过山车虚拟样机的建模与动态仿真分析

研究基于虚拟样机技术的过山车动力学仿真分析。解决了虚拟样机建模的关键技术问题，例如，过山车轨道和车辆建模、车辆与轨道间的约束，施加摩擦力、根据测控信号自动施加车辆制动力等，建立了过山车系统虚拟样机。利用ADAMS软件对过山车虚拟样机进行动力学仿真分析，研究了运行过程中车辆位置、速度、加速度和受力的变化情况，获得了过山车的各种动态性能，为过山车设计和性能评价提供了一种新手段。

Modeling and Dynamic Analysis of Roller Coaster Using Virtual Prototype

The dynamic characteristic is one of important factors that influence the performances of large-scale roller coasters.This paper deals with analysing dynamic performance of roller coasters by using virtual prototype.The main techniques of modeling a virtual prototype were presented,e.g.model of railway and vehicles,constraints between railway and vehicles,adding frictions,applying the autocontrold brade etc.A virtual prototype of roller coaster was constructed and simulated by using ADAMS software.The location,velocity,acceleration of the vehicles and forces of the roller coaster during moving were analyzed and the dynamic performances were obtained.This provides a new means for the design and the perfomance estimation of roller coasters.