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Pattern Formation of Flexible Structure by Interaction with Eenvironment

Research Project

Project/Area Number 11650246
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Dynamics/Control
Research InstitutionKOBE UNIVERSITY

Principal Investigator

KAWAMURA Shozo  Kobe University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (00204777)

Co-Investigator(Kenkyū-buntansha) ADACHI Kazuhiko  Kobe University, Faculty of Engineering, Research Associate, 工学部, 助手 (30243322)
Project Period (FY) 1999 – 2000
Project Status Completed (Fiscal Year 2000)
Budget Amount *help
¥3,400,000 (Direct Cost: ¥3,400,000)
Fiscal Year 2000: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1999: ¥2,600,000 (Direct Cost: ¥2,600,000)
KeywordsFlexible Structure / Discrete Method / Cellular Automata / Nonlinear System / Vibration Mode / Wave propagation / Pattern Formation
Research Abstract

1. Dynamic Response Analysis of Structure by Using the Discrete Computation Method The dynamic response of flexible structures with non-linearity are analyzed by using the Cellular Automata (CA) method, which is one of the discrete computation method. The equivalent condition of force is considered as the interaction between the structure and environment, and the local rules are derived from the conditions. The forced oscillations are calculated by using the CA method and the results are compared with the ones obtained by using the conventional method. It was seen that the results agree well.
2. Applications of the Proposed Computation Method
(1) Active Vibration Control : The vibration of a string is actively controlled by the control rule. The simulation can be carried out by using the CA method.
(2) Wave Propagation of Earthquake : The wave propagation phenomenon of earthquake is calculated by using the CA method. It was seen that the computation time can be much reduced.
3. Experimental Study
The thin plate is considered as the flexible structure and is acoustically excited. The steady state responses by experiment can be simulated by using the CA method when the excitation force is weak. But when the excitation force is strong, there are not only the structural non-linearity but also the non-linearity of excitation. So the experimental and simulated results do not agree well. It is necessary that the non-linearity of excitation is considered in the simulation.

Report

(3 results)
  • 2000 Annual Research Report   Final Research Report Summary
  • 1999 Annual Research Report
  • Research Products

    (7 results)

All Other

All Publications (7 results)

  • [Publications] Shozo Kawamura: "Nonlinear Dynamic Analysis of a String by Using Cellular Automata Method"Proceedings of the Asia-Pacific Vibration Conference'99. 2. 1118-1123 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] 河村庄造: "セルラオートマトン法を用いた非線形特性を有する弦の強制振動解析"日本機械学会D&D Conference2000CD-ROM論文集. 6(CD-ROM). (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shozo Kawamura: "Nonlinear Dynamic Analysis of a String by Using Cellular Automata Method"Proceedings of the Asia-Pacific Vibration Conference'99. Vol.2. 1118-1123 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shozo Kawamura: "Analysis of Nonlinear Forced Oscillation of a String by Using Cellular Automata Method"Proceedings of JSME D & D Conference 2000. No.00-6, on CD-ROM. (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2000 Final Research Report Summary
  • [Publications] Shozo Kawamura: "Nonlinear Dynamic Analysis of a String by Using Cellular Automata Method"Proceedings of the Asia-Pacific Vibration Conference '99. 2. 1118-1123 (1999)

    • Related Report
      2000 Annual Research Report
  • [Publications] 河村庄造: "セルラオートマトン法を用いた非線形特性を有する弦の強制振動解析"日本機械学会D & D Conference 2000 CD-ROM論文集. 6(CD-ROM). (2000)

    • Related Report
      2000 Annual Research Report
  • [Publications] Shozo Kawamura: "Nonlinear Dynamic Analysis of a String by Using Cellular Automata Method"Proceedings of the Asia-Pacific Vibration Conference'99. 2. 1118-1123 (1999)

    • Related Report
      1999 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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