FRF estimation on rotational DOFs by rigid block attachment approach

Takuya Yoshimura, Naoki Hosoya

研究成果: Conference contribution

2 被引用数 (Scopus)

抄録

Measurement of frequency response function (FRF) has been limited to translational degrees of freedom (DOFs), which restricts the applicability of experimental modal analysis. This paper proposes a new estimation method of FRF on rotational DOFs. In the proposed method a T-shaped rigid block is attached to structure's measurement point; the block is excited by conventional impact hammer; and the rotational FRF as well as translational FRF with respect to the measurement point are estimated after the numerical procedure. It is shown that the FRFs are free from the inertia effect of the T-block. The feasibility of the method is investigated by applying it to a beam structure. The FRFs including the rotational DOFs are estimated. They are used for the prediction of the FRFs of an integrated structure by substructure synthesis approach. The predicted FRFs are compared to FE analysis and also compared to the prediction in which rotational DOFs are excluded.

本文言語English
ホスト出版物のタイトルProceedings of the 25th International Conference on Noise and Vibration Engineering, ISMA
ページ1043-1049
ページ数7
出版ステータスPublished - 2000 12 1
外部発表はい
イベントProceedings of the 25th International Conference on Noise and Vibration Engineering, ISMA - Leuven, Belgium
継続期間: 2000 9 132000 9 15

出版物シリーズ

名前Proceedings of the 25th International Conference on Noise and Vibration Engineering, ISMA

Conference

ConferenceProceedings of the 25th International Conference on Noise and Vibration Engineering, ISMA
国/地域Belgium
CityLeuven
Period00/9/1300/9/15

ASJC Scopus subject areas

  • 工学(全般)

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