VIBRATION CHARACTERISTIC CHANGES IN DAMAGED STRUCTURE WITH REDUCTION OF CROSS-SECTION

Authors

  • Anh Tuan Le Le Quy Don Technical University, Hanoi, Vietnam
  • Trung Duc Tran Le Quy Don Technical University, Hanoi, Vietnam
  • Dinh Huong Vu Le Quy Don Technical University, Hanoi, Vietnam
  • Cong Nghi Nguyen Le Quy Don Technical University, Hanoi, Vietnam

DOI:

https://doi.org/10.56651/lqdtu.jst.v5.n02.543.sce

Keywords:

Natural frequency, mode shape, structural damage, reduction of the cross-section

Abstract

This article presents the study of the change in natural vibration frequency, which is determined with measured acceleration data of the structure when there is a weak reduction in a cross-section. Conducting a simulation with the initial structure and damaged structure has been evaluated the change of natural frequency and mode shape. The results can be used as the basic identification of the location and damage level of the structure. Because of reducing cross-section in different structural positions, the specific vibration form will appear suddenly at different positions. Hence, the level and location of damage can be determined based on the changing of the specific vibration pattern.

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Published

2023-01-18

Issue

Section

Articles