Simulation of finding the optimized gravel radius of the arrester bed on truck escape ramp

2018 6th International Conference on Mechanical Engineering, Materials Science and Civil Engineering

材料科学;机械制造;土木建筑工程

Qin, Pin-Pin^1 ; Guang-Yi, Qin^1 ; Ji-Qiang, Mo^1 ; Da, Wu^1

Mechanical Engineering of Guangxi University, Nanning, China^1

关键词: Full scale tests;    Particle flow code;    simulation;    Simulation model;    Stopping distance;    Two-dimension;    Vehicle speed;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/542/1/012019/pdf
DOI  :  10.1088/1757-899X/542/1/012019

来源: IOP

【 摘 要 】

Propose a simulation method of finding the optimized gravel radius of the arrester bed on truck escape ramp in order to obtain the shortest stopping distance of runaway vehicle. A simulation model between gravel and tire is generated and calibrated by PFC2D (Particle Flow Code in two-dimensions) respectively. Utilize the model to simulate the relationship between radius and stopping distance at varied slopes and initial vehicle speeds. Simulation shows that whatever the slopes and the speeds are, the shortest stopping distance corresponds to gravel radius range is between 8.3mm and 15.7mm, that average radius is 12mm. The average radius is basically consistent with the ideal gravel radius 12.7mm, which indicates that the method is effective and could be a substitute for the full-scale test.