Modeling And Dynamic Simulation Of Large Sliding Amusement Device

These years, large slide of amusement equipment，with its breathtaking, stimulating andinteresting features, has enjoyed increasing popularity with the tourists in almost all the themeparks in China. For the roller coaster, which is crowned as the “King of EntertainmentMachine”, its manufacturing level also reflects that of the enterprise. How to make the coasterboth safe and bring visitors stimulating feelings? This question puts forward higherrequirement to the design personnel. Firstly, it is to adopt the advanced design methods andscientific design concept, and secondly, it is to improve manufacturing technology, ensuringthe precision of the processing requirements.By employing virtual prototype technology, this paper has finished the track modelingand adjustment of the roller coaster.The modeling of the tracks can be finished quickly byfitting for the rail benchmark curve first, and then obtaining the coordinates of the two tracks’key points through the space coordinate conversion process in MATLAB, and finally cubicspline fitting for these points. This method can establish the track model quickly andaccurately, and can ensure that the modeling accuracy meets the engineering need. In all kindsof transportation of a roller coaster’s operation, the modeling in the vertical ring is the mostdifficult one, because to build orbital model here, the problem of track geometry singularitywill appear. This gimbal lock problem at the vertical ring can be solved by Spherical andQuadrangle theory, and thus the track form in the ring has been fixed.In order to help the engineering and technical personnel have a better application of trackmodeling algorithm, a track modeling software for roller coaster, in which track adjustmentfunction was integrated, was designed and developed through the mixing programming ofMATLAB and VB. Track adjustment includes three aspects of content: the sleeper angle,track spacing and benchmark curve. The local adjustment on the tracks can improve theoperation of the roller coaster, and can realize the feedback-adjustment in orbit modeling.This paper, taking the production of the motor roller coaster in a domestic company as anexample, has analyzed the dynamic characteristics in gliding amusement equipment. Throughestablishing3d model of a roller coaster body in SolidWorks, then importing it into ADAMS,adding proper restraint and load, making dynamic simulation according to the actual working condition of the roller coaster, speed, acceleration, constraining anti-forces and other relateddata curves have been obtained.The compared results between the simulation data and the measured data in the test ofmotor roller coaster have proved the modeling and simulation method discussed in this paperis feasible. The related data curve obtained through the dynamic simulation can provide thebasis for structure strength analysis of roller coaster. The simulation analysis method of rollercoaster, which is one kind of gliding amusement equipment, has a great ability ofpopularization and can provide reference for the design of other sliding amusementequipments.