三芯海底电缆中光纤与缆体应变关系的有限元分析方法

张杰; 尹成群

张杰,尹成群.三芯海底电缆中光纤与缆体应变关系的有限元分析方法[J].电测与仪表,2016,53(14):.
Zhang Jie,Yin Chengqun.Finite Element Analysis Method for Strain Relationship BetweenCable Body and Optical Fiber in Three-core Optical Fiber Composite Submarine Power Cable[J].Electrical Measurement & Instrumentation,2016,53(14):.

三芯海底电缆中光纤与缆体应变关系的有限元分析方法

Finite Element Analysis Method for Strain Relationship BetweenCable Body and Optical Fiber in Three-core Optical Fiber Composite Submarine Power Cable

DOI：

中文关键词: 三芯光纤复合海底电缆拉伸应力应变有限元

英文关键词:three-core optical fiber composite submarine cable stretch stress strain finite element

基金项目:河北省自然科学基金资助项目(E2015502053)；国家自然科学基金资助项目(51407074)；中央高校基本科研业务费专项资金资助项目(2015ZD21)。

作者中文名	作者英文名	单位
张杰	Zhang Jie	华北电力大学电子与通信工程系
尹成群	Yin Chengqun	华北电力大学电子与通信工程系

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中文摘要:

为了利用分布式光纤应变传感技术测量的光纤应变反映三芯光纤复合海底电缆的缆体应变,本文通过有限元方法进行了建模、求解和分析。通过合并导体屏蔽、绝缘屏蔽、半导体阻水层、填充层,忽略黄铜带、铠装垫层、外被层,对模型进行了简化；选用SOLID164单元对模型进行了动力学分析；施加匀速载荷对海缆进行了拉伸仿真试验。利用最小二乘法对铜导体、XLPE、铅护套、钢丝铠装与光单元的应变进行了拟合,获得了它们的函数关系式。模型求解结果满足弹塑性材料特性,可为研究海底电缆的力学性能、判断海底电缆工作状态提供了参考。

英文摘要:

In order to make use of the distributed optical fiber strain sensing technology to measure the strain of the three core fiber composite submarine cable, the finite element method is used for modeling, solving and analyzing. The conductor screen, insulation screen, semiconductor resist layer and filling layer are merged to insulation layer. The model ignores the brass band, armored cushion, coating. The model is used to analyze the dynamics of the model by using the SOLID164 element. The uniform load is applied to the tensile simulation test . The strain of the copper conductor, XLPE, lead alloy, steel armor and optical unit is fitted by using the least square method. Their functions are obtained. The results of the model can meet the characteristics of elastic and plastic materials. It provides reference for mechanical properties research and operating condition judging of submarine power cable.

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