Optimization method of suspension parameters for articulated vehicle based on ride comfort and road-friendliness

In order to investigate the influence of articulated vehicle's suspension system on ride comfort and road-friendliness and reasonably choose suspension parameters,a 7D dynamics model of 4-axle articulated vehicle was established.Taking the vertical acceleration of tractor and the dynamic load of every axle as object functions,a multi-objective optimization method of articulated vehicle's suspension parameters was put forward based on unified objective function method.After the optimization,tractor's vertical acceleration decreases by 21.43% and the maximal dynamic load of tractor's rear tire decreases by 17.72%.It is shown that using reasonable suspension parameters not only improves vehicle's ride comfort,but also reduces the dynamic load of truck acting on the road.3 tabs,5 figs,14 refs.