Mathematical modeling for and simulation of optical fiber composite submarine cable strain measurement

LüAnqiang; Chen Yong; Yin Chengqun; Li Yongqian

doi:10.13756/j.gtxyj.2014.05.011

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Mathematical modeling for and simulation of optical fiber composite submarine cable strain measurement

- Mathematical modeling for and simulation of optical fiber composite submarine cable strain measurement
- Study on Optical communication Issue 5, Pages: 33-36(2014)
- 作者机构：
  
  华北电力大学电子与通信工程系
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2014.05.011
  CLC： P756.1
- Published：2014，
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[1]吕安强,陈永,尹成群,李永倩.光纤复合海底电缆应变测量的数学建模与仿真[J].光通信研究,2014(05):33-36.

LüAnqiang, Chen Yong, Yin Chengqun, et al. Mathematical modeling for and simulation of optical fiber composite submarine cable strain measurement. [J]. (5):33-36(2014)
[1]吕安强,陈永,尹成群,李永倩.光纤复合海底电缆应变测量的数学建模与仿真[J].光通信研究,2014(05):33-36. DOI： 10.13756/j.gtxyj.2014.05.011.

LüAnqiang, Chen Yong, Yin Chengqun, et al. Mathematical modeling for and simulation of optical fiber composite submarine cable strain measurement. [J]. (5):33-36(2014) DOI： 10.13756/j.gtxyj.2014.05.011.

摘要

为了获得光纤复合海底电缆的应变与光单元应变的关系

以便用分布式光纤传感技术准确测量海底电缆本体的应变分布。在分析海缆结构的基础上

进行了海缆与光单元应变关系的数学建模和仿真。通过合理简化海缆结构

建立了海缆的有限元模型

进行了直线拉伸数值计算

对比了数值计算结果和数学模型。结果表明

数值计算结果与数学模型一致

光单元应变与海缆应变满足线性关系

且小于海缆应变值

可以利用光单元应变推算海缆的应变

这为基于分布式光纤应变测量的海缆状态监测提供了理论依据。

Abstract

In order to identify the relationship between fiber unit strain and fiber composite submarine cable strain so as to accurately measure the submarine cable strain distribution by using the distributed optical fiber sensing technology

this paper conducts mathematical modeling for and simulation of the said relationship.It first establishes the mathematical model on the basis of analyzing the submarine cable structure and the finite element model by rationally simplifying the submarine cable structure.Then it conducts the linear stretching numerical calculation and compares the calculation results and mathematical model.The results show that the they are in agreement

in other work

the fiber unit strain is linear with the submarine cable strain and smaller than the latter

which means we can use fiber unit strain to calculate the submarine cable strain and provide a theoretical basis for monitoring the state of submarine cables on the basis of distributed optical fiber strain measurements.

关键词

光纤复合海底电缆数学建模绞合结构有限元仿真

Keywords

optical fiber composite submarine cablemathematical modelingtwisted structurefinite element simulation

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