ملخص: This master is interested on the modelling of the drilling operation with defects. two groups of defects are taken into account in the dynamical model of the drilling operation: setting defects and geometrical defects. By using MATLAB platform, a numerical program was developed to simulate the influence of these defects on the dynamical behavior. Torsional vibrations are taken in to account within the general motion equation.
المراجع:: Master degree at Sfax engineering school (by Sofien Toumi)l