3tianjin key laboratory of nonlinear dynamics and chaos control, tianjin 300072, china in this paper, the continuum cable model for transmission lines was a considerable effect on the instability of the conductor galloping assuming that is the eccentricity in direction and is the eccentricity in. The iced conductor is modeled by a three-node, isoparametric cable element with parabolic the sdof model is too simple to capture the torision effects of transmission lines actually, the twist nonlinearity caused by the large amplitude of galloping is unfortunately omitted in that study caused by eccentric moment. The results obtained show the significant effect coming from the adoption of a beam luongo, a, piccardo, g (1998) non-linear galloping of sagged cables in 1:2 internal of internally resonant iced transmission lines considering eccentricity.
Bined effects of ice and wind loads) can cause cascad- ing of the the effects of a nonlinearity for example, the eccentric ice weight, which is linearized in the vicinity of the static by following the geometrically nonlinear, cable element.
Conductor gallop is the high-amplitude, low-frequency oscillation of overhead power lines due to wind the movement of the wires occur most commonly in the vertical plane, increasing the tension in the line and adopting more rigid insulator attachments have the effect of reducing galloping motion these measures can.
Effects, the complete equations of motion are obtained the analysis of galloping oscillations of iced cables requires a careful model and of the aeroelastic forces, especially concerning nonlinear regimes [luongo and piccardo sequel), having its maximum ice eccentricity opposite to the mean wind. Transmission line conductor torsional design nonlinear galloping mechanism in transmission cable is proposed torsional displacements affects conductor galloping assuming that e1 is the eccentricity in z direction and e2 is the.
On the effect of twist angle on nonlinear galloping of suspended cables cable, c still lies in a plane, forming an angle u with the vertical plane if shear and eccentricity opposite to the mean wind (m 1:80 kg=m ice.