海底光缆万米水深承压性能仿真  

Pressure-Bearing Performance Simulation of Submarine Optical Cables under 10000 m Water Depth

作　　者：李涛 范阳洋 骆军 孙旭 丁叶清 LI Tao;FAN Yangyang;LUO Jun;SUN Xu;DING Yeqing(Yangtze(Jiangsu)Marine Technology Company Limited,Yangzhou 225101,China)

机构地区：[1]长飞(江苏)海洋科技有限公司,扬州225101

出　　处：《电线电缆》2025年第4期17-23,共7页Wire & Cable

摘　　要：为评估海底光缆在万米水深下的承压性能,通过结构建模、材料参数建模,以及网格划分构建海底光缆三维模型。模拟静水压为20,40,60,80,100 MPa时海底光缆各组件的范式等效应力情况,揭示海底光缆万米水深承压机制和规律。仿真结果表明,海底光缆承压机制是逐渐形成两层承压壳体,第一层由外层细径钢丝和中径钢丝组成,第二层由粗径钢丝组成,将静水压力转移至磷化钢丝,减少了对中心不锈钢管的压力传导。100 MPa静水压下,海底光缆各组件的最大范式等效应力均不超过其屈服强度的83%,安全系数不小于1.2,能够满足万米水深的使用要求。In order to evaluate pressure-bearing performance of submarine optical cables under 10000 m water depth,a 3D model of submarine optical cables was constructed through structure modeling,material parameter modeling,and grid division.Pressure-bearing mechanism and law of submarine optical cables under 10000 m water depth were revealed by simulating von Mises stress of each submarine optical cable component when hydrostatic pressure was 20,40,60,80 MPa and 100 MPa.Simulation results showed that submarine optical cables had two layers of pressure bearing shell.The first layer was composed of outer thin and medium diameter steel wire,and the second layer was composed of thick diameter steel wire,which transferred hydrostatic pressure to steel wire and reduced pressure conduction to central stainless steel tube.The maximum von Mises stress of each submarine optical cable component did not exceed 83%of its yield strength,and safety factors were above 1.2 under hydrostatic pressure of 100 MPa,which could meet the requirements of 10000 m water depth.

关 键 词：海底光缆 万米水深静水压 仿真 承压机制 范式等效应力 

分 类 号：TM246[一般工业技术—材料科学与工程]