Optimal Parameters Selection and Engineering Implementation of Dynamic Vibration Absorber Attached to Boring Bar

Dynamic analysis of damping boring bar with dynamic vibration absorber(DVA) is conducted in this paper. To minimize the vibration amplitude of the boring bar, the calculation method of DVA's optimal parameters (target stiffness(TS) and target damping(TD) ) is obtained. In order to achieve the desired TS, the rigid flexible coupling model of the rubber ring is built. By using Abaqus/standard, the rubber ring's changing process and the relationship between the radial stiffness and the axial compression is obtained, which shows that when the axial compression increases, the radial stiffness increases non-linearly. In order to achieve the desired TD, the nonlinear fluid model of the silicone oil is built. By using Abaqus/CFD, the relationship between the damping coefficient and the silicone oil pressure is obtained, which shows that with the increase of the silicone oil pressure the damping coefficient increases non-linearly.