Galloping characteristics of catenary positive feeder considering aerodynamic damping.
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| Title: | Galloping characteristics of catenary positive feeder considering aerodynamic damping. |
|---|---|
| Alternate Title: | 计及气动阻尼效应的接触网正馈线舞动特性. |
| Authors: | LI, Yanzhe1, JIN, Xianglong1, ZHAO, Shanpeng1 zsp@mail.lzjtu.cn, ZHANG, Youpeng1, WANG, Sihua1, LI, Wanrun2 |
| Source: | Journal of Measurement Science & Instrumentation. Mar2025, Vol. 16 Issue 1, p142-153. 12p. |
| Subjects: | Finite element method, Resonance effect, Wind pressure, Catenary, Nonlinear analysis, Aerodynamics of buildings |
| Abstract (English): | The purpose of this study is to analyze the galloping characteristics of the catenary positive feeder in fluctuating wind areas considering dynamic-wind angle of attack and aerodynamic damping. Firstly, the flow field model of the catenary positive feeder was established, the fluctuating wind field was simulated by Davenport wind power spectrum and linear filtering method, and the wind speed at inlet in calculation domain was controlled by editing the profile file to simulate and calculate the aerodynamic characteristics of the positive feeder in the fluctuating wind area. Then, taking the positive feeder as the research object, the mathematical model of actual structure and the corresponding finite element model were established. By applying the wind load to the finite element model, the influence of aerodynamic damping caused by the self-movement of the positive feeder on the galloping response was analyzed, and the frequency domain characteristics of galloping displacement of the positive feeder considering aerodynamic damping were studied. Finally, the calculation method of aerodynamic damping by the Guidelines for Electrical Transmission Line Structural Loading (ASCE No.74) was used for the galloping response of the positive feeder and compared with the proposed method. The results show that when considering aerodynamic damping, the galloping amplitude of the positive feeder decreases significantly, and the first-order resonance effect on the vertical displacement and horizontal displacement decreases significantly. The galloping trajectories calculated by the two methods are consistent. Therefore, this study is of great significance to further clarify the ice-free galloping mechanism of the catenary positive feeder in violent wind areas. [ABSTRACT FROM AUTHOR] |
| Abstract (Chinese): | 本研究分析脉动风场下计及动态风攻角与气动阻尼的接触网正馈线舞动特性。首先, 建立实际尺寸的接触网正馈线流场 模型, 利用 Davenport 风功率谱以及线性滤波法模拟脉动风场, 并通过编辑 Profile 文件控制计算域入口风速, 仿真计算脉动风场下 正馈线气动特性。其次, 建立接触网正馈线结构动力学数学模型与有限元模型, 并对正馈线有限元模型施加风荷载, 仿真分析正 馈线自身运动引起的气动阻尼对其舞动响应的影响, 研究计及气动阻尼的正馈线舞动位移的频域特性, 同时与 ASCE No. 74 中计 算气动阻尼方法进行对比。结果表明, 考虑气动阻尼效应时正馈线舞动幅值显著减小, 竖直位移与水平位移一阶共振效应明显减 弱, 两种方法计算所得舞动轨迹较吻合。本研究对于进一步明确大风区接触网正馈线无覆冰舞动机制具有重要的意义。 [ABSTRACT FROM AUTHOR] |
| Copyright of Journal of Measurement Science & Instrumentation is the property of Journal of Measurement Science & Instrumentation and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
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| Items | – Name: Title Label: Title Group: Ti Data: Galloping characteristics of catenary positive feeder considering aerodynamic damping. – Name: TitleAlt Label: Alternate Title Group: TiAlt Data: 计及气动阻尼效应的接触网正馈线舞动特性. – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22LI%2C+Yanzhe%22">LI, Yanzhe</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22JIN%2C+Xianglong%22">JIN, Xianglong</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22ZHAO%2C+Shanpeng%22">ZHAO, Shanpeng</searchLink><relatesTo>1</relatesTo><i> zsp@mail.lzjtu.cn</i><br /><searchLink fieldCode="AR" term="%22ZHANG%2C+Youpeng%22">ZHANG, Youpeng</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22WANG%2C+Sihua%22">WANG, Sihua</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22LI%2C+Wanrun%22">LI, Wanrun</searchLink><relatesTo>2</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Journal+of+Measurement+Science+%26+Instrumentation%22">Journal of Measurement Science & Instrumentation</searchLink>. Mar2025, Vol. 16 Issue 1, p142-153. 12p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Finite+element+method%22">Finite element method</searchLink><br /><searchLink fieldCode="DE" term="%22Resonance+effect%22">Resonance effect</searchLink><br /><searchLink fieldCode="DE" term="%22Wind+pressure%22">Wind pressure</searchLink><br /><searchLink fieldCode="DE" term="%22Catenary%22">Catenary</searchLink><br /><searchLink fieldCode="DE" term="%22Nonlinear+analysis%22">Nonlinear analysis</searchLink><br /><searchLink fieldCode="DE" term="%22Aerodynamics+of+buildings%22">Aerodynamics of buildings</searchLink> – Name: Abstract Label: Abstract (English) Group: Ab Data: The purpose of this study is to analyze the galloping characteristics of the catenary positive feeder in fluctuating wind areas considering dynamic-wind angle of attack and aerodynamic damping. Firstly, the flow field model of the catenary positive feeder was established, the fluctuating wind field was simulated by Davenport wind power spectrum and linear filtering method, and the wind speed at inlet in calculation domain was controlled by editing the profile file to simulate and calculate the aerodynamic characteristics of the positive feeder in the fluctuating wind area. Then, taking the positive feeder as the research object, the mathematical model of actual structure and the corresponding finite element model were established. By applying the wind load to the finite element model, the influence of aerodynamic damping caused by the self-movement of the positive feeder on the galloping response was analyzed, and the frequency domain characteristics of galloping displacement of the positive feeder considering aerodynamic damping were studied. Finally, the calculation method of aerodynamic damping by the Guidelines for Electrical Transmission Line Structural Loading (ASCE No.74) was used for the galloping response of the positive feeder and compared with the proposed method. The results show that when considering aerodynamic damping, the galloping amplitude of the positive feeder decreases significantly, and the first-order resonance effect on the vertical displacement and horizontal displacement decreases significantly. The galloping trajectories calculated by the two methods are consistent. Therefore, this study is of great significance to further clarify the ice-free galloping mechanism of the catenary positive feeder in violent wind areas. [ABSTRACT FROM AUTHOR] – Name: Abstract Label: Abstract (Chinese) Group: Ab Data: 本研究分析脉动风场下计及动态风攻角与气动阻尼的接触网正馈线舞动特性。首先, 建立实际尺寸的接触网正馈线流场 模型, 利用 Davenport 风功率谱以及线性滤波法模拟脉动风场, 并通过编辑 Profile 文件控制计算域入口风速, 仿真计算脉动风场下 正馈线气动特性。其次, 建立接触网正馈线结构动力学数学模型与有限元模型, 并对正馈线有限元模型施加风荷载, 仿真分析正 馈线自身运动引起的气动阻尼对其舞动响应的影响, 研究计及气动阻尼的正馈线舞动位移的频域特性, 同时与 ASCE No. 74 中计 算气动阻尼方法进行对比。结果表明, 考虑气动阻尼效应时正馈线舞动幅值显著减小, 竖直位移与水平位移一阶共振效应明显减 弱, 两种方法计算所得舞动轨迹较吻合。本研究对于进一步明确大风区接触网正馈线无覆冰舞动机制具有重要的意义。 [ABSTRACT FROM AUTHOR] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Journal of Measurement Science & Instrumentation is the property of Journal of Measurement Science & Instrumentation and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
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| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.62756/jmsi.1674-8042.2025014 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 12 StartPage: 142 Subjects: – SubjectFull: Finite element method Type: general – SubjectFull: Resonance effect Type: general – SubjectFull: Wind pressure Type: general – SubjectFull: Catenary Type: general – SubjectFull: Nonlinear analysis Type: general – SubjectFull: Aerodynamics of buildings Type: general Titles: – TitleFull: Galloping characteristics of catenary positive feeder considering aerodynamic damping. Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: LI, Yanzhe – PersonEntity: Name: NameFull: JIN, Xianglong – PersonEntity: Name: NameFull: ZHAO, Shanpeng – PersonEntity: Name: NameFull: ZHANG, Youpeng – PersonEntity: Name: NameFull: WANG, Sihua – PersonEntity: Name: NameFull: LI, Wanrun IsPartOfRelationships: – BibEntity: Dates: – D: 01 M: 03 Text: Mar2025 Type: published Y: 2025 Identifiers: – Type: issn-print Value: 16748042 Numbering: – Type: volume Value: 16 – Type: issue Value: 1 Titles: – TitleFull: Journal of Measurement Science & Instrumentation Type: main |
| ResultId | 1 |
