Multi-objective optimization of the wave-proof plate layout of the liquid tank vehicle based on NSGA-II and RSM

Under the braking condition of the tanker, the liquid in the tank will have an impact on the tank body due to shaking. The arrangement spacing of the wave-proof plate has a great influence on the wave-proof effect. In order to study the optimal spacing of the wave-proof plate, a liquid sloshing model was established based on FLUENT, and the stress peak of the front head and the wave-proof plate 1 was determined as the optimization goal. The response model of the front head and the wave-proof plate 1 on the space of the three wave-proof plates was obtained through the response surface experiment, and the multi-objective optimization mathematical model of the wave-proof plate spacing was established based on RSM. The NSGA-II algorithm was used to solve the model, and the optimal combination of parameters of the spacing of the wave-proof plate was obtained. After optimization, the peak stresses of the front head and the first wave board are reduced by 8.6% and 5.2%.