Dynamic Simulation on a Broken Test of Conductors

Dynamic simulation on the broken conductors for an experimental line section under different load cases was carried out. A finite element model of three span conductors was established in the general software ANSYS. The broken load case can be realized by the birth-death element method in ANSYS. The damping coefficients by the experimental identification were applied to the FEA model. Effect of the damping property of the conductors was considered by the Rayleigh damping method. Dynamic responses of the tensions of the conductors were obtained. Both the residual static tensions and the first peak tensions by the numerical simulations were well agreed with the experimental values. The impact effect is more significant for the location nearer to the broken point. The dynamic impact factors decrease with the increasing of the ice thickness, and the impact factors of conductors without accreted ice are much higher than those of conductors with accreted ice.