Vibration Analysis of Rotary Drill Rig and Modification Using Absorber Technique

Abstract

Rotary drill rig being an essential tool in construction engineering, reducing its vibration became necessary due to avoiding any kind of fracture or failure. With the depth of hole getting increased, the vibration becomes so intense that it not only affect the machine but also causes harm to the existing construction of its surrounding. To find its solution, many absorber technologies have been introduced. In this study, a simple prototype of an actual drill rig has been created to observe and compare the vibration of a drill rig with and without an absorber. This study has been implemented adding a simple mass spring as an absorber with the protype to see what properties of the mass spring can reduce the vibration in a significant amount. At the end, a suitable liquid damper is suggested with the stiffness of 2331000 N/m which is a silicon and rubber damper. An Ansys based simulation has been run in our study which shows how this damper is able to reduce the bending vibration to a significant amount.