Vibration Character of Coil Spring with Link Mechanism

Abstract

An experimental study has been conducted on vibration character of a coil spring equipped with a link mechanism. This spring is that usually used for scales. The results show the asymmetry of the resonance curve in amplitude versus frequency, and the dependence of the resonance frequency on amplitude. As for the resonance curve, the bottom patern has a tendency to spread further on the higher frequency side than on the lower frequency one. This is not the case usually observed in other types of vibrators such as free suspended coil spring and cantilever vibrator etc. While, the resonance frequency is proved to be much dependent on the amplitude. These phenomena are considered to be attributed to the mechanical friction contained in the mechanical system.