Mechanical systems with flexible dynamics often suffer from vibration induced by changes in the reference command or from external disturbances. The technique of adding a vibration absorber has proven useful at eliminating vibrations from... more
Mechanical systems with flexible dynamics often suffer from vibration induced by changes in the reference command or from external disturbances. The technique of adding a vibration absorber has proven useful at eliminating vibrations from external disturbances and rotational imbalances. In this paper, the application of a Dynamic Vibration Absorber for suppression of chatter vibrations in the boring manufacturing process is presented. The boring bar is modelled as a cantilever Euler–Bernoulli beam and the DVA is composed of a mass and a spring and elements. After formulation of the problem, the optimum specifications of the absorber such as spring stiffness, absorber mass and its position are determined. The analog-simulated block diagram of the system is developed and the effects of various excitations such as step, ramp, etc. on the absorbed system are simulated. In addition, chatter stability is analysed in dominant modes of boring bar.
