particle compression, oedometer compression, and shear wave transmission behaviors of the AM particles are investigated and compared to those of glass and steel spheres and natural rounded and angular sand particles. The results indicate that AM can successfully reproduce the shape of natural coarse sand particles. The deformation of micro-asperities was found to influence the contact response of the polyjet AM particles, thus affecting their inter-particle uniaxial compression and oedometer compression response. The contact response of the SLA AM particles was closer to that of glass spheres. Both AM particle types exhibit a dependency of shear wave velocity and shear modulus on mean effective stress that is consistent with that of natural sands. [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Acta Geotechnica is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=145433223 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1007/s11440-020-01007-6 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 19 StartPage: 2829 Subjects: – SubjectFull: Mechanical models Type: general – SubjectFull: Human behavior models Type: general – SubjectFull: Friction velocity Type: general – SubjectFull: Modulus of rigidity Type: general – SubjectFull: Shear waves Type: general Titles: – TitleFull: Modeling the mechanical behavior of coarse-grained soil using additive manufactured particle analogs. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Ahmed, Sheikh Sharif – PersonEntity: Name: NameFull: Martinez, Alejandro IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 10 Text: Oct2020 Type: published Y: 2020 Identifiers: – Type: issn-print Value: 18611125 Numbering: – Type: volume Value: 15 – Type: issue Value: 10 Titles: – TitleFull: Acta Geotechnica Type: main |
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