Research Article
Effect of Track Support Structures on Friction-Induced Vibrations of Wheelset-Track Systems
Table 2
Values of the main parameters of finite element models [
19].
| | Parameter | Value |
| | Leading wheelset | | Outer vertical suspension force (N) | 53,681 | | Inner vertical suspension force (N) | 49,164 | | Outer lateral suspension force (N) | 233 | | Inner lateral suspension force (N) | 204 | | Density of wheelset (kg/m3) | 7790 | | Young’s modulus of wheelset (N/m2) | 2.059 × 1011 | | Poisson’s ratio of wheelset | 0.3 | | Rail | | Length of rail (m) | 36 | | Sleeper spacing (m) | 0.625 | | Radius (m) | 350 | | Density of rail (kg/m3) | 7790 | | Young’s modulus of rail (N/m2) | 2.06 × 1011 | | Poisson’s ratio of rail | 0.3 | | Wheel-rail friction coefficient μ1 | 0.4 | | Track support structures | | Density of iron pads (kg/m3) | 7790 | | Young’s modulus of iron pads (N/m2) | 2.06 × 1011 | | Poisson’s ratio of iron pads | 0.3 | | Density of sleepers and slabs (kg/m3) | 2400 | | Young’s modulus of sleepers and slabs (N/m2) | 3.25 × 1010 | | Poisson’s ratio of sleepers and slabs | 0.24 | | Iron pad-sleeper friction coefficient | 0.75 | | Support stiffness from subgrade (MN/m) | 491 | | Support damping from subgrade (kNs/m) | 90 |
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