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Abstract

This paper investigates the parametric resonances of a stationary disc excited by a rotating frictional load and influenced by a series of mass-spring-damper systems with or without friction. The genetic algorithm is used to find out the right number of mass-spring-damper systems and their optimal positions in order to reduce and even eliminate the dynamic instability caused by the rotating friction as a follower force on the disc surface. It is found that, if these mass-spring-damper systems involve no or low friction, they can reduce or suppress the dynamic instability of friction-induced parametric resonances when correctly located, but they have, at best, no effect when the level of friction is high.

Keywords

disc parametric resonance dynamic instability stabilizer dry friction genetic algorithm

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Optimal suppression of parametric vibration in discs under rotating frictional loads

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