Ultimate strength assessment of hull structural plates with general corrosion based on fractal theory

被引：12
|
作者：
Zhang Qi [1 ]
Yang Hongqi [1 ]
Zeng Huan [1 ]
Liu Kaixuan [1 ]
Huang Yi [1 ]
机构：
[1] Dalian Univ Technol, Sch Naval Architecture, Dalian 116024, Peoples R China
来源：
OCEAN ENGINEERING | 2022年 / 245卷
基金：
中国国家自然科学基金;
关键词：
Nonuniformity of the corrosion; Fractal; Ultimate strength; Hull plates; STEEL PLATES; DAMNIFICATION;
D O I：
10.1016/j.oceaneng.2021.110417
中图分类号：
U6 [水路运输]; P75 [海洋工程];
学科分类号：
0814 ; 081505 ; 0824 ; 082401 ;
摘要：
It is difficult to accurately evaluate the ultimate strength of hull plates due to the nonuniformity of general corrosion. The present study aims to introduce fractal theory to explore the influence of the nonuniformity of general corrosion on the ultimate strength reduction of hull plates. The monofractal characteristics and multi-fractal characteristics of the corroded plates constructed by fractional Brownian motion (FBM) are extracted. The fractal analysis of the corroded hull plate confirms the applicability of fractal theory in the evaluation of the irregularity of corrosion morphology. Finally, a series of nonlinear finite element analyses (FEAs) are carried out to establish the ultimate strength assessment formula with fractal parameters and the corroded volume loss.
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收藏
页数：10
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