Analysis and Experimental Investigation of Vibration Characteristics of Rotary Platform of Hydraulic Excavator under Complex Working Conditions

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Order</td><td class="align_center">Frequency (Hz)</td><td class="align_center">Mode shape</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">1</td><td class="align_center">10.16</td><td class="align_center">Bending</td></tr><tr><td class="align_left">2</td><td class="align_center">15.31</td><td class="align_center">Torsion</td></tr><tr><td class="align_left">3</td><td class="align_center">16.23</td><td class="align_center">Torsion</td></tr><tr><td class="align_left">4</td><td class="align_center">26.06</td><td class="align_center">Bending</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Test results of the first four-order natural frequencies of the rotary platform.</div>

Shock and Vibration

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Table 2

Table 2: Analysis and Experimental Investigation of Vibration Characteristics of Rotary Platform of Hydraulic Excavator under Complex Working Conditions 

Table 2 | Analysis and Experimental Investigation of Vibration Characteristics of Rotary Platform of Hydraulic Excavator under Complex Working Conditions 