Transient Analysis and Design Improvement of a Gas Turbine Rotor Based on Thermal-Mechanical Method

<table class="fixed-width table-group" id="tab4"><tr><td><table class="table"><colgroup><col style="width:6.85em"/><col style="width:7.96em"/><col style="width:7.96em"/><col style="width:7.96em"/></colgroup><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr class="thead"><td class="align_center" colspan="2"> </td><td class="align_center">Tie rod hole of rear shaft</td><td class="align_center">Turbine tie rod</td></tr><tr><td class="thead-hr" colspan="4"><hr/></td></tr><tr><td class="align_left" rowspan="2">Maximum equivalent stress/MPa</td><td class="align_center">Before design improvement</td><td class="align_center">1009</td><td class="align_center">1287</td></tr><tr><td class="align_center">After design improvement</td><td class="align_center">761</td><td class="align_center">1088</td></tr><tr><td class="align_center" colspan="2">Decrease ratio/%</td><td class="align_center">25</td><td class="align_center">15</td></tr><tr class="table-tr"><td colspan="4"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>The decrease ratio of maximum equivalent stress after design improvement.</div>

Shock and Vibration

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Table 4

Table 4: Transient Analysis and Design Improvement of a Gas Turbine Rotor Based on Thermal-Mechanical Method 