HARA Kensuke

Affiliation

Faculty of Engineering, Division of Systems Research

Job Title

Associate Professor

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Degree 【 display / non-display 】

  • Doctor of Engineering - Tokyo Institute of Technology

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Campus Career 【 display / non-display 】

  • 2020.4
    　
    　

    Duty   Yokohama National UniversityFaculty of Engineering   Division of Systems Research   Associate Professor  

  • 2020.4
    　
    　

    Concurrently   Yokohama National UniversityGraduate school of Engineering Science   Department of Mechanical Engineering, Materials Science and Ocean Engineering   Specialization in Mechanichal Engineering   Associate Professor  

  • 2020.4
    　
    　

    Concurrently   Yokohama National UniversityCollege of Engineering Science   Department of Mechanical Engineering, Materials Science and Ocean Engineering   Mechanical Engineering Program   Associate Professor  

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Research Areas 【 display / non-display 】

  • Informatics / Mechanics and mechatronics

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Papers 【 display / non-display 】

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

  • 幾何学的整合性を保証する物理モデルと固有直交分解を併用したパラメータ推定法の構築

    2022.4 - 2025.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(C)

    Investigator(s)：原 謙介

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    Grant type：Competitive

  • 拘束の概念の拡張による流体構造連成問題の新たな表現法の構築と数値解析の高度化

    2018.4 - 2021.3

    科学研究費補助金  Grant-in-Aid for Scientific Research(C)

    Investigator(s)：原 謙介

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    Grant type：Competitive

  • Development of the method for multibody system analysis based on the canonical theory for constrained system applicable to the parallel computation and the state estimation

    2015.4 - 2018.3

    Grant-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists(B)

    Investigator(s)：Kensuke Hara

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    Grant type：Competitive

    In the design of a floating production, storage and offloading (FPSO) unit and a floating offshore wind turbine, it is important to evaluate dynamical behavior of systems with floating structures and devices connected by mooring lines and riser cables for carrying resources, supplying energy and so on.
    This study focuses on a multi-body system with huge degrees of freedom and develops a model applicable to the parallel computation and the state estimation techniques. The present model introduces an incremental description of rotation of the body, which ensures a computation accuracy regarding a time step size. In addition, the local Lagrange multiplier method is employed for development of the model applicable to the parallel computation technique. Then, the proposed method is validated by comparisons with experimental results and a conventional method.

  • Development of an alternative analytical method for the flow-induced vibration of flexible structures based on the canonical theory for the constrained system

    2012.4 - 2015.3

    Grant-in-Aid for Scientific Research  Grant-in-Aid for Young Scientists(B)

    Investigator(s)：Kensuke Hara

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    Grant type：Competitive

    The flow-induced vibration for flexible thin plates and membranes surrounded by a fluid flow is an important engineering topic in the state-of-the-art manufacturing technology for the functional flexible membranous products, such as rollable solar panels, LED panels and so on.
    We proposed an alternative analytical method for a description of the fluid-structure interaction problem based on the canonical theory for the constrained system. The proposed method is inspired by a numerical approach for multi-body system dynamics. In addition, this study developed a stability analysis method for a prediction of the flow-induced vibration. Then, the boundary condition for pressure, widely used in this problem, was verified by prospective vibration behavior. The proposed method was validated by comparing with results in the literatures.

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Presentations 【 display / non-display 】

  • Effects of Fluid forces on instability of mooring chains

    Kensuke Hara, Kazuaki Shimojima, Taihei Yamaguchi

    2023.8 

    DOI

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    Event date： 2023.8

    Language：Japanese   Presentation type：Oral presentation (general)  

    Country：Japan  

  • Parameter identification method for multibody systems incorporating the adjoint method and the proper orthogonal decomposition

    Ryoya Nishi, Kensuke Hara, Hiroshi Yamaura

    11th ECCOMAS Thematic Conference on Multibody Dynamics  2023.7  ECCOMAS

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    Event date： 2023.7

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Lisbon, Portugal   Country：Portugal  

  • Analysis of nonlinear steady state responses for sloshing based on a constrained formulation

    Kensuke Hara

    29th International Congress on Sound and Vibration  2023.7  The International Institute of Acoustics and Vibration

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    Event date： 2023.7

    Language：English   Presentation type：Oral presentation (general)  

    Venue：Prague, Czech Republic   Country：Czech Republic  

  • Nonlinear dynamics analysis of variable length flexible beams using the ALE-ANCF method

    Hayato Muraki, Kensuke Hara

    2022.9 

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

  • Parameter identification method for multibody systems incorporating the adjoint method and feature extraction based on the proper orthogonal decomposition

    Nishi Ryoya, Kensuke Hara, Hiroshi Yamaura

    2022.9 

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    Event date： 2022.9

    Language：Japanese   Presentation type：Oral presentation (general)  

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Charge of on-campus class subject 【 display / non-display 】

  • 2024   Advanced Lectures on Dynamics of Mechines

    Graduate school of Engineering Science

  • 2024   Manufacturing of Integrated Systems B

    Graduate school of Engineering Science

  • 2024   Manufacturing of Integrated Systems A

    Graduate school of Engineering Science

  • 2024   Design of Integrated Systems B

    Graduate school of Engineering Science

  • 2024   Design of Integrated Systems A

    Graduate school of Engineering Science

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