{"@context":{"@vocab":"https://cir.nii.ac.jp/schema/1.0/","rdfs":"http://www.w3.org/2000/01/rdf-schema#","dc":"http://purl.org/dc/elements/1.1/","dcterms":"http://purl.org/dc/terms/","foaf":"http://xmlns.com/foaf/0.1/","prism":"http://prismstandard.org/namespaces/basic/2.0/","cinii":"http://ci.nii.ac.jp/ns/1.0/","datacite":"https://schema.datacite.org/meta/kernel-4/","ndl":"http://ndl.go.jp/dcndl/terms/","jpcoar":"https://github.com/JPCOAR/schema/blob/master/2.0/"},"@id":"https://cir.nii.ac.jp/crid/1361137044774322304.json","@type":"Article","productIdentifier":[{"identifier":{"@type":"DOI","@value":"10.1061/(asce)0893-1321(2009)22:1(15)"}},{"identifier":{"@type":"URI","@value":"https://ascelibrary.org/doi/pdf/10.1061/%28ASCE%290893-1321%282009%2922%3A1%2815%29"}}],"dc:title":[{"@value":"3D Shape Characterization and Image-Based DEM Simulation of the Lunar Soil Simulant FJS-1"}],"description":[{"notation":[{"@value":"This paper describes a procedure used to characterize the three-dimensional 3D grain shape of lunar soil and undertake simulations of lunar soil by image-based discrete element method DEM. Given that detailed 3D grain-shape information is unavailable for real lunar soil, a simulant material, FJS-1, is used in this study. We use the high-resolution micro X-ray CT system at SPring-8, a synchrotron radiation facility in Japan, to visualize precise 3D images of the granular assembly of FJS-1. A newly developed image- analysis procedure is then applied to identify individual grains. Using the obtained grain-shape data, a sufficient number of FJS-1 grains are directly modeled for DEM simulation using an efficient modeling scheme. A series of particle flow simulations are then performed with the modeled grains. The resulting slope angles are in good agreement with experimental results. We discuss the effect on the slope angle of grain parameters such as contact stiffness, restitution coefficient, and interparticle friction."}]}],"creator":[{"@id":"https://cir.nii.ac.jp/crid/1381137044774322305","@type":"Researcher","foaf:name":[{"@value":"Takashi Matsushima"}],"jpcoar:affiliationName":[{"@value":"Associate Professor, Dept. of Engineering Mechanics and Energy, Univ. of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan (corresponding author)."},{"@value":"Graduate Student, Graduate School of Engineering Mechanics and Energy, Univ. of Tsukuba, Tsukuba, Ibaraki, 305–8573, Japan."},{"@value":"Researcher, JASRI/SPring-8, Hyogo, 679–5198, Japan."},{"@value":"Professor, Dept. of Earth and Space Science, Graduate School of Science, Osaka Univ., Osaka, 560–0043, Japan."},{"@value":"Researcher, Institute of Geology and Geoinformation, National Institute of Advance Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305–8567, Japan."}]},{"@id":"https://cir.nii.ac.jp/crid/1381137044774322307","@type":"Researcher","foaf:name":[{"@value":"Jun Katagiri"}],"jpcoar:affiliationName":[{"@value":"Associate Professor, Dept. of Engineering Mechanics and Energy, Univ. of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan (corresponding author)."},{"@value":"Graduate Student, Graduate School of Engineering Mechanics and Energy, Univ. of Tsukuba, Tsukuba, Ibaraki, 305–8573, Japan."},{"@value":"Researcher, JASRI/SPring-8, Hyogo, 679–5198, Japan."},{"@value":"Professor, Dept. of Earth and Space Science, Graduate School of Science, Osaka Univ., Osaka, 560–0043, Japan."},{"@value":"Researcher, Institute of Geology and Geoinformation, National Institute of Advance Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305–8567, Japan."}]},{"@id":"https://cir.nii.ac.jp/crid/1381137044774322304","@type":"Researcher","foaf:name":[{"@value":"Kentaro Uesugi"}],"jpcoar:affiliationName":[{"@value":"Associate Professor, Dept. of Engineering Mechanics and Energy, Univ. of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan (corresponding author)."},{"@value":"Graduate Student, Graduate School of Engineering Mechanics and Energy, Univ. of Tsukuba, Tsukuba, Ibaraki, 305–8573, Japan."},{"@value":"Researcher, JASRI/SPring-8, Hyogo, 679–5198, Japan."},{"@value":"Professor, Dept. of Earth and Space Science, Graduate School of Science, Osaka Univ., Osaka, 560–0043, Japan."},{"@value":"Researcher, Institute of Geology and Geoinformation, National Institute of Advance Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305–8567, Japan."}]},{"@id":"https://cir.nii.ac.jp/crid/1381137044774322306","@type":"Researcher","foaf:name":[{"@value":"Akira Tsuchiyama"}],"jpcoar:affiliationName":[{"@value":"Associate Professor, Dept. of Engineering Mechanics and Energy, Univ. of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan (corresponding author)."},{"@value":"Graduate Student, Graduate School of Engineering Mechanics and Energy, Univ. of Tsukuba, Tsukuba, Ibaraki, 305–8573, Japan."},{"@value":"Researcher, JASRI/SPring-8, Hyogo, 679–5198, Japan."},{"@value":"Professor, Dept. of Earth and Space Science, Graduate School of Science, Osaka Univ., Osaka, 560–0043, Japan."},{"@value":"Researcher, Institute of Geology and Geoinformation, National Institute of Advance Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305–8567, Japan."}]},{"@id":"https://cir.nii.ac.jp/crid/1381137044774322308","@type":"Researcher","foaf:name":[{"@value":"Tsukaka Nakano"}],"jpcoar:affiliationName":[{"@value":"Associate Professor, Dept. of Engineering Mechanics and Energy, Univ. of Tsukuba, Tsukuba, Ibaraki, 305-8573, Japan (corresponding author)."},{"@value":"Graduate Student, Graduate School of Engineering Mechanics and Energy, Univ. of Tsukuba, Tsukuba, Ibaraki, 305–8573, Japan."},{"@value":"Researcher, JASRI/SPring-8, Hyogo, 679–5198, Japan."},{"@value":"Professor, Dept. of Earth and Space Science, Graduate School of Science, Osaka Univ., Osaka, 560–0043, Japan."},{"@value":"Researcher, Institute of Geology and Geoinformation, National Institute of Advance Industrial Science and Technology (AIST), Tsukuba, Ibaraki, 305–8567, Japan."}]}],"publication":{"publicationIdentifier":[{"@type":"PISSN","@value":"08931321"},{"@type":"EISSN","@value":"19435525"}],"prism:publicationName":[{"@value":"Journal of Aerospace Engineering"}],"dc:publisher":[{"@value":"American Society of Civil Engineers (ASCE)"}],"prism:publicationDate":"2009-01","prism:volume":"22","prism:number":"1","prism:startingPage":"15","prism:endingPage":"23"},"reviewed":"false","url":[{"@id":"https://ascelibrary.org/doi/pdf/10.1061/%28ASCE%290893-1321%282009%2922%3A1%2815%29"}],"createdAt":"2008-12-16","modifiedAt":"2022-06-09","relatedProduct":[{"@id":"https://cir.nii.ac.jp/crid/1050564285731389312","@type":"Article","resourceType":"学術雑誌論文(journal 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DISCRETE-ELEMENT METHOD"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205351159040","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"FAILURE CRITERIA FOR GEOMATERIALS IN SIMPLE DISCRETE ELEMENT MODELING"},{"@value":"地盤材料の破壊基準を表現するためのシンプルな個別要素モデル"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205352925440","@type":"Article","resourceType":"学術雑誌論文(journal article)","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"石礫粒子群の運動および河床構造に及ぼす粒子衝突の効果"},{"@language":"en","@value":"EFFECT OF COLISIONS ON GRAVEL MOVEMENT AND BED STRUCTURE"},{"@language":"ja-Kana","@value":"イシツブテ リュウシグン ノ ウンドウ オヨビ カショウ コウゾウ ニ オヨボス リュウシ ショウトツ ノ コウカ"}]},{"@id":"https://cir.nii.ac.jp/crid/1390001205355159808","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"QUANTITATIVE CHARACTERIZATION OF THREE-DIMENSIONAL GRAIN SHAPES BY X-RAY MICRO CT AT 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Stress"},{"@value":"不規則形状粒子を用いた個別要素法による砂の高拘束圧下力学試験のシミュレーション : メタンハイドレート開発時における坑井の安定性に関する基礎的研究(第3報)"},{"@language":"ja-Kana","@value":"フキソク ケイジョウ リュウシ オ モチイタ コベツ ヨウソホウ ニ ヨル スナ ノ コウコウソク アッカ リキガク シケン ノ シミュレーション : メタンハイドレート カイハツジ ニ オケル コウセイ ノ アンテイセイ ニ カンスル キソテキ ケンキュウ(ダイ3ポウ)"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282680327816832","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"DEMを用いた磁性粉体力学挙動の微視的検討"},{"@language":"en","@value":"Collective Behavior of Magnetic Particles in a Magnetic Field Studied by DEM"}]},{"@id":"https://cir.nii.ac.jp/crid/1390282680327818240","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"ja","@value":"粒状体層中の小粒子透過挙動"},{"@language":"en","@value":"FINE POWDER PERCOLATION THROUGH GRANULER LAYER"}]},{"@id":"https://cir.nii.ac.jp/crid/1390568937776679552","@type":"Article","relationType":["isReferencedBy"],"jpcoar:relatedTitle":[{"@language":"en","@value":"Genetic Algorithm 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