Influence of the Dry Friction Suspension System Characteristics on the Stick-Slip of Vertical Vibration of a Three-Piece Bogie

<table class="table-group" id="tab1"><tr><td><table class="table"><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr class="thead"><td class="align_left">Parameter</td><td class="align_center">Specification</td></tr><tr><td class="thead-hr" colspan="2"><hr/></td></tr><tr><td class="align_left">Mass of each wedge</td><td class="align_center">0.17 kg</td></tr><tr><td class="align_left">Mass of bolster</td><td class="align_center">0.7 kg</td></tr><tr><td class="align_left">Effective stiffness of each wedge group of springs</td><td class="align_center">2550.6 N/m</td></tr><tr><td class="align_left">Effective stiffness of each bolster group of springs</td><td class="align_center">5101.2 N/m</td></tr><tr><td class="align_left">Wedge angle</td><td class="align_center">37.5°</td></tr><tr><td class="align_left">Side frame angle</td><td class="align_center">4°</td></tr><tr><td class="align_left">Friction coefficient at all sliding interfaces</td><td class="align_center">0.29</td></tr><tr><td class="align_left">Offset of wedge springs (precompression)</td><td class="align_center">−3.46 mm</td></tr><tr><td class="align_left">Offset of bolster springs (pretension)</td><td class="align_center">3.04 mm</td></tr><tr class="table-tr"><td colspan="2"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Specification of the suspension model.</div>

Shock and Vibration

tab1

Table 1

Table 1: Influence of the Dry Friction Suspension System Characteristics on the Stick-Slip of Vertical Vibration of a Three-Piece Bogie 