Numerical Analysis of Translational Vibration Reduction Response on Drilling Process due to Additional Mass-Rubber Dynamic Vibration Absorber (MR-DVA)

Machining is an important part of the industry, one which drilling process. The process utilized in making holes a material. When drill-bit touches material, it causes vibration that can affect quality hole surface. Therefore, analysis addition MR-DVA with natural frequency 1,630.2 Hz on workpiece Aluminium Alloy 7075-T6 as main system conducted. Simulations were carried out range 1,675 – 1,680 various dimension ratios 2⁄5, 3⁄5, 4⁄5, and 5⁄5, along different placement between clamp 1⁄4, 2⁄4, 3⁄4. Based conducted simulation, has been found mass ratio 1⁄20 dampen well. largest reduction for 2⁄5 1⁄4 92%. In contrast, smallest 3⁄5 7.2%. These are because damping area increase workpiece's dimensions inverses, affecting clamp.