固有振動数の変化に基づくき裂を有する曲がりはりのき裂同定

• 堀辺 忠志

  茨城大学工学部

書誌事項

タイトル別名

• Crack Identification of Curved Beam Using Frequency Change
• コユウ シンドウスウ ノ ヘンカ ニ モトヅク キレツ オ ユウスル マガリハリ ノ キレツ ドウテイ

抄録

In this paper a crack identification method for curved beams is presented using both genetic algorithm (GA) and FEM. The crack is simulated by an equivalent rotational spring model. On the basis of this approximate model, the stiffness matrices of a cracked element are derived employing the curved beam theory. In order to calculate the natural frequencies of the curved beam, which are required to identify of the crack location and the depth from frequency measurements, FEM program including the cracked element is developed. The depth and the position of the crack in the curved beam are estimated by using these natural frequencies and GA. The proposed method is verified by numerical simulation of some sample problems.

収録刊行物

• 日本機械学会論文集Ａ編

  日本機械学会論文集Ａ編 70 (695), 978-985, 2004

  一般社団法人 日本機械学会

キーワード

• Curved Beam
• Crack
• Identification
• Finite Element Method
• Genetic Algorithm
• Natural Frequency
• Response Surface Methodology

詳細情報

• CRID: 1390282679454353280
• NII論文ID: 110004998788
• NII書誌ID: AN0018742X
• DOI: 10.1299/kikaia.70.978
• ISSN: 18848338
• ISSN: 03875008
• NDL書誌ID: 7045677
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7045677
• Web Site: http://www.jstage.jst.go.jp/article/kikaia1979/70/695/70_695_978/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可