汽车动力学手册(UM).pdf

UNIVERSAL MECHANISM Simulation of Road Vehicle Dynamics User’s manual 2010 Universal mechanism Chapter 12. Simulation of road vehicles 2 12. UM MODULE FOR SIMULATION OF ROAD VEHICLES ............................................................. 4 information ........................................................................................................ 4 system of coordinates .............................................................................................. 5 macro and micro profiles ..................................................................................... 5 . Track macro geometry ......................................................................................................................... 5 . Micro profile (irregularities) ................................................................................................................ 7 . Library of irregularity files ........................................................................................................... 8 . Generation of irregularity files ................................................................................................... 10 . Wizard of irregularities ......................................................................................................... 10 . Generation of irregularities by power spectral density function (PSD) .................................... 11 . Models of roughness generated by PSD: ISO 8608, Wong, Dixon, experiment, track ............. 12 . ISO 8608 ....................................................................................................................... 13 . Wong ............................................................................................................................. 15 . Dixon ...........................................................