Multi-scale analysis of ultimate bearing capacity in composite hull joints: failure mechanism and numerical simulation

被引:0
作者
Qiu, Yu [1 ,2 ]
Yan, Renjun [1 ,2 ]
Huang, Jiwei [3 ]
Shen, Wei [1 ,2 ]
Li, Mengzhen [1 ,2 ]
Xu, Lin [1 ,2 ]
机构
[1] Wuhan Univ Technol, Key Lab High Performance Ship Technol, Minist Educ, Wuhan 430063, Peoples R China
[2] Wuhan Univ Technol, Sch Naval Architecture Ocean & Energy Power Engn, Wuhan 430063, Peoples R China
[3] Marine Design & Res Inst China, Shanghai, Peoples R China
基金
中国国家自然科学基金;
关键词
Sandwich composite material; full-scale ship joint; ultimate bearing capacity; multi-scale method; testing technology; STRENGTH PREDICTION; WOVEN COMPOSITES; DAMAGE; MODEL;
D O I
10.1080/17445302.2024.2401128
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
Progressive failure analysis method is the main method to analyse the ultimate bearing capacity and failure mode of composite structures. Multi-scale method can effectively reduce the dependence of damage mode and stiffness degradation analysis on material parameters. Based on the multi-scale method, from micro-scale to mesoscale and then to macro-scale, the equivalent modulus and equivalent strength of fibre bundles, single-layer laminates and multi-directional laminates were predicted respectively, and the prediction method of ultimate bearing capacity of large-scale composite structures from material level to structure level was constructed. The mechanical properties of standard composite materials and the ultimate bearing capacity of full-scale composite joints were tested respectively, and the ultimate bearing capacity and failure mode of L-joints were predicted by numerical method. The results show that the numerical simulation method based on multi-scale can accurately predict the ultimate bearing capacity and failure mode of large-scale joints of the hull.
引用
收藏
页数:18
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