Effects of structural and aerodynamic non-linearity and resonance component on gust response of overhead transmission lines

Abstract

This paper presents the effects of structural and aerodynamic non-linearity and resonance component on dynamic wind load and response on overhead wires under fluctuating winds. Time-history response analyses were performed using a finite element model of an overhead wire. Various approaches to modelling of the structure and the aerodynamic force were taken to evaluate the effects of structural and aerodynamic nonlinearity. In addition, the effect of the resonance component was evaluated through a comparison with the results of dynamic and quasi-static analyses.