Research Career 【 display / non-display 】

Research Career 【 display / non-display 】

• Study on terramechanics

  The Other Research Programs  

  Project Year：  -   

• Study on friction model

  Project Year：  -   

• Finite element analysis of Frictional contact problem

  Project Year：  -   

Books 【 display / non-display 】

Books 【 display / non-display 】

• Disaster Robotics

  Fumio Kanehiro, Shin’ichiro Nakaoka, Tomomichi Sugihara, Naoki Wakisaka, Genya Ishigami, Shingo Ozaki, Satoshi Tadokoro (Part： Contributor )

  Springer  2019.03 ISBN: 10: 3030053202

  　View Summary

  Fumio Kanehiro, Shin’ichiro Nakaoka, Tomomichi Sugihara, Naoki Wakisaka, Genya Ishigami, Shingo Ozaki, Satoshi Tadokoro, “Simulator for Disaster Response Robotics”, Disaster Robotics, pp. 453-477, Springer, March. 2019. ISBN-10: 3030053202

• Disaster Robotics

  Hiroshi Yoshinada, Keita Kurashiki, Daisuke Kondo, Keiji agatani, Seiga Kiribayashi, Masataka Fuchida, Masayuki Tanaka, Atsushi Yamashita, Hajime Asama, Takashi Shibata, Masatoshi Okutomi, Yoko Sasaki, Yasuyoshi Yokokohji, Masashi Konyo, Hikaru Nagano, Fumio Kanehiro, Tomomichi Sugihara, Genya Ishigami, Shingo Ozaki, Koich Suzumori, Toru Ide, Akina Yamamoto, Kiyohiro Hioki, Takeo Oomichi, Satoshi Ashizawa, Kenjiro Tadakuma, Toshi Takamori, Tetsuya Kimura, Robin R Murphy, Satoshi Tadokoro (Part： Contributor )

  Springer  2019.03 ISBN: 10: 3030053202

  　View Summary

  Hiroshi Yoshinada, Keita Kurashiki, Daisuke Kondo, Keiji agatani, Seiga Kiribayashi, Masataka Fuchida, Masayuki Tanaka, Atsushi Yamashita, Hajime Asama, Takashi Shibata, Masatoshi Okutomi, Yoko Sasaki, Yasuyoshi Yokokohji, Masashi Konyo, Hikaru Nagano, Fumio Kanehiro, Tomomichi Sugihara, Genya Ishigami, Shingo Ozaki, Koich Suzumori, Toru Ide, Akina Yamamoto, Kiyohiro Hioki, Takeo Oomichi, Satoshi Ashizawa, Kenjiro Tadakuma, Toshi Takamori, Tetsuya Kimura, Robin R Murphy, Satoshi Tadokoro Dual-Arm Construction Robot with Remote-Control Function”, Disaster Robotics, pp. 195-264, Springer, March2019. ISBN-10: 3030053202

• Elucidation and Control of Tribology by Numerical Simulation and Surface Analysis

  (Part： Contributor )

  2018.03

• Elastoplastic analogy constitutive model for rate-dependent frictional sliding: Mechanics and Model-Based Control of Advanced Engineering Science (eds. Belyaev, A.K., Irschik, H., Krommer, M.)

  尾崎伸吾，橋口公一 (Part： Joint Work , Range: PP.239-246を担当． )

  Springer  2014.01

  　View Summary

  非古典弾塑性論に基づく速度依存性摩擦構成式の定式化について解説した．また，機械工学上，非常に重要となるスティックスリップ運動の解析への適用性について，V&Vを含めて紹介した。さらに，速度依存性摩擦構成式を有限要素法に実装することにより，連続体力学の枠組みの中でトライボロジーと材料強度の問題を同時に検討し得る手法として紹介した。

Thesis for a degree 【 display / non-display 】

Thesis for a degree 【 display / non-display 】

• 弾塑性論に基づく速度・状態依存性摩擦構成式の提案と境界地問題への適用

  尾崎伸吾 

    2013.09

  Doctoral Thesis   Single Work

  　View Summary

  横浜国立大学　工学府　システム統合工学専攻　論文博士 本論文は，速度・状態依存性摩擦モデルの提案とその異方性モデルへの拡張に関する内容，並びに提案モデルを用いた境界値問題への新しいアプローチ手法について論じたものである。提案モデルは非古典弾塑性論に基づいて定式化されており，基本的な速度・状態依存性すべり摩擦現象を合理的に記述し得る。また，提案モデルを有限要素法に導入することにより，境界値問題に対する新しい数値解析的アプローチ手法を提案した。

• Proposal of unconventional friction model based on the subloading surface concept and its application to finite element analyses

  S.Ozaki 

    2005.03

  Doctoral Thesis   Single Work

• 下負荷面モデル導入による走行車輪下の地盤変形挙動の弾塑性有限要素解析

  尾崎　伸吾 

    2002.03

  Master Thesis   Single Work

  　View Summary

  九州大学　生物資源環境科学府　生産環境科学専攻 弾塑性有限要素法を用いて，走行車輪と地盤の相互作用現象の数値解析を行った．また，PIV変位計測システムを開発するとともに，車輪荷重，すべり率および土壌条件を調整した走行実験を行い，有限要素解析手法の妥当性を検証した。特に，すべり率とけん引特性の関係を明らかにした。

Papers 【 display / non-display 】

Papers 【 display / non-display 】

• Study on applicability of RFT to traveling analysis of wheel with grousers: Comparison with DEM analysis as a virtual test

  Suzuki Hirotaka, Katsushima Kota, Ozaki Shingo

  JOURNAL OF TERRAMECHANICS   83   15 - 24   2019.06  [Refereed]

  Joint Work

  Web of Science DOI

• DEM analysis of interaction between blade and wood rubble

  Katsushima, K., Suzuki, H., Ozaki, S.

  Proceedings of the 10th Asia-Pacific Conference of the ISTVS   ( Paper 29 )   1 - 5   2018.07  [Refereed]

  Joint Work

• Terramechanics analysis of wheel with grousers based on extended RFT

  Hirotaka Suzukia, Kota Katsushimaa, Shingo Ozakia, Taizo Kobayashi

  Proceedings of the 10th Asia-Pacific Conference of the ISTVS   ( Paper 19 )   1 - 10   2018.07  [Refereed]

  Joint Work

• Simple prediction method for rubber adhesive friction by the combining friction test and FE analysis

  Ozaki, S., Mieda, K., Matsuura, T.

  Lubricants ( MDPI )  6 ( 2 )   38   2018.04  [Refereed]

  Joint Work

  Web of Science DOI

• Finite element analysis of fracture statistics of ceramics: Effects of grain size and pore size distributions

  Shingo Ozaki,Yuya Aoki,Toshio Osada,Kyohei Takeo,Wataru Nakao

  Journal of the American Ceramic Society ( WILEY )  101 ( 7 )   3191 - 3204   2018.02  [Refereed]

  Joint Work

  Web of Science DOI

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Grant-in-Aid for Scientific Research 【 display / non-display 】

Grant-in-Aid for Scientific Research 【 display / non-display 】

• Grant-in-Aid for challenging Exploratory Research

  Project Year： 2016.04  -  2018.03  Investigator(s): Shingo Ozaki

• Grant-in-Aid for Scientific Research(C)

  Project Year： 2013.04  -  2016.03 

• Grant-in-Aid for challenging Exploratory Research

  Project Year： 2013.04  -  2015.03 

• Grant-in-Aid for Young Scientists(B)

  Project Year： 2011.04  -  2013.03 

Presentations 【 display / non-display 】

Presentations 【 display / non-display 】

• Extension of soil excavation model in disaster response simulator using discrete element method

  KATSUSHIMA Kota, SUZUKI Hirotaka, ISHIGAMI Genya, OZAKI Shingo

  The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec)  2018   The Japan Society of Mechanical Engineers

  　View Summary

  <p>Numerous studies on sandy soil using DEM have been conducted, but sandy soil alone is insufficient under disaster area and extreme environments. However, simulators of autonomous construction robot mainly target sandy soil, and few studies targeting other soils and materials. In this study, a numerical analysis using cohesive soil and rubble in addition to sandy soil was performed using DEM. As a results, it was possible to express the cohesive of the soil and perform excavation analysis. In addition, for wood rubble, it was possible to perform simulation using wood rubble model using parameters decided in three-point bending test.</p>

  DOI CiNii

• Towards High-fidelity Simulator of Construction Machine Based on Accurate Machine-soil Interaction Mechanics:-Modeling and evaluation of bucket and track mechanics for dynamic simulator-

  ISHIGAMI Genya, TSUCHIYA Kenji, ISHIBASHI Satoshi, OMURA Takuya, OZAKI Shingo

  The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec)  2018   The Japan Society of Mechanical Engineers

  　View Summary

  <p>This paper reports updates of our development in a high-fidelity dynamic simulator for a construction machine. The updates are related to an accurate modeling and evaluation of the bucket-terrain interaction model, an experimental observation of pressure distribution beneath single track, and a dynamic simulator for a dual-arm tele-operated construction machine. As for the former two updates, we employed a built-in sensor approach. The bucket or track literally possesses tiny force sensors on its surface and captures the contact mechanics generated at the interaction boundary between the machine and loose sand. The dynamic simulator developed in this work addresses a construction machine as an articulated multibody dynamics. The simulator is then used for an assessment of possible motion candidates of a dual-arm construction machine in challenging environment.</p>

  DOI CiNii

• Scatter prediction and size effect of ceramics strength by finite element analysis

  TAKEO Kyohei, AOKI Yuya, OSADA Toshio, NAKAO Wataru, OZAKI Shingo

  The Proceedings of Mechanical Engineering Congress, Japan  2018   The Japan Society of Mechanical Engineers

  　View Summary

  <p>A novel numerical simulation method based on finite element analysis (FEA), which can evaluate the fracture probability caused by the characteristics of flaw distribution, is considered an effective tool to facilitate and increase the use of ceramics in components and members. In this study, we propose an FEA methodology to predict the scatter of ceramic strength. And the influence of effective volume can be expressed by proposed FEA methodology. First, we obtained microscopic tissue information from ceramics images and transformed them into fracture mechanics models, we numerically create a Weibull distribution based on multiple FEA results of a three-point bending test. Its validity is confirmed by a quantitative comparison with the actual test results. Next, by analyzing with different test specimens and test method and creating a Weibull distribution, it was shown that as the effective volume becomes larger, the strength decreases and the variation becomes smaller. In this way, the relationship between breaking strength and effective volume could be evaluated.</p>

  DOI CiNii

• Study on grouser shape of moon / planet exploration rover

  SUZUKI Hirotaka, ASO Ryota, OZAKI Shingo

  The Proceedings of JSME annual Conference on Robotics and Mechatronics (Robomec)  2018   The Japan Society of Mechanical Engineers

  　View Summary

  <p>In this study, we proposed the wheel shape with high traveling performance. First, simple penetration tests were carried out by DEM which is widely used for analysis on soil, and it was suggested that high traveling performance is exhibited by "packing effect" generated in the proposed shape. Then, we conducted the model experiments. It was confirmed that the sinkage was suppressed by the proposed shape, and was also confirmed that the equivalent drawbar-pull as that by the conventional shape widely used is generated. Therefore, it is suggested that the wheel having the proposed shape is difficult to be stuck than conventional one. In the future, we plan to study the optimum specification of the proposed shape.</p>

  DOI CiNii

• Terramechanics analysis of wheel with grousers based on resistive force theory

  H. Suzuki, S. Ozaki

  Proceedings of the 19th International and 14th European-African Regional Conference of the ISTVS   (Budapest, Hungary)  2017.09.25  

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Preferred joint research theme 【 display / non-display 】

Preferred joint research theme 【 display / non-display 】