Dynamic Analysis of Percussion Drilling System under Harmonic Impact

<table class="table-group" id="tab7"><tr><td><table class="table"><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr class="thead"><td class="align_left">Parameters</td><td class="align_center">Density (t/mm<sup>3</sup>)</td><td class="align_center">Elastic modulus (MPa)</td><td class="align_center">Poisson’s ratio</td><td class="align_center">Yield strength (MPa)</td><td class="align_center">Friction angle</td><td class="align_center">Fracture strain</td></tr><tr><td class="thead-hr" colspan="7"><hr/></td></tr><tr><td class="align_left">Values</td><td class="align_center">2.75 × 10<sup>−9</sup></td><td class="align_center">51500</td><td class="align_center">0.33</td><td class="align_center">120</td><td class="align_center">30.16</td><td class="align_center">0.075</td></tr><tr class="table-tr"><td colspan="7"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Characteristics parameters of limestone.</div>

Shock and Vibration

tab7

Table 7

Table 7: Dynamic Analysis of Percussion Drilling System under Harmonic Impact 