Results 181 to 190 of about 9,515,851 (235)

Galloping Characteristics of Conductor Accreted with Crescent-Shaped Ice

Applied Mechanics and Materials, 2012
Accounting for the disastrous phenomena of ice-accreted conductor galloping, wind tunnel tests of LGJ630/45 conductor accreted with crescent-shaped ice are conducted. Based on the test results, conductor galloping is simulated by employing the PCL language of ANSYS commercial software package and then the influences of span lengths as well as free ...
Hui Xue Dang, Feng Li Yang, Xin Min Li, Jing Bo Yang   +3 more
openaire   +1 more source

A new approach for determining the onset velocity of galloping instability taking into account the nonlinearity of the aerodynamic damping characteristic

Journal of Wind Engineering and Industrial Aerodynamics, 1997
Claudia Ziller, H. Ruscheweyh
exaly   +2 more sources

Investigation into galloping characteristics of iced quad bundle conductors

Journal of Vibration and Control, 2014
A nonlinear finite element method for galloping of iced bundle conductor transmission lines is presented. Wind tunnel tests for galloping of quad bundle conductor segments with crescent-shaped and sector-shaped ice models were carried out, and validity of the finite element method is demonstrated by the consistency of the galloping responses ...
Bo Yan, Xiaohui Liu, Xin Lv, Linshu Zhou
openaire   +1 more source

Dynamics of a circular cylinder with an attached splitter plate in laminar flow: A transition from vortex-induced vibration to galloping

, 2020
Flow-induced vibration (FIV) of a circular cylinder with an attached splitter plate in a laminar flow with Re = 100 is studied numerically. First, the mechanical model along with mathematical formulations is proposed to describe the fluid-structure ...
Xu Sun, C. Suh, Z. Ye, Bo Yu
semanticscholar   +1 more source

Magnetically enhanced quasi-zero-stiffness galloping harvester for efficient wind energy harvesting and autonomous sensing

Applied Physics Letters
This study presents an enhanced quasi-zero-stiffness galloping-based piezoelectric energy harvester (EQZS-GPEH) for efficient wind energy harvesting and self-powered wind speed sensing.
Ye Zhang, Yawei Wang, Yaozi Zheng, Chunbo Lan, Guobiao Hu   +4 more
semanticscholar   +1 more source

Aerodynamic force characteristics and galloping analysis of iced bundled conductors

Wind and Structures, 2014
Aerodynamic characteristics of crescent and D-shape bundled conductors were measured by high frequency force balance technique in the wind tunnel. The drag and lift coefficients of each sub-conductor and the whole bundled conductors were presented under various attack angles of wind. The galloping possibility of bundled conductors is discussed based on
Wenjuan Lou, Jiang Lv, M.F. Huang, Lun Yang, Dong Yan   +4 more
openaire   +1 more source

Effects of urging by the rider on gallop stride characteristics of quarter horses

Journal of Equine Veterinary Science, 1988
Summary The effects of urging by the rider on the limb contact patterns of the gallop stride were documented using high-speed cinematography. The subjects were 4 Quarter Horse fillies, approximately 30 months old, that were raised, housed, fed and trained alike.
N.R. Deuel, L.M. Lawrence
openaire   +1 more source

The different types of vortex-induced vibration and galloping interference and distinguish them through forced motion

The Physics of Fluids
This study investigates the interference mechanism between vortex-induced vibration (VIV) and galloping at low mass ratios through numerical simulations of three prismatic sections at a Reynolds number of 200.
Zhaolie Tang, Wenting Zhou, Zhiyang Zhang   +2 more
semanticscholar   +1 more source

Phi-OTDR Based On-Line Monitoring of Overhead Power Transmission Line

Journal of Lightwave Technology, 2021
The overhead power transmission line, as an important component of equipment for long-distance power transmission, is threatened by icing and galloping, which will lead to equipment troubles and cause huge economic loss.
Zhewen Ding, Xuping Zhang, Ning-Mu Zou, Fei Xiong, Jinzhu Song, X. Fang, Feng Wang, Yi-Xin Zhang   +7 more
semanticscholar   +1 more source

Detection technology for inertial behavior of three degree of freedom wire galloping

2024 6th International Conference on Energy, Power and Grid (ICEPG)
Due to the influence of various factors such as weather on wire galloping, when designing a three degree of freedom wire galloping inertial behavior detection technology, there is often a problem of low detection accuracy caused by inaccurate analysis of
R. Jia, Jie Yang, Chao Zhou, Hui Liu
semanticscholar   +1 more source