Simulation and optimization of steady rotation characteristics of middle axle trailer train

Abstract

In order to optimize the steady rotation characteristics of the van-type middle axle trailer train, an efficient optimization method is proposed based on the response surface methodology and genetic algorithm. Firstly, this paper established the mathematical equations and the steady rotary simulation movement model of the van-type middle axle trailer train, and using TruckSim to simulate in standard conditions, the correctness of the model was verified by comparing with the experimental results of steady rotation. Secondly, according to the established mathematical model, the structural parameters that affect the steady rotation characteristics are analyzed. Finally, the response surface model is applied to obtain the objective function of each parameter, and the parameters are optimized by genetic algorithm(GA). According to the simulation with optimized parameters, the results show that, the comprehensive score of the steady rotation test of the middle axle trailer train was increased by 21.7%, the lateral acceleration and yaw rate of the truck was reduced by 6.65% and 9.92% respectively, and the roll angle of tractor and trailer was reduced by 19.25% and 12.5% respectively.