Prediction and computer simulation of dynamic thrust and torque in vibration drilling

A predictive model for dynamic thrust and torque in vibration drilling is presented. The model is based on the mechanics of vibration cutting analysis, assuming that the deformation process at the lips and chisel edge is treated as a number of vibration cutting elements, each with different dynamic characteristics. The result of a simulation study conducted for a low frequency range has shown a very good agreement between the theoretical predictions and the experimental evidence.