Antiresonant Vibration Isolation in Vibratory Mills

Abstract

This paper presents a conceptual review of a novel configuration of vibratory mills based on a two-mass anti-resonant dynamic system. The proposed solution introduces an intermediate drive frame between the grinding chamber and the foundation, enabling redistribution and partial compensation of dynamic excitation forces generated by inertial vibrators. The operating principle is based on tuning system parameters to achieve an anti-resonance condition, which significantly reduces vibration transmission to the supporting structure compared to classical single-mass over-resonant vibratory mill designs.

A simplified mechanical model is used to illustrate the dynamic behavior of the system and to highlight key differences relative to conventional over-resonant configurations. The influence of stiffness and damping tuning on vibration and dynamic force reduction is discussed, along with possible chamber motion trajectories. The paper also outlines key engineering challenges associated with scale-up, synchronization of excitation systems, and sensitivity to variations in operating conditions.

The results suggest that anti-resonance-based vibratory mills may represent a promising direction for reducing dynamic loads in large-scale milling systems while maintaining effective grinding performance.