Estimation of frequency response function on rotational degrees of freedom of structures

Naoki Hosoya, Takuya Yoshimura

研究成果: Conference contribution

抄録

In conventional vibration testing, measurement of frequency response function (FRF) has been limited to translational degrees of freedom (DOF). Rotational DOFs have not been treated in experimental analysis. However, the rotational DOF is indispensable in further analysis, such as substructure synthesis, prediction of structural dynamics modification, etc. Hence, measurement of FRFs on rotational DOF is essential for expanding applicability of experimental modal analysis. This paper proposes a new method for FRF estimation on rotational DOF of structures. The following is the estimation procedure: A rigid block is fixed on the measurement point of the structure; the block is excited by conventional impact hammer; the inner force and the response of the connection point including rotational DOFs are estimated; and lastly, the FRF including rotational DOF at the connection point of the structure is obtained. The feasibility of the method is investigated experimentally by applying it to a beam structure.

本文言語English
ホスト出版物のタイトルInternational Symposium on Motion and Vibration Control
出版社American Society of Mechanical Engineers (ASME)
ページ169-174
ページ数6
ISBN(電子版)9780791819760
DOI
出版ステータスPublished - 1999
外部発表はい
イベントASME 1999 Design Engineering Technical Conferences, DETC 1999 - Las Vegas, United States
継続期間: 1999 9月 121999 9月 16

出版物シリーズ

名前Proceedings of the ASME Design Engineering Technical Conference
6

Conference

ConferenceASME 1999 Design Engineering Technical Conferences, DETC 1999
国/地域United States
CityLas Vegas
Period99/9/1299/9/16

ASJC Scopus subject areas

  • 機械工学
  • コンピュータ グラフィックスおよびコンピュータ支援設計
  • コンピュータ サイエンスの応用
  • モデリングとシミュレーション

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