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Stuby of Nonlinear Vibration Characteristics of Rubber Base Isolation System with Hysteresis Characteristics Depending on Frequency and Amplitude of Displacement

Research Project

Project/Area Number 04650529
Research Category

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

Allocation TypeSingle-year Grants
Research Field Building structures/materials
Research InstitutionCOLLEGE OF INDUSTRIAL TECHNOLOGY NIHONUNIVERSITY

Principal Investigator

SHIBATA Koichi  NIHONUNIVERSITY, COLLEGE OF INDUSTRAIAL TECHNOLOGY, Dr.Prof., 生産工学部, 教授 (00059726)

Project Period (FY) 1992 – 1993
Project Status Completed (Fiscal Year 1993)
Budget Amount *help
¥1,100,000 (Direct Cost: ¥1,100,000)
Fiscal Year 1993: ¥400,000 (Direct Cost: ¥400,000)
Fiscal Year 1992: ¥700,000 (Direct Cost: ¥700,000)
KeywordsRubber / Nonlinear Vibration / Hysteresis Characteristics / Spring Constant / Damping Factord / Amplitude of Desplacement / Frequency / 非線型振動
Research Abstract

Study of Nonlinear Vibration Characteristics of Rubber Bearing for Base Isolation System with Hysteresis Characteristics Depending on Frequency Amplitude of Displacement
Thetest pieces were made of high damping rubber bearing material for this study. TOYORUBBER INDUSTRY co-operated with us to fabricate the test pieces for the experiment Hysteresis characteristics data was obtained to analysis nonlinear vibrational properties of rubber. We experimented with the following two test pieces.
a) Surface presssure ; 50 kg/cm^2 less
Outer diameter ; 180phi
Interior diameter ; 45phi
Thickness ; 3.4mm
Number of stratum ; 51
Aratio of form S_1 ; 9.9
S_2 ; 0.78
b) Srface pressure ; 100 kg/cm^2 less
Outer diameter ; 130phi
Interior diameter ; 40phi
Thickness ; 2.82mm
Number of stratum ; 33
A ratio of form S_1 ; 7.98
S_2 ; 0.97
The following three test parameters were experimented with 1) Frequency ; 0.1-2.0 Hz 2) Axial force ; 2.4-9.5ton 3) Amplitude ; 1-30mm
The following results were obtained :
1) Wecould determine the vibrational properties of the rubber bearing for a base isolation system (dynamic spring constant K and damping factor C) by changing the hysteresis characteristics of the rubber bearing base isolation system using restoring force model of the power function type. We could also prove the accuracyand correctness of this method.
Results concerning nonlinear vibrational properties of rubber in relation o amplitude, as the amplitude increases, C and K slowly decrease.
3) As higher frequency's are applied, C decreases and K also decreases, but not as much as C.
4) As the axial force increases, C inreases but K decreases. Since the above four items are understood, now we will study the'effects of stronger nonlinear vibration characteristics of rubber bearing for a base isolation system with larger amplitudes applied. A paper is currently being prepared about this study.

Report

(3 results)
  • 1993 Annual Research Report   Final Research Report Summary
  • 1992 Annual Research Report
  • Research Products

    (11 results)

All Other

All Publications (11 results)

  • [Publications] 柴田耕一 他3名: "ゴムの減衰に関する研究" 日本機械学会 機械力学・計測制御講演論文集. A. 79-83 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 柴田耕一 他2名: "ゴムの振動特性に関する研究(周波数及び変位振幅依存型の非線形振動特性)" 日本機械学会論文集 C編. 59巻564号. 144-150 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 柴田耕一 他2名: "ゴムの振動特性に関する研究(振動応答特性)" 日本大学生産工学部 第26回 学術講演会. 29-32 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 柴田耕一 他2名: "免震用積層ゴムの振動特性に関する研究" 日本大学生産工学部 第26回 学術講演会. 37-40 (1993)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.SHIBATA, K.MISAJI, H.KATO: "Vibration Characteristics of Rubber (Nonlinear Vibration Characteristics Depending on Frequency and Amplitude of Displacement)" Transactions of the Japan Society of Mechanical Engineers. Vo1.59, No.564(C). (1993)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] K.SHIBATA, K.MISAJI, H.KATO: "Vibration Characteristics of Rubber (Nonlinear Vibration Characteristics Depending on Frequency and Amplitude of Displacement)" Transactions of the Japan Society of Mechanical Engineers. Vo1.59, No.564(C). (1993)144-150

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1993 Final Research Report Summary
  • [Publications] 柴田耕一他3名: "ゴムの減衰に関する研究" 日本機械学会機械力学・計測制御講演論文集. A. 79-83 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 柴田耕一他2名: "ゴムの振動特性に関する研究(周波数及び変位振幅依存型の非線形振動特性)" 日本機械学会論文集C編. 59巻564号. 144-150 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 柴田耕一他2名: "ゴムの振動特性に関する研究(振動応答特性)" 日本大学生産工学部第26回学術講演会. 29-32 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 柴田耕一他2名: "免震用積層ゴムの振動特性に関する研究" 日本大学生産工学部第26回学術講演会. 37-40 (1993)

    • Related Report
      1993 Annual Research Report
  • [Publications] 柴田 耕一 他3名: "金属製サイロの構造特性係数の線形時周期による依存性" 日本建築学会構造系論文報告集. 435号. P41-49 (1992)

    • Related Report
      1992 Annual Research Report

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Published: 1992-04-01   Modified: 2016-04-21  

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