Explicit Integration Scheme for Hybrid Aerodynamic Vibration Technique with Equivalent Unconditional Stability<br>-Verification for Elastic-Plastic Behavior in Multi-Degree-of-Freedom-System-

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  • OUGIYA Narumi
    Haseko Corporation
  • TANIWAKI Sawa
    Central Administration Office Nihon University
  • KANDA Makoto
    Dept. of Architecture and Architectural Engineering, College of Industrial Technology, Nihon Univ.
  • MARUTA Eizo
    Dept. of Architecture and Architectural Engineering, College of Industrial Technology, Nihon Univ.

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Other Title
  • ハイブリッド空力振動法に適用する無条件安定と等価な陽的積分法―多自由度系弾塑性挙動に対する検討―
  • ハイブリッド クウリキ シンドウホウ ニ テキヨウスル ムジョウケン アンテイ ト トウカナ ヨウテキ セキブンホウ タ ジユウドケイ ダンソセイ キョドウ ニ タイスル ケントウ

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Abstract

This paper examines accuracy and applicability of the modal-explicit technique in numerical experiments and the New Hybrid Aerodynamic Vibration Technique. The modal-explicit technique is a numerical integration technique which is combination of Newmark Explicit method with modal truncation technique in order to secure stability of solution and simple algorithm. In the numerical experiments, the accuracy of solution is verified by using three types of lumped-mass model. It is difficult for a numerical integration technique to obtain stable solution because all the models include high frequency vibration modes. The hysteretic curve in the each story has non-linearity. The random vibration behavior is followed by the modal-explicit technique, the accuracy and stability is satisfied. In the New Hybrid Aerodynamic Vibration system, that is set in the modal-explicit technique as a numerical integration technique, unstable wind response of a base-isolated high rise building is simulated. The accuracy is satisfied, too.

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