本文基于有限元软件Abaqus，采用三维内聚力单元模拟蒙皮与芯层界面，建立静水压力载荷下复合材料夹层圆柱壳极限承载能力预报方法，数值计算与试验结果吻合较好，验证数值模型和计算方法的准确可行性。进而，研究了浮体/吸声混合芯材夹层复合材料圆柱壳芯层模量对承载特性的影响，并基于Isight与Abaqus集成运算，以提高临界失稳载荷为优化目标，对深水静压作用下的复合材料夹层圆柱壳表层缠绕方式进行优化设计，得到最优表层缠绕角度。研究结果对复合材料夹层圆柱壳的水下应用与研究有一定参考价值和指导作用。
Based on the finite element software Abaqus, this paper uses a three-dimensional cohesive element to simulate the interface between the skin and the core, and establishes a prediction method for the ultimate bearing capacity of a composite sandwich cylindrical shell under hydrostatic pressure. The numerical calculation and the experimental results are in good agreement. The numerical model and accurate feasibility of calculation method. Furthermore, the influence of the modulus of the cylindrical shell core layer of the floating body/sound-absorbing hybrid core material sandwich composite material on the load-bearing characteristics was studied. Based on the integrated calculation of Isight and Abaqus, the optimization goal is to improve the critical instability load, and the surface winding method of the composite sandwich cylindrical shell under deep water static pressure is optimized to obtain the optimal surface winding angle. The research results have certain reference value and guidance for the underwater application and research of composite sandwich cylindrical shells.
2022,44(7): 20-24 收稿日期：2021-08-05
DOI：10.3404/j.issn.1672-7649.2022.07.004
分类号：TB332
基金项目：国家部委基金资金资助项目（9140A14080914JB11044）
作者简介：陈悦(1989-),女,博士,讲师,研究方向为舰用复合材料及海防工程
参考文献：
[1] 王晓旭, 张典堂, 钱坤, 等. 深海纤维增强树脂复合材料圆柱耐压壳力学性能的研究进展[J], 复合材料学报, 2020, 37(1): 16–26.
[2] 罗珊, 李永胜, 王纬波. 非金属潜水器耐压壳发展概况及展望[J]. 中国舰船研究, 2020, 15(4): 9–18
[3] 李彬, 庞永杰, 程妍雪. 基于铺层参数的复合材料耐压壳协同优化设计[J]. 上海交通大学学报, 2017(3): 308–313
[4] 沈克纯, 潘光, 姜军, 等. 静水压力下纤维缠绕圆柱壳体的稳定性分析[J]. 西北工业大学学报, 2018, 36(5): 40–48
[5] LI Z M, QIAO P Z. Buckling and postbuckling of anisotropic laminated cylindrical shells under combined external pressure and axial compression in thermal environments[J]. Composite Structure, 2015, 119: 709–726
[6] 沈克纯, 潘光, 施瑶, 等. 静水压力下碳纤维缠绕复合材料圆柱壳体应变特性及承载能力研究[J]. 西北工业大学学报, 2020, 38(5): 937–942
[7] 柯仙送. 受压复合材料圆柱壳破坏的数值分析与试验研究[D]. 南京: 南京航空航天大学, 2017.
[8] 王林. 深海耐压结构型式及稳定性研究[D]. 武汉: 中国舰船研究院, 2011.
[9] LOPATIN A V, MOROZOV E V. Buckling of the composite sandwich cylindrical shell with clamped ends under uniform external pressure[J]. Composite Structures, 2015, 122(122): 209–216
[10] 陈悦, 朱子旭, 李永清, 等. 夹层复合材料耐压圆柱壳深水静压承载特性分析[J]. 海军工程大学学报, 2018, 30(2): 83–87
[11] 陈悦, 朱锡, 李华东, 等. 轴压作用下缠绕复合材料夹芯圆柱壳力学性能研究[J]. 玻璃钢/复合材料, 2016(7): 5–8
[12] 朱子旭, 李永清, 朱锡, 等. 夹芯复合材料圆柱壳在静水压力下的承载能力试验[J]. 海军工程大学学报, 2019, 31(3): 95–101
