ANALYTICAL APPROACH TO SUBSPAN OSCILLATIONS OF BUNDLED CONDUCTORS

Citation
G. Kern et al., ANALYTICAL APPROACH TO SUBSPAN OSCILLATIONS OF BUNDLED CONDUCTORS, Zeitschrift fur angewandte Mathematik und Mechanik, 76, 1996, pp. 573-574
Citations number
7
Categorie Soggetti
Mathematics,"Mathematical Method, Physical Science",Mechanics,Mathematics
ISSN journal
00442267
Volume
76
Year of publication
1996
Supplement
2
Pages
573 - 574
Database
ISI
SICI code
0044-2267(1996)76:<573:AATSOO>2.0.ZU;2-#
Abstract
Under certain conditions, i.e. wind velocity and surrounding terrain, twin bundled conductors or quadruple bundles of overhead transmission fines are aerodynamically unstable. This instabilities are due to the leeward conductor lying in the wake of the windward one. Using quasi-s teady linear flutter theory, [3,5,6], we predict flutter boundaries su ch as flutter regions of the leeward conductor and critical flutter ve locities. As the linear model is incapable of predicting the character istics of the resulting limit-cycle, a nonlinear model is used to inve stigate the post-bifurcational behaviour by the aid of the two time sc ale method.