Research Article
Dynamic Stress of Subgrade Bed Layers Subjected to Train Vehicles with Large Axle Loads
Table 3
Mechanical parameters of different parts of the FE model.
| | Part | E (MPa) | ν | ρ (kg/m3) | φ (°) | c (kPa) | D |
| | Train | Rigid body | — | — | — | — | — | | Rail | 2.1 × 105 | 0.25 | 7850 | — | — | — | | Sleeper | 30000 | 0.2 | 2500 | — | — | — | | Ballast | 200 | 0.25 | 2400 | — | — | 0.05 | | SBSL | 180 | 0.3 | 2300 | 33 | 58 | 0.1 | | SBBL | 150 | 0.3 | 2200 | 31 | 45 | 0.1 | | SBSB | 70 | 0.35 | 1800 | 17 | 30 | 0.15 | | Foundation | 50 | 0.35 | 1700 | 15 | 25 | 0.15 |
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