Browsing Volume 12, Issue 3 by Author "Kovalchuk, Yu"
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Use of the energy of parametric oscillations to improve drilling indices
Svitlytskyi, V; Ohorodnikov, P; Kovalchuk, Yu (National Mining University, 2018-09-30)Purpose. Increase of the efficiency of using energy of parametric oscillations within the assembly of drilling string bottom by means of solving nonlinear-parametric equations of a “bit – drive motor – drilled-out rock” ...