为提高船用巴沙木芯钢—复合材料接头承载能力，采用有限元模拟对其进行性能优化。首先利用Abaqus软件中的VUMAT子程序构建了巴沙木材料失效准则，随后建立胶接巴沙木夹芯钢—复合材料连接接头的模型，经由计算结果同实验结果的对比来证实仿真的精准性。同时分析原始结构失效原因，并对其进行钢板末端改为完全延伸的形式和增加木芯转角的初步形状优化，接着通过ISIGHT软件集成实验设计（DOE）模块中的最优拉丁超立方算法进行设计采样，根据采样点构建响应面模型，最终将结构质量、极限承载力和刚度作为优化目标函数，基于NCGA遗传算法对巴沙木芯钢–复合材料接头开展了多目标优化。优化后的结构比初始方案的质量下降17.4%，极限承载力提高13.1%。
In order to improve the load-bearing capacity of marine balsa wood core steel-composite joints, finite element simulation was employed for optimizing their structure. First, the failure criterion of balsa wood was constructed by using the VUMAT subroutine in Abaqus software. Then, the model of the bonded balsa wood sandwich steel-composite joint was established. The precision of the numerical emulation was confirmed by comparing the calculated outcomes with the experimental ones. At the same time, the failure cause of the original structure was analyzed, and the steel plate end was changed into a fully extended form and the initial shape optimization was carried out to increase the Angle of the wood core. Then, the optimal Latin hypercube algorithm in the Experimental design (DOE) module integrated by ISIGHT software was used to design and sample, and the response surface model was built according to the sampling points. Finally, the multi-objective optimization of balsa wood core steel-composite joint was carried out with the mass, ultimate bearing capacity and stiffness as the optimization objective functions. The optimized results show that the mass is reduced by 17.4%, and the ultimate bearing capacity is increased by 13.1%.
2025,47(4): 33-39 收稿日期：2024-5-20
DOI：10.3404/j.issn.1672-7649.2025.04.006
分类号：U668.5
基金项目：国家自然科学基金资助项目（52271326）；海南省自然科学基金资助项目（623MS069）
作者简介：柴东廷(1998-),男,硕士研究生,研究方向为船舶与海洋工程结构安全与可靠性
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