Abstract: In order to reduce the damage caused by the collision of tank trucks, the finite element models of passenger car and tank truck were established by the Hyper Mesh software. The LS-DYNA was introduced and the crash simulation model of two vehicles was established, and the deformation of tank structure in the process of car collision was calculated. The effects of different impact loads and liquid properties on the stress distribution, displacement, and damage deformation of the tank were analyzed. The validity of the model was verified and the tanker loading gasoline was taken as an example to carry out the calculation and analysis. The results show that the deformation of the tank increases with the increasing initial impact velocity under the same contact displacement, that at the same collision velocity, the deformation displacement is positively correlated with the contact displacement, that when the liquid-filling ratio is 0.9, the critical collision velocity of tank failure is 43 km/h, and that by using the simulation model, the liquid leakage rate and leakage amount after the failure of the tank can be obtained.

Key words: simulation model, finite element analysis, tank truck, rear-end collision, liquid leakage