Test Centrifuge Rotor Balancing Based on 3D Model

Abstract

The paper proposes an approach to solving a problem of balancing single-arm rotors of test centrifuges. The specificity of such balancing is determined, and associated with inconstancy of masses of tested items installed on the rotor, and with the effect of an unbalanced aerodynamic force. The scheme of an oscillating rotor with a movable, stationary and dynamic counterweight is considered. Static and dynamic balancing of rotors at different positions of the center of mass of the tested items was analyzed. Aerodynamic imbalance force was estimated and correlated with mechanical unbalance. An iterative algorithm based on 3D modeling of the rotor design is proposed, which reduces the complexity of analytical calculations when balancing a single-arm rotor.