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Citation:
　Yin Zhang,Shengxuan Wei,Bihui Pang,et al.Double Damage Identification of Fully Free Beams Based on Curvature Modes[J].Journal of Marine Science and Application,2026,(5):1238-1251.[doi:10.1007/s11804-025-00782-6]
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Double Damage Identification of Fully Free Beams Based on Curvature Modes

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Title:
Double Damage Identification of Fully Free Beams Based on Curvature Modes
Author(s):
Yin Zhang;  Shengxuan Wei;  Bihui Pang;  Haoyue Cheng;  Jun Guo
Affilations:
Author(s):
Yin Zhang;  Shengxuan Wei;  Bihui Pang;  Haoyue Cheng;  Jun Guo
College of Shipbuilding Engineering, Harbin Engineering University, Harbin 150001, China
Keywords:
Curvature mode; Hull damage; Double damage identification; Perturbation method; Modal test
分类号:
-
DOI:
10.1007/s11804-025-00782-6
Abstract:
Damage to the ship can threaten its overall strength, which in turn affects the structural safety of the hull and its subsequent use. Recognizing ongoing damage immediately and effectively is crucial. This paper examines a method based on curvature modes to identify ship damage. The effectiveness of this method is investigated when the ship experiences simultaneous and successive damage. The ship is simplified as a hull girder with free boundary conditions. Six different damage cases are analyzed through numerical simulations and experiments. Results show that the curvature mode index can effectively identify two separate damages when the ship is damaged in two locations simultaneously. Additionally, when the ship is subjected to continuous attacks, the curvature mode index can accurately detect new damage without being affected by existing damage. The proposed method offers a novel approach to double damage identification in hull girders, providing valuable insights for real-time ship safety assessment.

References:

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Memo

Memo:
Received date:2025-4-1;Accepted date:2025-6-16。<br>Corresponding author:Jun Guo,E-mail:17798993835@163.com
Last Update: 2026-11-04