Abstract

A previous study has reported the exposure of skidder operators to lateral vibration at levels exceeding those recommended by ISO standard 2631/1. This project was therefore undertaken to establish the feasibility of using a passive-suspension seat to reduce these vibrations. The simple physical model developed consists of four parameters whose optimization results in the minimization of lateral vibration measured in skidders.

The results of this study indicate that the lateral motion introduced by suspensions which adequately attenuate vibration renders safe operation of the vehicle difficult, and conversely, that vibration cannot be sufficiently attenuated if lateral motion is restricted. It is therefore concluded that the suspension design examined is inappropriate for use in the reduction of lateral vibration in skidders.