光通信研究, 2017 (4): 30, 网络出版: 2017-08-30  

波浪力作用下光纤复合海底电缆动力学有限元分析

Dynamic Finite Element Analysis of Fiber-Optic Composite Submarine Cable Under Wave
作者单位
华北电力大学 电子与通信工程系,河北 保定 071003
摘要
为了研究波浪力作用下海缆的动力学特性,建立了波浪力作用下海缆的三维有限元模型。首先利用SOLID185单元和pipe59单元建立了海缆模型,设置波浪力及海流速度;对该模型进行仿真计算,并对仿真结果进行数据提取,获得了海缆各层结构的位移、应力应变及光单元加速度等数据。通过对数据进行处理,得到波浪高0.1 m、周期为1 s、海流速为2 m/s的条件下,光单元振动频率约为50 Hz,为利用分布式光纤振动传感技术监测海缆的工作状态提供了理论参考。
Abstract
In order to study the dynamic characteristics of submarine cable under wave force, a three-dimensional finite element model of submarine cable under wave force is established. Firstly, the cable model is established by using SOLID185 element and pipe59 element. Then the wave force and current velocity are set up. The model is simulated and the simulation result is extracted. The displacement, stress and strain of the submarine layer structure and optical unit acceleration data are obtained. Through the data processing, under the conditions of wave height of 0.1 m, period of 1 s, and sea speed of 2 m / s, the vibration frequency of the optical unit is about 50 Hz, which provides a theoretical reference for monitoring the working state of submarine cable by distributed optical fiber vibration sensing technology.

冯雨珊, 尚秋峰, 吕安强. 波浪力作用下光纤复合海底电缆动力学有限元分析[J]. 光通信研究, 2017, 43(4): 30. FENG Yu-shan, SHANG Qiu-feng, Lü An-qiang. Dynamic Finite Element Analysis of Fiber-Optic Composite Submarine Cable Under Wave[J]. Study On Optical Communications, 2017, 43(4): 30.

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