Research Article
Optimization and Performance Analysis of Rail-Train Coupling System with Inerters
Table 1
Parameters of the rail system.
| Symbol | Parameter | Unit | Nominal value |
| E | Elastic modulus of rail | N/m2 | 2.059 × 1011 | I | Rail cross-sectional inertia | m4 | 3.217 × 10−5 | mr | Rail mass per unit length | kg/m | 60.64 | ms | Sleeper mass (half) | kg | 125.5 | Kp | Rail pad stiffness | N/m | 1.0 × 108 | Cp | Rail pad damping | N·s/m | 7.5 × 104 | ls | Sleeper spacing | m | 0.545 | le | Effective support length of half sleeper | m | 0.95 | lb | Sleeper bottom width | m | 0.273 | | Ballast density | kg/m3 | 1.8 × 103 | Eb | Elastic modulus of ballast | N/m2 | 1.1 × 108 | Cb | Ballast damping | N·s/m | 5.88 × 104 | | Ballast shear stiffness | N/m | 7.84 × 107 | | Ballast shear damping | N·s/m | 8 × 104 | | Ballast stress distribution angle | (°) | 35 | hb | Ballast thickness | m | 0.35 | Ef | Subgrade K30 modulus | MPa/m | 1.9 × 108 | Cf | Subgrade damping | N·s/m | 1.0 × 105 |
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