A Dynamic Design Methodology for Large-Scale Complex Nonlinear Systems Based on Orthogonal Decomposition Technique

Figure 1

Influences of track parameters on the low-wear area of wheel-rail contact and detrimental wear evolution such as central hollow tread wear in Chinese HSR practices. (a) Two-point contact problem on the rail shoulder at one side of the gauge corner. (b) Comparison of three typical wheel-rail matching. (c) Two-point contact problem on rail top with stronger dynamic interaction. (d) Template model of a CRH5 bogie with an antirolling torsion bar device with dual bars per bogie. (e) Tracking measuring results on wheel wear when CRH5 trainset in 200 km/h running. (f) Wear characteristics of central hollow tread wear after CRH5 speeding up to 250 km/h on an HSR dedicated line. (g) Template model of an ICE3 motor bogie for high-speed rails. (h) Equivalent conicity curve contrast for wheel profile renewal design LMB-10 to rail CN60KG before or after grinding. (i) Tread wear comparison for wheel profile original and renewal designs.