HARA Kensuke

Affiliation

Faculty of Engineering, Division of Systems Research

Job Title

Associate Professor

Related SDGs



Degree 【 display / non-display

  • Doctor of Engineering -  Tokyo Institute of Technology

Campus Career 【 display / non-display

  • 2020.04
    -
    Now

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

  • 2020.04
    -
    Now

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

  • 2020.04
    -
    Now

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

Field of expertise (Grants-in-aid for Scientific Research classification) 【 display / non-display

  • Dynamics/Control

 

Papers 【 display / non-display

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

  • 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

    Grant-in-Aid for Young Scientists(B)

    Project Year: 2015.04  -  2018.03  Investigator(s): Kensuke Hara

     View Summary

    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

    Grant-in-Aid for Young Scientists(B)

    Project Year: 2012.04  -  2015.03  Investigator(s): Kensuke Hara

     View Summary

    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.

Presentations 【 display / non-display