| 结冰分裂导线舞动的气动扭转刚度判据 |
| |
| 引用本文： | 樊社新,朱江新,莫以为.结冰分裂导线舞动的气动扭转刚度判据[J].工程力学,2012(11):381-384. |
| |
| 作者姓名： | 樊社新 朱江新 莫以为 |
| |
| 作者单位： | 广西大学机械工程学院 |
| |
| 基金项目： | 国家自然科学基金项目(5037706,10872053);广西自然科学基金项目(2011GXNSFA018131);广西大学211工程第三期创新项目(L300246);广西大学科研基金项目(XBZ100167) |
| |
| 摘 要： | 针对结冰分裂导线舞动问题,基于工程实际提出了以相线相碰作为结冰分裂导线舞动判据。从动力学方程组导出了此判据的表达式,由此表达式得到的结论是:气动力的耦合可能使得结冰分裂导线的气动扭转刚度很小,进而导致结冰分裂导线舞动。此结论与以往舞动理论不同的是:舞动不等同于动力失稳,即使结冰分裂导线处于动力稳定状态,仍可能发生舞动。此判据的特点是:表达式简单、力学意义明显,揭示了气动力的耦合在结冰分裂导线舞动中的作用。
|
| 关 键 词： | 舞动 结冰分裂导线 气动扭转刚度 气动力 失稳 |
GALLOPING CRITERION OF ICED BUNDLED CONDUCTORS FROM AERODYNAMICAL TORSIONAL RIGIDITYA |
| |
| FAN She-xin,ZHU Jiang-xin,MO Yi-wei.GALLOPING CRITERION OF ICED BUNDLED CONDUCTORS FROM AERODYNAMICAL TORSIONAL RIGIDITYA[J].Engineering Mechanics,2012(11):381-384. |
| |
| Authors: | FAN She-xin ZHU Jiang-xin MO Yi-wei |
| |
| Affiliation: | (Mechanical College,Guangxi University,Nanning 530004,China) |
| |
| Abstract: | For galloping of iced bundled conductors,the touching of phase lines is taken as the criterion in engineering practice.The criterion equation was derived from dynamical equations,indicating that coupling of aero dynamical forces may result in extremely small aero dynamical torsional rigidity of iced bundled conductors,which causes the galloping of iced bundled conductors.The difference between the conclusion and existing galloping theory is that galloping is not dynamical unstability and galloping of iced bundled conductors may occur under steady dynamical condition. |
| |
| Keywords: | galloping iced bundled conductors aero dynamical torsional rigidity aero dynamical force unstability |
| 本文献已被 CNKI 等数据库收录！ |
