拖挂载荷下复合材料水下防护结构损伤分析  

Research on Damage of Fiber Composite Underwater Protective Structure under Dragging Load

作　　者：石锦坤 郑仁杰 刘晓彬 陈第一 屈衍 王召 SHI Jin-kun;ZHENG Ren-jie;LIU Xiao-bin;CHEN Di-yi;QU Yan;WANG Zhao(CNOOC Offshore Engineering Solutions Co.Ltd.,Shenzhen Guangdong 518000,China;Shenyang Offshore Technology(Shenzhen)Co.Ltd.,Shenzhen Guangdong 518000,China;Beijing FRP Institute Tengzhou Composite Materials Co.Ltd.,Tengzhou Shandong 277599,China;School of Marine Science and Engineering,South China University of Technology,Gangzhou 511436,China;Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen Guangdong 518055,China)

机构地区：[1]中海油深圳海洋工程技术服务有限公司,广东深圳518000 [2]深洋海工技术(深圳)有限公司,广东深圳518000 [3]北玻院(滕州)复合材料有限公司,山东滕州277599 [4]华南理工大学海洋科学与工程学院,广州511436 [5]南方科技大学海洋科学与工程系,广东深圳518055

出　　处：《船海工程》2024年第5期38-43,共6页Ship & Ocean Engineering

基　　金：工信部1500米级水下采油树及控制系统研制项目;深圳市2020年第一批技术攻关重点项目(重2020N014)。

摘　　要：通过对水下防护结构的材料开展海水劣化和材性试验,证明玻璃纤维和乙烯基酯树脂组成的复合材料在海水浸泡后仍具有很高的强度。根据海底管道终端的功能需求对水下防护罩展开结构设计和铺层设计。并基于Larc05损伤准则,借助ABAQUS对所设计的水下防护罩展开拖挂载荷下的损伤分析和研究。分别对有无帽型加强筋的两种防护罩上的4个不同拖挂位置进行加载、计算和分析,发现结构最容易发生的是基体损伤。无帽型加强筋的防护罩在位置3和4相对位置1和2更容易出现损伤。有帽型加强筋的防护罩相对无帽型防护罩,在位置2处的承载力下降了29.6%,发生纤维断裂损伤,剩余位置处承载力都有所提升。The seawater degradation and material property tests were carried out on the materials of underwater protective structures,and it was proved that the composite material composed of glass fiber and vinyl ester resin can ensure the bearing capacity and stability of the structure after immersion in seawater.Based on the Larc05 damage criterion,damage analysis and research were conducted on underwater protective structures under drag loads,and finite element analysis was conducted on different positions and structures of protective covers.It was found that matrix damage is the most common type of damage,and positions 3 and 4 of the protective cover without cap beam reinforcement are more prone to damage than positions 1 and 2.For protective covers with cap beam reinforcement,the bearing capacity of position 2 under fiber splitting damage mode decreased by 29.6%,while the rest of the bearing capacity increased.

关 键 词：水下防护结构 玻璃纤维复合材料 结构设计 Larc05准则 损伤预测 

分 类 号：P754[天文地球—海洋科学]