FRICTIONAL MODELING AND OPTIMIZATION FOR A VIBRATION MODAL ANALYSIS SIMULATOR DEVICE USING GENETIC ALGORITHM

The aim of this study is friction modeling and optimization of a “vibration modal analysis simulator”. This device has been used for observation and measurement of natural frequencies and mode shapes ofvibrating components and parts under the free or forced vibration conditions. In this paper to obtain linear vibrating motion with less measurement errors and optimum friction factor، the new prototype has been designed using the genetic algorithm. Mass linear motion is modeled by viscous friction agent so that optimized friction factor C with six sub-designation factors is calculated. Obtained results with respect to precursor’s availability، fabrication ability and from the economical point of view are more amenable and applicable than the preliminary devices and show a 70% reduction in friction factor.