A5036483443- Vibration and Dynamic Analysis
- Icing and De-icing Technologies
- Fluid Dynamics and Vibration Analysis
- Thermal Analysis in Power Transmission
- Graphene research and applications
- Innovative Energy Harvesting Technologies
- Mechanical Behavior of Composites
- Islanding Detection in Power Systems
- Wireless Power Transfer Systems
- Fiber-reinforced polymer composites
- Power Systems Fault Detection
- Energy Harvesting in Wireless Networks
Commercial Aircraft Corporation of China (China)
2024
Taiyuan University of Technology
2021-2024
Tianjin University
2018-2021
In this study, the coupled ordinary differential equations for galloping of first two modes in iced bundled conductors, including in-plane, out-of-plane, and torsional directions, are derived. Furthermore, through numerical analysis, critical conditions modal determined range wind speed–sag parameters, patterns variation laws different parameter spaces analyzed. The space is then divided into five regions according to modes. Under multimodal coupling mechanism galloping, impact single kinds...
This study aims to conduct galloping experiments using a full aeroelastic model investigate the controlling effects of interphase spacers with different kinds arrangements on three-phase iced eight-bundled transmission lines. A low-speed wind tunnel was designed and built assess compact lines single span. The similarity conditions between prototype were determined by theory proposed modification method. Four common considered. Compared situation without spacers, composite amplitude reduction...
Abstract The theoretical results indicate that iced bundled conductors experience spatial galloping due to wind-induced vibration, involving in-plane, out-of-plane, and torsional movements. To better understand the dynamic response of this behavior from an experimental perspective, innovative method has been proposed. can simultaneously measure vibration signals conductors’ galloping. A testing system was established, is applied in experiment continuous conductors, validating some results....
An improved shear-lag model is adopted in this paper to study the fiber pull-out by considering interface properties a representative volume element (RVE). The surface roughness, represented grooves distributed around fiber, introduced analyze influence of roughness on comparing it with round fiber. groove shapes also discussed. interfacial stiffness cohesive zone modeling simulate practical connection. To represent residual stress composites, pressure load added RVE its pull-out. results...
A dynamic model of a galloping transmission line able to describe for the coupling its longitudinal, in-plane, out-of-plane and torsional vibrations is established. It also considers effects geometrical nonlinearity aerodynamic nonlinearity. By static configuration, reduced obtained. Then, equations motion are obtained through Galerkin method. contains two components. numerical calculation, maximum amplitudes at wind speeds drawn behavior with thin ice accretions analyzed. The results show...
Galloping of an iced transmission line subjected to a moderating airflow has been analysed in this study, and new form galloping is discovered both theoretically experimentally. The partial differential equations the are established based on Hamilton theory. Galerkin method then applied continuous model, discrete model derived along with its first two in‐plane torsional modes. A trapezoidal wind field built through superposition simple harmonic waves. vibrational amplitude generally observed...
The mooring cable system in plane motion can be modeled as two coupled partial differential equations, which numerical solved by finite difference method directly. scheme is analyzed, and parameters selection for time-marching of displacement velocity are deduced. stability condition the analyzed through Fourier series method, range match stable given. Then, verified a example.