|
|
| |
| 温度效应对覆冰导线舞动特征的影响研究 |
| Influences of temperature on the galloping characteristics of iced conductor |
| 投稿时间：2021-07-09 修订日期：2021-08-26 |
| DOI： |
| 中文关键词: 温度效应 非线性舞动 模态 舞动特征 覆冰导线 |
| 英文关键词:temperature effect nonlinear galloping mode galloping characteristics iced conductor |
| 基金项目:基金国家自然科学基金(51308570, 51808085, 51507106)第一作者沈祺航(1997-),男,硕士研究生。E-mail：545402808@qq.com。研究方向柔性杆件结构动力学分析通讯作者刘小会(1981-),男,博士,副教授。E-mail：cqdxlxh@126.com。研究方向柔性杆件结构动力学分析 |
|
| 摘要点击次数: 217 |
| 全文下载次数: 0 |
| 中文摘要: |
| 以某耐张段单跨导线作为研究对象,基于哈密顿原理和增量热场理论,建立了考虑温度效应的覆冰导线非线性舞动模型并推导出其舞动方程。分别使用简单模态和复杂模态得到离散后的面内-面外耦合的有限维度舞动方程,接着采用多尺度法得到该方程的近似解。通过数值算例系统地研究了温度效应对覆冰导线舞动特性的影响,比较不同面内模态对覆冰导线位移响应的影响发现面内幅值差别十分明显。本文的研究成果对实际工程和防止覆冰输电线舞动具有一定的参考价值。 |
| 英文摘要: |
| The single span conductor of a tension section is taken as the research object, based on Hamiltonian principle and incremental thermal field theory, the galloping equations are derived, it considers the effect of temperature on ice-covered conductor. The discrete in-plane and out-plane coupled finite dimensional galloping equations are obtained by using simple and complex modes respectively, then the approximate solution of the equations are obtained by using the multi-scale method. The influence of temperature on the galloping characteristics of ice conductor are systematically studied by numerical examples, the effects of different modes on the displacement responses in the plane are compared and the in-plane amplitude differences are obvious. The research results of this paper have certain reference value for practical engineering and preventing galloping of iced conductor. |
| 查看/发表评论 下载PDF阅读器 |
