Fundamental physics and impact response of hierarchical granular matter

• Project/Area Number: 18H03679
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Review Section: Medium-sized Section 13:Condensed matter physics and related fields
• Research Institution: Osaka University (2019-2022); Nagoya University (2018)
• Principal Investigator: 桂木 洋光 大阪大学, 大学院理学研究科, 教授 (30346853)
• Project Period (FY): 2018-04-01 – 2023-03-31
• Project Status: Completed (Fiscal Year 2022)
• Budget Amount: ¥43,940,000 (Direct Cost: ¥33,800,000、Indirect Cost: ¥10,140,000); Fiscal Year 2022: ¥5,980,000 (Direct Cost: ¥4,600,000、Indirect Cost: ¥1,380,000); Fiscal Year 2021: ¥11,180,000 (Direct Cost: ¥8,600,000、Indirect Cost: ¥2,580,000); Fiscal Year 2020: ¥7,670,000 (Direct Cost: ¥5,900,000、Indirect Cost: ¥1,770,000); Fiscal Year 2019: ¥6,630,000 (Direct Cost: ¥5,100,000、Indirect Cost: ¥1,530,000); Fiscal Year 2018: ¥12,480,000 (Direct Cost: ¥9,600,000、Indirect Cost: ¥2,880,000)
• Keywords: 粉体 / 階層構造 / 衝突 / 力学特性

Outline of Annual Research Achievements

研究計画の最終年度にあたるため，成果の発表および全体の総合議論に主に取り組んだ．ただし，前半は「付着性効果の高い微小粒子層の振動応答に関する研究」，「土壌団粒構造を模擬した階層粉体中における保水効果についての研究」などの実験研究にも精力的に取り組んだ．付着性微小粒子層の振動応答については，「水平亀裂の生成と進行」，「振動層上部での凝集粒子の生成」のそれぞれの過程について系統的実験を行い，その詳細を2編の論文で報告した．特に，粉体工学的プロセスの中で流動輸送が難しい微粉の振動のみによる（気流を用いない）効率的流動化を目指して，振動層の容器形状を様々に変化させる実験を行った．その結果，半球状底面を持つ容器を用いた場合に流動化が顕著に促進されることが明らかになった．一方，振動条件によっては容器内に巨大な一つの凝集粒子が生成される場合があることも確認された．微粉振動層内で粉体が階層構造を持つためには適度に粒子の崩壊も起こる必要があり，振動により階層粉体を作成することが必ずしも容易でないことも明らかになった．また，土壌団粒の保水効果については，土壌団粒の各団粒粒子内部のミクロポアが飽和してから団粒粒子間のマクロポアに水が分布し始めることをいくつかの計測から明らかにした．その結果，土壌団粒構造を用いることで，良好な排水性能と高い保水性能を両立するために実現すべき団粒の階層構造の理解を進めることに成功した．以上の成果に加え，昨年度までに精力的に取り組んだ「階層構造を持つ高空隙率粒子群への固体弾衝突による衝突抵抗力の研究」について，粒子破壊によるエネルギー散逸を考慮することによって抵抗力のモデル化に成功し，その成果を論文により発表した．これにより，小惑星等の階層構造を持つことが予想される天体表面への固体オブジェクトの衝突による抵抗力則を適切に推定することが可能になったと言える．

Research Progress Status

令和4年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

令和4年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] BUAP(メキシコ)
• [Int'l Joint Research] Benemerita Univ. Autonoma de Puebla(メキシコ)
• [Int'l Joint Research] Indian Institute of Technology Guwahati(インド)
• [Int'l Joint Research] Technische Universitat zu Braunschweig(ドイツ)
• [Journal Article] Energy dissipation of a sphere rolling up a granular slope: Slip and deformation of the granular surface (2024)
  • Author(s): Fukumoto T.、Yamamoto K.、Katsura M.、Katsuragi H.
  • Journal Title: Physical Review E Volume: 109 Issue: 1
  • DOI: 10.1103/physreve.109.014903
  • Peer Reviewed
• [Journal Article] Grain-size dependence of water retention in a model aggregated soil (2023)
  • Author(s): Yasuda Hyuga、Katsura Makoto、Katsuragi Hiroaki
  • Journal Title: Advanced Powder Technology Volume: 34 Issue: 1 Pages: 103896-103896
  • DOI: 10.1016/j.apt.2022.103896
  • Peer Reviewed
• [Journal Article] Fracturing-induced fluidization of vibrated fine-powder column (2023)
  • Author(s): Sonar Prasad、Katsuragi Hiroaki
  • Journal Title: Powder Technology Volume: 421 Pages: 118405-118405
  • DOI: 10.1016/j.powtec.2023.118405
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] History-dependent deformation of a rotated granular pile governed by granular friction (2022)
  • Author(s): Irie Terunori、Yamaguchi Ryusei、Watanabe Sei-ichiro、Katsuragi Hiroaki
  • Journal Title: Advanced Powder Technology Volume: 33 Issue: 8 Pages: 103629-103629
  • DOI: 10.1016/j.apt.2022.103629
  • Peer Reviewed
• [Journal Article] Decompaction wave propagation in a vibrated fine-powder bed (2022)
  • Author(s): Sonar Prasad、Katsuragi Hiroaki
  • Journal Title: Physical Review E Volume: 106 Issue: 1
  • DOI: 10.1103/physreve.106.014905
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Impact drag force exerted on a projectile penetrating into a hierarchical granular bed (2022)
  • Author(s): Okubo Fumiaki、Katsuragi Hiroaki
  • Journal Title: Astronomy & Astrophysics Volume: 664 Pages: A147-A147
  • DOI: 10.1051/0004-6361/202243787
  • Peer Reviewed
• [Journal Article] History-dependent growth and reduction of the ripples formed on a swept granular track (2022)
  • Author(s): Hata Shunto、Katsura Makoto、Katsuragi Hiroaki
  • Journal Title: The European Physical Journal E Volume: 45 Issue: 1 Pages: 8-8
  • DOI: 10.1140/epje/s10189-022-00165-7
  • Peer Reviewed
• [Journal Article] Force chain structure in a rod-withdrawn granular layer (2021)
  • Author(s): Okubo F.、Katsuragi H.
  • Journal Title: Modern Physics Letters B Volume: 35 Issue: 16 Pages: 2150206-2150206
  • DOI: 10.1142/s0217984921502067
  • Peer Reviewed
• [Journal Article] Measurement of surface deformation and cohesion of a granular pile under the effect of centrifugal force (2021)
  • Author(s): Irie Terunori、Yamaguchi Ryusei、Watanabe Sei-ichiro、Katsuragi Hiroaki
  • Journal Title: Measurement Science and Technology Volume: 32 Issue: 12 Pages: 125301-125301
  • DOI: 10.1088/1361-6501/ac1b25
  • Peer Reviewed
• [Journal Article] Deformation of a rotated granular pile governed by body-force-dependent friction (2021)
  • Author(s): Irie Terunori、Yamaguchi Ryusei、Watanabe Sei-ichiro、Katsuragi Hiroaki
  • Journal Title: Physical Review E Volume: 104 Issue: 6 Pages: 064902-064902
  • DOI: 10.1103/physreve.104.064902
  • Peer Reviewed
• [Journal Article] Undulating compression and multistage relaxation in a granular column consisting of dust particles or glass beads (2021)
  • Author(s): Pacheco-V?zquez Felipe、Omura Tomomi、Katsuragi Hiroaki
  • Journal Title: Physical Review Research Volume: 3 Issue: 1 Pages: 013190-013190
  • DOI: 10.1103/physrevresearch.3.013190
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Viscoelasticity to Run on a Dense Potato-Starch Suspension (2020)
  • Author(s): KATSURAGI Hiroaki
  • Journal Title: JAPANESE JOURNAL OF MULTIPHASE FLOW Volume: 34 Issue: 3 Pages: 395-402
  • DOI: 10.3811/jjmf.2020.T011
  • NAID: 130007924668
  • ISSN: 0914-2843, 1881-5790
  • Year and Date: 2020-09-15
• [Journal Article] Centroid migration on an impacted granular slope due to asymmetric ejecta deposition and landsliding (2020)
  • Author(s): Omura Tomomi、Takizawa Shinta、Katsuragi Hiroaki
  • Journal Title: Monthly Notices of the Royal Astronomical Society Volume: 502 Issue: 1 Pages: 293-299
  • DOI: 10.1093/mnras/staa3982
  • Peer Reviewed
• [Journal Article] A novel experimental setup for an oblique impact onto an inclined granular layer (2020)
  • Author(s): S. Takizawa, R. Yamaguchi, and H. Katsuragi
  • Journal Title: Rev. Sci. Instrum. Volume: 91 Issue: 1
  • DOI: 10.1063/1.5127087
  • Peer Reviewed
• [Journal Article] Scaling laws for the oblique impact cratering on an inclined granular surface (2020)
  • Author(s): S. Takizawa and H. Katsuragi
  • Journal Title: Icarus Volume: 335 Pages: 113409-113409
  • DOI: 10.1016/j.icarus.2019.113409
  • Peer Reviewed
• [Journal Article] Experimental Study of Stability and Strength of a Horizontal Tunnel in Wet Granular Layer: Empirical Forms of Strength to Discuss the Mechanical Stability of Crab Burrows (2019)
  • Author(s): 篠田 明友子, 藤原 慎一, 新屋 啓文, 桂木 洋光
  • Journal Title: Journal of the Society of Powder Technology, Japan Volume: 56 Issue: 4 Pages: 194-202
  • DOI: 10.4164/sptj.56.194
  • NAID: 130007633974
  • ISSN: 0386-6157, 1883-7239
  • Year and Date: 2019-04-10
  • Peer Reviewed
• [Journal Article] Laboratory experiment and discrete-element-method simulation of granular-heap flows under vertical vibration (2019)
  • Author(s): Tsuji Daisuke、Otsuki Michio、Katsuragi Hiroaki
  • Journal Title: Physical Review E Volume: 99 Issue: 6 Pages: 062902-062902
  • DOI: 10.1103/physreve.99.062902
  • Peer Reviewed
• [Journal Article] Bouncing of a projectile impacting a dense potato-starch suspension layer (2019)
  • Author(s): K. Egawa and H. Katsuragi
  • Journal Title: Phys. Fluids Volume: 31 Issue: 5
  • DOI: 10.1063/1.5095678
  • Peer Reviewed
• [Journal Article] Physical constraints on sand crab burrows: mechanical properties of wet sand explain the size and spatial distributions of burrows on beaches (2019)
  • Author(s): A. Shinoda, S. Fujiwara, H. Niiya, and H. Katsuragi
  • Journal Title: PLOS ONE Volume: 14 Issue: 5 Pages: e0215743-e0215743
  • DOI: 10.1371/journal.pone.0215743
  • Peer Reviewed / Open Access
• [Journal Article] Packing-dependent granular friction exerted on a rod withdrawn from a granular layer: the role of shear jamming (2019)
  • Author(s): T. Furuta, S. Kumar, K. Anki Reddy, H. Niiya and H. Katsuragi
  • Journal Title: New J. Phys. Volume: 21 Issue: 2 Pages: 023001-023001
  • DOI: 10.1088/1367-2630/ab00c8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Impact-induced collapse of an inclined wet granular layer (2019)
  • Author(s): S. Takizawa, H. Niiya, T. Tanabe, H. Nishimori, and H. Katsuragi,
  • Journal Title: Physica D Volume: 386-387 Pages: 8-13
  • DOI: 10.1016/j.physd.2018.08.002
  • Peer Reviewed
• [Journal Article] Impact-induced energy transfer and dissipation in granular clusters under microgravity conditions (2018)
  • Author(s): H. Katsuragi and J. Blum
  • Journal Title: Phys. Rev. Lett. Volume: 121 Issue: 20
  • DOI: 10.1103/physrevlett.121.208001
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Void structure stability in wet granular matter and its application to crab burrows and cometary pits (2018)
  • Author(s): A. Shinoda, S. Fujiwara, H. Niiya, and H. Katsuragi
  • Journal Title: Sci. Rep. Volume: 8 Issue: 1
  • DOI: 10.1038/s41598-018-33978-8
  • Peer Reviewed / Open Access
• [Journal Article] Shape dependence of resistance force exerted on an obstacle placed in a gravity-driven granular silo flow (2018)
  • Author(s): H. Katsuragi, K. Anki Reddy, and K. Endo
  • Journal Title: AIChE J. Volume: 64 Issue: 11 Pages: 3849-3856
  • DOI: 10.1002/aic.16205
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Mechanical properties of hierarchical granular matter (2023)
  • Author(s): H. Katsuragi, F. Okubo, and T. Omura
  • Organizer: The 11th International Conference on Multiphase Flow
  • Int'l Joint Research
• [Presentation] 階層粉体への衝突貫入抵抗力 (2023)
  • Author(s): 大久保文暁, 桂木洋光
  • Organizer: 日本物理学会 2023年春季大会
• [Presentation] Relation between bidispersivity and ordered structure in a compressed two-dimensional magnet-particle system (2023)
  • Author(s): K. Tsuchikusa, K. Yamamoto, M. Katsura, and H. Katsuragi,
  • Organizer: The 11th International Conference on Multiphase Flow
  • Int'l Joint Research
• [Presentation] The effect of asymmetry and pressure balance in granular capillary phenomena (2023)
  • Author(s): Y. Yamamoto, K. Yamamoto, M. Katsura, and H. Katsuragi
  • Organizer: The 11th International Conference on Multiphase Flow
  • Int'l Joint Research
• [Presentation] Slipping and friction of a sphere rolling up a granular slope (2023)
  • Author(s): T. Fukumoto, K. Yamamoto, M. Katsura, and H. Katsuragi,
  • Organizer: The 11th International Conference on Multiphase Flow
  • Int'l Joint Research
• [Presentation] 絡まり構造を持つダストの衝突応答 (2023)
  • Author(s): 岩野志織, 田中玲奈, 桂木洋光
  • Organizer: 日本物理学会 2023年春季大会
• [Presentation] Impact Drag by Fragile Grains (2022)
  • Author(s): Hiroaki Katsuragi
  • Organizer: Granular Matter Gordon Research Conference
  • Int'l Joint Research / Invited
• [Presentation] 階層構造を持つ粉体の衝突応答 (2022)
  • Author(s): 大久保文暁, 桂木洋光
  • Organizer: 第10回ソフトマター研究会
• [Presentation] 2次元回転砂山の変形と摩擦角の体積力依存性 (2022)
  • Author(s): 桂木洋光, 入江輝紀, 渡邊誠一郎, 山口隆正
  • Organizer: 日本物理学会 2022年秋季大会
• [Presentation] Impact drag force exerting on a projectile penetrating into a fragile granular bed (2022)
  • Author(s): 大久保文暁, 桂木洋光
  • Organizer: 日本地球惑星科学連合2022年大会
• [Presentation] 粒状斜面を駆け上がる球の滑りと摩擦 (2022)
  • Author(s): 福本健, 桂誠, 山本憲, 桂木洋光
  • Organizer: 日本物理学会 2022年秋季大会
• [Presentation] 太管現象における非対称性の効果 (2022)
  • Author(s): 山本侑樹, 桂木洋光, 山本憲, 桂誠
  • Organizer: 日本物理学会 2022年秋季大会
• [Presentation] 二次元磁石粒子系の圧縮に伴う粒子サイズ二分散性と秩序度合いの関係 (2022)
  • Author(s): 土草一輝, 桂木洋光, 桂誠, 山本憲
  • Organizer: 日本物理学会 2022年秋季大会
• [Presentation] Phase diagram of vertically vibrated powder bed (2022)
  • Author(s): P. R. Sonar and H. Katsuragi
  • Organizer: The 15th Asia Pacific Physics Conference
  • Int'l Joint Research
• [Presentation] 液滴の粉体層衝突による粉体スプラッシュのターゲット依存性評価 (2022)
  • Author(s): 張イ, 山本憲, 桂木洋光
  • Organizer: 混相流シンポジウム2022
• [Presentation] Water Retention in Model Soil Aggregates (2022)
  • Author(s): 保田彪賀, 桂誠, 桂木洋光
  • Organizer: 日本地球惑星科学連合2022年大会
• [Presentation] Effect of “fibrous materials” on dust agglomeration (2022)
  • Author(s): 田中玲奈, 岩野志織, 桂木洋光
  • Organizer: 日本地球惑星科学連合2022年大会
• [Presentation] 宇宙・地球・生態を貫く粉体の物理 (2022)
  • Author(s): 桂木洋光
  • Organizer: 航空宇宙学会関西支部 第480回航空宇宙懇談会
  • Invited
• [Presentation] 団粒構造による土壌の保水性評価 (2022)
  • Author(s): 保田彪賀, 桂誠, 桂木洋光
  • Organizer: 日本物理学会 第77回年次大会
• [Presentation] 粉体ヒープの回転による付着力評価 (2022)
  • Author(s): 入江輝紀, 山口隆正, 渡邊誠一郎, 桂木洋光
  • Organizer: 日本物理学会 第77回年次大会
• [Presentation] 粉体内の巨視的応力分布のガラス的不規則構造 (2022)
  • Author(s): 桂木洋光
  • Organizer: 日本物理学会 第77回年次大会
  • Invited
• [Presentation] 微粒子凝集体群の圧縮により生じる圧縮力の周期的ゆらぎ (2021)
  • Author(s): 桂木洋光, F. Pacheco-Vazquez, 大村知美
  • Organizer: 日本地球惑星科学連合2021年大会
• [Presentation] 団粒構造による土壌の保水性評価 (2021)
  • Author(s): 保田彪賀, 桂誠, 桂木洋光
  • Organizer: 混相流シンポジウム2021
• [Presentation] 階層的構造を持つ粉体における固体弾自由落下衝突ダイナミクスの実験的研究 (2021)
  • Author(s): 大久保文暁, 桂木洋光
  • Organizer: 混相流シンポジウム2021
• [Presentation] Physical characterization of novel phenomena found in a vibrated powder bed (2021)
  • Author(s): P. R. Sonar and H. Katsuragi
  • Organizer: The 8th Asian Particle Technology Symposium
  • Int'l Joint Research
• [Presentation] Water retention in model soil aggregates (2021)
  • Author(s): H. Yasuda, M. Katsura, and H. Katsuragi
  • Organizer: The 8th Asian Particle Technology Symposium
  • Int'l Joint Research
• [Presentation] Impact dynamics in hierarchically structured granular materials (2021)
  • Author(s): F. Okubo and H. Katsuragi
  • Organizer: The 8th Asian Particle Technology Symposium
  • Int'l Joint Research
• [Presentation] Measuring cohesion by rotating a granular pile (2021)
  • Author(s): H. Katsuragi, T. Irie, R. Yamaguchi, and S. Watanabe
  • Organizer: The 8th Asian Particle Technology Symposium
  • Int'l Joint Research
• [Presentation] 粉体層の一軸圧縮時に現れる圧縮力振動 (2021)
  • Author(s): 桂木洋光, F. Pacheco-Vazquez, 大村知美
  • Organizer: 日本物理学会 第76回年次大会
• [Presentation] 階層的構造を持つ粉体における衝突ダイナミクスの実験的研究 (2021)
  • Author(s): 大久保文暁, 桂木洋光
  • Organizer: 日本物理学会 第76回年次大会
• [Presentation] 階層構造を持つ粉体層の圧縮力振動 (2020)
  • Author(s): 桂木洋光，F. Pacheco-Vazquez，大村知美
  • Organizer: 粉体工学会 2020年度秋期研究発表会
• [Presentation] 衝突による粉粒体の変形と流れ (2020)
  • Author(s): 桂木洋光
  • Organizer: 混相流シンポジウム2020
  • Invited
• [Presentation] 遠心力による砂山の形状変化および流動特性 (2020)
  • Author(s): 入江輝紀, 山口隆正, 渡邊誠一郎, 桂木洋光
  • Organizer: 日本惑星科学会 2020年秋季講演会
• [Presentation] 衝突クレーター形成に伴う粉体斜面崩壊に関する実験的研究 (2020)
  • Author(s): 大村知美, 滝澤真太, 桂木洋光
  • Organizer: 混相流シンポジウム2020
• [Presentation] 2次元粉体層からの棒引き抜きによる応力鎖構造の実験的研究 (2020)
  • Author(s): 大久保文暁, 桂木洋光
  • Organizer: 混相流シンポジウム2020
• [Presentation] 回転実験による砂山形状変化のヒステリシスと自転コマ型小惑星の形状安定性 (2020)
  • Author(s): 入江輝紀, 山口隆正, 渡邊誠一郎, 桂木洋光
  • Organizer: 混相流シンポジウム2020
• [Presentation] Experimental study on the relaxation of slope terrain due to small-scale impact (2020)
  • Author(s): T. Omura, S. Takizawa, and H. Katsuragi
  • Organizer: JpGU-AGU Joint meeting 2020
• [Presentation] ダスト凝集体および階層粉体への固体弾衝突実験 (2020)
  • Author(s): 桂木洋光，J. Blum
  • Organizer: 第36回Grain Formation Workshop
• [Presentation] 傾斜粉体層への斜め衝突クレータリングのスケーリング解析 (2019)
  • Author(s): 滝澤真太，桂木洋光
  • Organizer: 第９回ソフトマター研究会
• [Presentation] 非ブラウン粒子懸濁液への固体弾衝突とその跳ね返り (2019)
  • Author(s): 江川嘉寿也，桂木洋光
  • Organizer: 日本物理学会2019年秋季大会
• [Presentation] Scaling of oblique impact cratering onto inclined granular layer (2019)
  • Author(s): 滝澤真太，桂木洋光
  • Organizer: 日本地球惑星科学連合2019年大会
• [Presentation] Viscoelastic characterization of a solid projectile impact onto a dense potato starch suspension (2019)
  • Author(s): 江川嘉寿也，桂木洋光
  • Organizer: 日本地球惑星科学連合2019年大会
• [Presentation] 凝集体粒子群の微小重力下での衝突膨張 (2019)
  • Author(s): 桂木洋光，J. Blum
  • Organizer: 粉体工学会 2019年度春期研究発表会
• [Presentation] 微粒子凝集粉体の衝突ダイナミクス (2019)
  • Author(s): 桂木洋光
  • Organizer: 粉体工学会 「計算粉体力学研究会」（第57回）
  • Invited
• [Presentation] 2次元粉体層からの棒引き抜きによる応力鎖構造の実験的研究 (2019)
  • Author(s): 大久保文暁，桂木洋光
  • Organizer: 日本物理学会 第75回年次大会
• [Presentation] 衝突クレータリングによる粉体斜面崩壊に関する実験的研究 (2019)
  • Author(s): 大村知美，滝澤真太，桂木洋光
  • Organizer: 日本物理学会 第75回年次大会
• [Presentation] 小規模衝突による傾斜地形緩和に関する実験的研究 (2019)
  • Author(s): 大村知美，滝澤真太，桂木洋光
  • Organizer: 第９回ソフトマター研究会
• [Presentation] 小規模衝突による傾斜地形緩和に関する実験的研究 (2019)
  • Author(s): 大村知美，滝澤真太，桂木洋光
  • Organizer: 日本惑星科学会 2019年秋季講演会
• [Presentation] 地球惑星科学におけるクレーター形成実験に用いる10～100m/s可変の衝突実験装置の設計法と3Dプリンティング技術活用による開発について (2019)
  • Author(s): 山口隆正，滝澤真太，桂木洋光
  • Organizer: 日本機械学会 2019年度年次大会
• [Presentation] Probing viscoelasticity of dilatant fluid by solid projectile impact (2019)
  • Author(s): K. Egawa and H. Katsuragi
  • Organizer: American Physical Society March Meeting 2019
  • Int'l Joint Research
• [Presentation] Cratering and collapse of an inclined granular layer by oblipue impact of a spherical projectile (2019)
  • Author(s): S. Takizawa, R. Yamaguchi, and H. Katsuragi
  • Organizer: American Physical Society March Meeting 2019
  • Int'l Joint Research
• [Presentation] Granular flow dynamics in a vibrating system from multiple points of view: Laboratory experiments, continuum modeling, and numerical simulations (2019)
  • Author(s): D. Tsuji, M. Otsuki, and H. Katsuragi
  • Organizer: American Physical Society March Meeting 2019
  • Int'l Joint Research
• [Presentation] 階層粉体クラスターの微小重力下での衝突誘起膨張のエネルギースケーリング (2019)
  • Author(s): 桂木洋光，J. Blum
  • Organizer: 日本物理学会第74回年次大会
• [Presentation] 傾斜粉体層への斜め衝突クレータリング (2018)
  • Author(s): 滝澤真太，桂木洋光
  • Organizer: 第14回衝突研究会 研究集会「天体の衝突物理の解明 (XIV) 」
• [Presentation] Solid projectile impact onto a porous dust aggregate consisting of micrometer-sized particles (2018)
  • Author(s): H. Katsuragi
  • Organizer: Southern Workshop on Granular Materials 2018
  • Int'l Joint Research / Invited
• [Presentation] Granular flow driven by vibration and its application to the crater relaxation process on a small planet (2018)
  • Author(s): D. Tsuji, M. Otsuki, and H. Katsuragi
  • Organizer: AGU fall meeting 2018
  • Int'l Joint Research
• [Presentation] Large frictional drag by shear-induced solidification of granular layer (2018)
  • Author(s): T. Furuta, S. Kumar, K. Anki Reddy, H. Niiya and H. Katsuragi
  • Organizer: Physics of Jammed Matter
  • Int'l Joint Research
• [Presentation] Cratering and collapse by oblique impact onto an inclined granular layer (2018)
  • Author(s): S. Takizawa and H. Katsuragi
  • Organizer: Physics of Jammed Matter
  • Int'l Joint Research
• [Presentation] Probing viscoelasticity of dilatant fluid by solid projectile impact (2018)
  • Author(s): K. Egawa and H. Katsuragi
  • Organizer: Physics of Jammed Matter
  • Int'l Joint Research
• [Presentation] Granular flow dynamics under a vibrating system (2018)
  • Author(s): D. Tsuji, M. Otsuki, and H. Katsuragi
  • Organizer: Physics of Jammed Matter
  • Int'l Joint Research
• [Presentation] Jamming-originated large frictional force exerted on a rod withdrawn from granular layer (2018)
  • Author(s): 古田尊経，新屋啓文，桂木洋光
  • Organizer: 日本地球惑星科学連合2018年大会
  • Int'l Joint Research
• [Presentation] ぬれた粉体層中の横穴構造の安定性と砂浜のカニの巣穴の力学特性 (2018)
  • Author(s): 篠田明友子，藤原慎一，新屋啓文，桂木洋光
  • Organizer: 粉体工学会 2018年度春期研究発表会
• [Presentation] 粉体層からの棒引き抜き抵抗とシアー・ジャミング (2018)
  • Author(s): 古田尊経，新屋啓文，桂木洋光
  • Organizer: ガラス転移と関連分野の最先端研究
• [Remarks] プロジェクト研究課題 「階層粉体の基礎物理特性解明と衝突応答」
  • URL: http://life.ess.sci.osaka-u.ac.jp/project.html
• [Funded Workshop] Discussion meeting on Granular dynamics & Planetary terrain (2019)