DYNAMIC ANALYSIS OF BRANCH SHAKING MACHINES VIA MULTI-DOF MODELING

Yılmaz S.

Eskişehir Osmangazi Üniversitesi mühendislik ve mimarlık fakültesi dergisi (online), cilt.34, sa.2, ss.2278-2289, 2026 (TRDizin)

Özet

In this study, the dynamic behavior of different types of branch shaking machinesequipped with slider–crank mechanisms were investigated through a comparativeapproach. The systems were considered within a common kinematic framework andrepresented using a reduced single-axis model with three degrees of freedom along thedominant direction of motion. This modeling approach enabled a consistent comparisonof different configurations while maintaining the essential dynamic characteristics of thesystem. Within this framework, the angular motion transmitted through the flexible shaftwas converted into linear oscillatory motion via the slider–crank mechanism, and systeminteractions were represented using equivalent mass–spring–damper–friction elements.Different equipment configurations were evaluated based on whether the engine wasexternally mounted or integrated, as well as the positioning of the slider–crankmechanism relative to the operator or the branch. Simulation results were analyzed interms of reaction forces transmitted to the user and displacement responses. The findingsindicate that flexible shaft systems provide lower force transmission and improved usercomfort, whereas configurations with the mechanism closer to the operator producehigher vibration amplitudes. Overall, the reduced modeling approach proved to be aneffective tool for the rapid and comparative evaluation of alternative designs.