CRH5动车组关键动力学研究-车辆工程专业毕业论文.docx

The core technique of vehicle through few decade apply and modification,speed of vehicle today exceed to yesterday,the dynamic performance of train system not only affects the increase of speed,but also the fort and running only ensure vehicle don’t overturn and jump the track,but also ensure hi29h speed vehicle have good fort,high speed vehicle have some problem in practice developed great impel vehicle dynamics simulation,
finite element analysis,modal analysis and track analysis and SO make design
step in rational speed bogie suspension research,dynamics envelope research, suspension stay bearing research,dynamics performance analysis,wheeltrack research, driving motion and brake system study make high speed design have enrichment academic base.
High pare with low speed vehicle need even more to
plete mathematical model of multi—rigid body and multi·flexible body,dynamic behaviors caused by nonlinear factor in system have not been understood
cannot satisfy modern industrial dimensional system theory plex and reality system exist miscellaneous nonlinear factor,analysis have difficulty,SO solve those must break plex system to simple system,then we carl have method
open out nonlinear factor in system. The main research work involves:
Firstly,this paper considers mechanics of vehicle dynamics in theoretically.
Overviewed all OVer the world research about high-speed vehicle present state and perspective.
2. Aim at high speed vehicle suspension system,theory analysis make dynamics
simulation have academic base.
stay bearing research,analysis vehicle suspension set for validated the structure.
track research:different tread contact geometrical features analysis,dynamics
analysis of contact area
up drive and brake system academic modal and simulation reality work condition.
Second the paper concludes that system parameters,important factor