A5030844920- Vibration and Dynamic Analysis
- Icing and De-icing Technologies
- Fluid Dynamics and Vibration Analysis
- Mechanical stress and fatigue analysis
- Aerodynamics and Fluid Dynamics Research
- Power Systems and Technologies
- Wind and Air Flow Studies
- Geotechnical Engineering and Underground Structures
Chongqing University
2020-2022
By means of numerical models for torsional behavior bundle conductors under distributed torque, parameter study various structural parameters, including conductor type, number, spacing, span length, height difference, initial tension in sub-conductors, spacer number and arrangement spacers, is carried out. With the over twenty thousand numerically simulated samples a dataset set up. A surrogate model prediction lines constructed by BP neural network, which parameters are as input variables...
The 2D computational fluid dynamics (CFD) model of transmission conductor is set up to simulate the aerodynamic forces varying with time on conductor. Taking into account geometrical nonlinearity lines, finite element (FE) models single span and two-span lines discretized beam elements are established. By means FE models, aeolian vibrations excited by under different wind velocities numerically simulated. nonlinear resonant characteristics, amplitude-frequency relations during vibration...
The lift, drag and torsional moment coefficients, versus wind attack angle of iced quad bundle conductors in the cases different conductor structure, ice parameters are numerically simulated investigated. With Latin hypercube sampling numerical simulation, points designed datasets created. Set number sub-conductors, angle, spacing, accretion thickness, velocity diameter as input variables, a prediction model for coefficients is created, trained tested based on dataset extra-trees algorithm....
Refined three-dimensional (3D) finite-element (FE) models of typical aluminium conductor steel reinforced (ACSR) and formed (FACSR) with structural details to simulate their static dynamic characteristics are proposed. Taking into account the elastoplastic behaviour wires, tensile mechanical properties coupling between tension torsion two types conductors under loading numerically investigated. Furthermore, responses transmission lines, in which refined 3D segment equivalent beam used, after...
A numerical modeling method to investigate the torsional behavior of bundle conductors under distributed torque is presented. The applied by means a user-defined subroutine in ABAQUS finite element software. verified instability and self-restoring process quad twin tested other authors. By method, parameter study different parameters, including initial tension sub-conductors, unbalanced spacer clamping forms, arrangements, sub-conductor spacing carried out, effect electromagnetic force...