单芯光纤复合海底电缆弯曲有限元建模

发布时间：2018-08-10 21:37

【摘要】：海底电缆的严重弯曲会导致漏电、接地、短路和断缆等事故。通过实体实验研究海底电缆的弯曲特性存在成本高、难度大,海底电缆各层结构数据不易获取等问题。为此,文中提出了单芯光纤复合海底电缆弯曲有限元建模实验方法。对海底电缆的结构进行了简化,建立了单芯海底电缆有限元模型,选用SOLID164和SHELL163单元,利用ALE算法,结合扫略和映射方法进行网格划分,对模型进行了求解,根据力学和结构特性对海底电缆进行了单端约束并施加转动惯量载荷,真实地模拟了海底电缆的弯曲过程。结果表明,模型沙漏能控制在内能的1%以内,海底电缆各层应力、应变数据符合弹塑性材料特性和工程经验,为海底电缆弯曲特性的研究和光纤传感技术的应用提供了参考。
[Abstract]:Severe bending of submarine cables can lead to leakage, grounding, short-circuit and cable breakage. It is difficult to study the bending characteristics of submarine cable by physical experiment, and it is difficult to obtain the structural data of each layer of submarine cable. In this paper, a finite element modeling method for single core fiber optic fiber composite submarine cable bending is presented. The structure of submarine cable is simplified, and the finite element model of single core submarine cable is established. The model is solved by using SOLID164 and SHELL163 elements, using ALE algorithm, combined with sweeping and mapping methods. According to the mechanical and structural characteristics, the single end constraint and the moment of inertia load are applied to the submarine cable, and the bending process of the submarine cable is simulated. The results show that the model hourglass energy is controlled within 1% of the internal energy, and the stress and strain data of each layer of submarine cable accord with the characteristics of elastic-plastic material and engineering experience, which provides a reference for the study of bending characteristics of submarine cable and the application of optical fiber sensing technology.
【作者单位】：国网浙江省电力公司舟山供电公司;浙江舟山海洋输电研究院有限公司;华北电力大学电子与通信工程系;
【基金】：浙江省电力公司项目(5211ZS14009M) 国家自然科学基金(51407074) 河北省自然科学基金(E2015502053)~~
【分类号】：P756.1

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