Abstract
Wake -induced oscillations on bundled conductors of overhead transmission
lines are investigated. These oscillations are due to the leeward conductor lying
in the wake of the windward one. We consider a twin horizontal bundle of overhead
lines. First of all, the critical wind velocity (bifurcation point) of incipient flutter is
identified 2,3. A nonlinear analysis is adopted to investigate the post-bifurcational
behaviour of the oscillations. Using, if necessary a reduction to the center manifold, and
an additional normal form transformation we obtain amplitude equations which can be
analyzed qualitatively with regard to the unfolding parameters.
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