Structural optimization and dynamic characteristics of high-speed variable gauge bogie
A track irregularity simulation method based on improved triangular series method based on wavelet theory was proposed.Combined with the established 7-rigid-body 42 degrees of freedom vehicle dynamics model and wheel-rail contact model,a dynamic simulation model of variable gauge train was built based on SIMPACK.The suspension parameters and wheel tread were optimized by parameter experiment,and the dynamic performance of the modified gauge bogie was predicted,the critical speed of the vehicle is far higher than the design requirements of 400 km/h,stationarity index reach the standard of secondary vehicle stability level,curve through sexual evaluation indexes is lower than the safety limit,developed by variable gauge bogie train has good dynamic performance.
railway transportationvariable gauge bogievehicle dynamicsstructural designtrack irregularitywavelet theory
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维普
