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Electromagnetic and mechanical coupled deformation and evaluation parameter of magnetic damping for fusion reactor first wall

Research Project

Project/Area Number 07680542
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Nuclear fusion studies
Research InstitutionKyushu Institute of Technology

Principal Investigator

HORIE Tomoyoshi  Kyushu Institute of Technology, Faculty of Computer Science and systems Engineering, Associate Professor, 情報工学部, 助教授 (40229224)

Co-Investigator(Kenkyū-buntansha) NAKAGAKI Michihiko  Kyushu Institute of Technology, Faculty of Computer Science and systems Engineer, 情報工学部, 教授 (90207720)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥2,000,000 (Direct Cost: ¥2,000,000)
Fiscal Year 1996: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1995: ¥1,500,000 (Direct Cost: ¥1,500,000)
Keywordsmagnetic damping / electromagnetic-mechanical / coupled problem / fusion reactor / first wall / finite element method / coupling intensity parameter / coupled vibration
Research Abstract

Analyzes and experiments on electromagnetic and structural coupled vibration phenomenon or magnetic damping effect are described. The purpose of this study are : (1) To investigate the relation between the magnetic damping effect and the intensity and direction of magnetic field for the mechanical vibration in electromagnetic field ; (2) To determine the parameter of magnetic damping effect by analyzing the change of eigenvalue of the coupled system using finite element method ; (3) To investigate the dependence of the parameter on stiffness, thickness, density and the magnetic field intensity ; (4) To establish the evaluation method of the magnetic damping effect of the fusion reactor first wall.
The results obtained in this study are as follows.
1.Electromagnetic and mechanical coupled experiment
Vibration tests of thin conducting plates were performed in steady magnetic field. The change of natural frequency and the damping rate caused by the coupled effect was measured by use of laser … More deflection sensor and dynamic strain amplifier. The relations between the intensity of magnetic damping and parameters such as Young's modulus, thickness and magnetic field intensity can not be described by an exponential function because of the influence of inductance effect.
2.Consideration on coupling parameter
Finite element analysis and theoretical consideration were performed for the change of eigenvalue, the damping rate, and the change of natural frequency in the magnetic field. The dependence of parameters were clarified.
3.Coupling intensity parameter for the magnetic damping effect
The coupling intensity parameter is proposed as a parameter of magnetic damping effect based on the experimental and numerical results. It is confirmed that the magnetic damping effect is described uniquely using this parameter.
Further investigation is needed for the experiment and analysis of complicated configurations similar to real first wall structures and for preparation for first waall structural design criteria considering the magnetic damping effect. Less

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (17 results)

All Other

All Publications (17 results)

  • [Publications] 堀江知義: "連成固有値に基づく平板たわみ問題の磁気減衰挙動評価" 日本AEM学会誌. 4. 40-45 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Horie: "Coupling Intensity Parameter and its Dependence for Magnetic Damping Problem" JSAEM Studies in Applied Electromagnetics. 4. 61-68 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Horie: "Electromagnetic and Structural Coupled Analysis with the Effect of Large Deflection" IEEE Trans.on Magnetics. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Horie: "Parallel Electromagnetic-mechanical Coupled analysis using Combined Domain Decomposition Method" IEEE Trans.on Magnetics. (in press).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 堀江知義: "磁気減衰振動問題における連成モード合成法" 日本機械学会論文集C編. (印刷中).

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Horie: "Evaluation and Dependence of Magnetic Damping for a Cantilever Plate Bending Problem using Coupling Eigenvalues (in Japanese)" Jorunal of The Japan Society of Applied Electromagnetics and Mechanics. 4. 40-45 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Horie: "Coupling Intensity Parameter and its Dependence for Magnetic Damping Problem" JSAEM Studies in Applied Electromagnetics. 4. 61-68 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Horie: "Electromagnetic and Structural Coupled Analysis with the Effect of Large Deflection" IEEE Trans.on Magnetics. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Horie: "Parallel Electromagnetic-mechanical Coupled analysis using Combined Domain Decomposition Method" IEEE Trans.on Magnetics. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Horie: "Analysis of Magnetic Damping Problem by the Coupled Mode Superposition Method (in Japanese)" Journal of the Japan Society of Mechanical Engineers. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] 堀江知義: "連成固有値に基づく平板たわみ問題の磁気減衰挙動評価" 日本AEM学会誌. 4. 40-45 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Horie: "Coupling Intensity Parameter and its Dependence for Magnetic Damping Problem" JSAEM Studies in Applied Electromagnetics. 4. 61-68 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Horie: "Electromagnetic and Structural Coupled Analysis with the Effect of Large Deflection" IEEE Trans.on Magnetics. (in Press).

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Horie: "Parallel Electromagnetic-mechanical Coupled analysis using Combined Domain Decomposition Method" IEEE Trans.on Magnetics. (in Press).

    • Related Report
      1996 Annual Research Report
  • [Publications] 堀江知義: "磁気減衰振動問題における連成モード合成法" 日本機械学会論文集C編. (印刷中).

    • Related Report
      1996 Annual Research Report
  • [Publications] 堀江知義: "連成固有値に基づく平板たわみ問題の磁気減衰挙動評価" 日本AEM学会誌. 4. (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Horie: "Coupling Intensity Parameter and its Dependence for Magnetic Damping Problem" JSAEM Studies in Applied Electromagnetics. 4. (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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