Research on Liquid Sloshing Dynamic Behavior of Hazardous Chemical Liquid Tank Truck on the Medium and Long Wave Undulating Roads
To study the impact of undulating road on driving stability of hazardous chemical liquid tank truck,the medium and long wave road models are constructed based on road roughness data.Taking a multi-axles liquid tank truck as the object,a vehicle dynamics model considering the tire deformation and suspension nonlinear characteristics is established.Equivalent mechanical models of the longitudinal and lateral sloshing of the liquid are established,which are coupled with the vehicle dynamics model.Kinetic parameters of the tank on different roads are obtained to excite the forced liquid sloshing model.The results show that the increase in the phase difference be-tween the two sides of the road has an adverse effect on the lateral stability of the truck.The frequency of liquid later-al sloshing decreases with the increase of road wavelength and increases with the rise of liquid filling ratio.When the distance between the tractor saddle and the axle of the semi-trailer is an integer multiple of the road wavelength,there is significant longitudinal liquid sloshing.The oblique wave deflector can suppress lateral liquid sloshing,but the suppression effect is poor when the liquid filling ratio is low under small sloshing conditions.When the truck passes through uneven roads with a low filling ratio,increasing the vehicle speed appropriately can reduce the liq-uid sloshing.While the filling ratio is high,excessive vehicle speed will lead to a significant increase in liquid slosh-ing amplitude and wall load,reducing the driving stability of the vehicle.
liquid tank truckroad excitationliquid sloshingequivalent mechanical modelmulti-body dynamics
万方数据
维普
