一种基于有限元仿真的低应力光纤环设计方法

By constructing an accurate geometric model of the skipped turns and performing nonlinear finite element simulation, the fiber optic ring design was optimized, solving the simulation deviation problem in the skipped turn transition region of the fiber optic ring. This resulted in higher design accuracy and reliability, reduced the risk of stress concentration, and improved the stability and lifespan of the fiber optic ring.

CN122113535BActive Publication Date: 2026-07-17BEIJING RATE ELECTROMECHANICAL TECH CO LTD +1

Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
BEIJING RATE ELECTROMECHANICAL TECH CO LTD
Filing Date
2026-04-29
Publication Date
2026-07-17

AI Technical Summary

Technical Problem

The existing simulation model of the skip-turn transition region of the octet symmetric fiber ring lacks accurate geometric characterization, and the meshing and load application are unreasonable, resulting in large deviations between the simulation results and the actual working conditions. Furthermore, it does not fully consider the nonlinear mechanical behavior of the fiber, and the design reliability is insufficient.

Method used

A precise geometric model of the skipped turns was constructed. Structured mesh generation and nonlinear finite element algorithm were used, combined with the nonlinear elastic parameters of the optical fiber, to simulate the deformation process of the optical fiber, optimize the skipped turn path and parameter settings, and reduce stress concentration.

Benefits of technology

It improves simulation accuracy and reliability, reduces the risk of stress concentration in fiber optic rings, and enhances the stability and service life of fiber optic rings, meeting the needs of practical engineering applications.

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Abstract

本发明公开了一种基于有限元仿真的低应力光纤环设计方法,属于计算机辅助设计技术领域。本发明的低应力光纤环设计方法针对八极对称绕法光纤环的跳匝过渡区,构建包含跨层跳匝光纤与规则层绕光纤的跳匝几何模型;建立局部笛卡尔坐标系并采用扫掠方法进行结构化网格划分;对规则层绕光纤施加固定约束,对跨层跳匝光纤施加张力及相向位移载荷以模拟跳匝变形;考虑光纤非线性力学行为,采用非线性有限元算法求解等效应力分布;基于等效应力分布拟合获得最优过渡路径,并调整跳匝角度、包裹缓冲材料。本发明能够真实还原跳匝场景下的局部应力状态,有效降低跳匝过渡区的应力集中,提升光纤环的设计可靠性与机械稳定性。
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