Structure Optimization of Rib Drill Pipe Based on Gas-Solid Coupling and Orthogonal Experiment

<table class="table-group" id="tab4"><tr><td><table class="table"><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_left"></td><td class="align_center" colspan="3">Factors</td></tr><tr class="thead"><td class="align_left">Level</td><td class="align_center">A pitch (mm)</td><td class="align_center">B blade height (mm)</td><td class="align_center">C blade width (mm)</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">80</td><td class="align_center">3</td><td class="align_center">15</td></tr><tr><td class="align_left">2</td><td class="align_center">90</td><td class="align_center">5</td><td class="align_center">18</td></tr><tr><td class="align_left">3</td><td class="align_center">100</td><td class="align_center">7</td><td class="align_center">21</td></tr><tr><td class="align_left">4</td><td class="align_center">110</td><td class="align_center">9</td><td class="align_center">21</td></tr><tr><td class="align_left">5</td><td class="align_center">120</td><td class="align_center">11</td><td class="align_center">27</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Shock and Vibration

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Table 4

Table 4: Structure Optimization of Rib Drill Pipe Based on Gas-Solid Coupling and Orthogonal Experiment 