Damage Identification of Offshore Platform Based on D-S Evidence Theory

Abstract:

In order to improve the accuracy of damage identification of offshore platform, structural damage identification method based on D-S evidence theory is proposed. Firstly, the stiffness matrix damage factor iterative method and modal strain energy method are used to identify the structural damage, and give the decision vectors respectively. Then, the decision vectors are imported into the D-S evidence theory formula, the damage probability of every element would be obtained and the damage location would be determined finally. Offshore platform model experiments show that the results of structural damage identification are more accurate and reliable after D-S evidence theory is used.

• Periodical: Advanced Materials Research (Volumes 255-260)
• Pages: 314-318
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.255-260.314
• Online since: May 2011
• Authors: Yan Song Diao, Xian Neng Tong
• Keywords: D-S Evidence Theory, Offshore Platform, Structural Damage Identification

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