Wheel-Rail Hertz Contact Stress Calculator
Compute normal contact patch dimensions ($a, b$), peak Hertzian contact stress ($p_0$), and subsurface shear stresses governing rolling contact fatigue (RCF).
Wheel & Rail Geometry
200 kN axle load = 100 kN/wheel
920 mm diameter wheel
60E1 rail crown ~ 300 mm
R260 / R350HT grade rail
Hertzian Contact Stress Results
Peak Contact Pressure (p_0)
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Mean Pressure (p_mean)
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2/3 of peak pressure
Contact Patch (a × b)
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Max Subsurface Shear (τ_max)
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Shakedown & Fatigue Assessment
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