Numerical analysis of wave propagation and vibration of overhead transmission cable
Palavras-chave:
Overhead transmission cable; Flexural wave propagation; Wave Finite Element; Spectral transfer matrix; Spectral element method.Resumo
This paper presents a comparison of numerical methods used to model and analyse the vibration of
overhead transmission line conductor. The cable vibration signature is expressed through the frequency response
function (FRF) and the flexural wave propagation via dispersion diagram. The cable is modelled under the numerical
background of the finite element, spectral element, spectral transfer matrix, and wave finite element methods.
Efficacy, accuracy and computational effort to estimate the FRF and dispersion diagram results demonstrate the
advantage and limitation of each technique. It is recommended to analyse the vibrations of the systems in different
configurations of initial and boundary conditions because some initial condition likewise tensile force, changes the
dynamic response and the type of waves. The numerical analysis investigates the natural frequency, mode shape and
flexural waves estimated from the four methods for different tensile force and boundary condition.
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