동특성 변화를 이용하여 보의 다중 균열 위치 및 크기 해석

Kim, Jung Ho;Lee, Jung Woo;Lee, Jung Youn

  • 투고 : 2015.07.16
  • 심사 : 2015.10.21
  • 발행 : 2015.11.20


This study proposed the method of the multi-crack detection using the sensitivity coefficient matrix which is calculated from the change of eigenvalues and eigenvectors before and after the crack. Each crack is modeled by a rotational springs. The method is applied to the cantilever beam with miulti-crack. The eigenvalues and eigenvectors are determined for different crack locations and depths. The prediction of multi-crack detection are in good agreement with the results of structural reanalysis.


강성 행렬;감도계수 행렬;유한요소법;동특성;다중 균열 탐지


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연구 과제 주관 기관 : 경기대학교 대학원