A Novel Analytical Method to Calculate Wheel-Rail Tangential Forces and Validation on a Scaled Roller-Rig

<table class="fixed-width table-group" id="tab7"><tr><td><table class="table"><colgroup><col style="width:5.21em"/><col style="width:11.28em"/><col style="width:8.79em"/></colgroup><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td class="align_left">Method</td><td class="align_center">Number of rejected steps</td><td class="align_center">Wall clock time <svg height="11.439pt" id="M85" style="vertical-align:-2.15067pt" version="1.1" viewbox="-0.0498162 -9.28833 4.60146 11.439" width="4.60146pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M290 -163V-135C183 -126 181 -122 181 -44V583C181 662 184 666 290 675V703H120V-163H290Z" id="g113-92"></path></g></svg>s<svg height="11.439pt" id="M86" style="vertical-align:-2.15067pt" version="1.1" viewbox="-0.0498162 -9.28833 4.60146 11.439" width="4.60146pt" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><g transform="matrix(.013,0,0,-0.013,0,0)"><path d="M226 -163V703H56V676C162 667 165 662 165 584V-43C165 -122 162 -126 56 -136V-163H226Z" id="g113-94"></path></g></svg></td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td class="align_left">FASTSIM</td><td class="align_center">888</td><td class="align_center">102.38</td></tr><tr><td class="align_left">Polach</td><td class="align_center">1047</td><td class="align_center">69.45</td></tr><tr><td class="align_left">Proposed</td><td class="align_center">630</td><td class="align_center">60.08</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

<div>Comparison of calculation time and number of rejected steps considering a simulation of 250 s.</div>

Advances in Tribology

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Table 7

Table 7: A Novel Analytical Method to Calculate Wheel-Rail Tangential Forces and Validation on a Scaled Roller-Rig 