EFFECT OF DYNAMIC BALANCING ON 4-BAR LINKAGE VIBRATIONS

Investigated in this paper is the effect of dynamic balancing on four- bar linkage vibrations. To conduct this research, cubic spline functio ns are applied to model link deflections. After deriving the unconstra ined link dynamic equations, the natural orthogonal complement is used to assemble the constrained dynamical equations of a dynamically bala nced four-bar linkage. Then simulations are performed, the results ind icating that the dominant factor on the vibrations of a dynamically ba lanced four-bar linkage may be the moment of inertia of the counterwei ght attached to the input link, because the larger the said moment of inertia, the more severe the vibrations undergone by the dynamically b alanced four-bar linkage. (C) 1997 Elsevier Science Ltd.