Oscillations induced by a moving mass on a moderately sagged suspended cable are studied. A linear continuum model is formulated, and both a standard Galerkin technique and a perturbation method are used to tackle the problem. This appear in the form of a parametric excitation problem, where the excitation frequency is related to the velocity of the travelling mass. A preliminary analysis is performed aimed to detect all the existing parametric excitation conditions of the mass-cable system, potentially leading to instability phenomena in which single modes are involved, or several modes interact.
Perturbation and numerical analysis of suspended cables traveled by a single mass
PICCARDO, GIUSEPPE
2009-01-01
Abstract
Oscillations induced by a moving mass on a moderately sagged suspended cable are studied. A linear continuum model is formulated, and both a standard Galerkin technique and a perturbation method are used to tackle the problem. This appear in the form of a parametric excitation problem, where the excitation frequency is related to the velocity of the travelling mass. A preliminary analysis is performed aimed to detect all the existing parametric excitation conditions of the mass-cable system, potentially leading to instability phenomena in which single modes are involved, or several modes interact.
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