Analysis of Honeycomb Structure for Vibration Damping of Integrated Water Tanks

This paper provides an in-depth discussion of the vibration and noise problems of integrated water tanks in new energy vehicles, which are directly related to the safety and ride comfort of the vehicle. In order to deeply understand the vibration mechanism of the water tank and evaluate the damping effect of different structures, this paper determines the frequency response excitation source of the water tank through experiments, and simulates the finite element model of the water tank using software. Through finite element analysis and modal analysis, the paper studied the vibration characteristics of the water tank in detail and compared the effect of different structures on the vibration-damping effect. This paper focuses on analyzing the effects of honeycomb structure size parameters (height, wall thickness, and side length) on the vibration of the water tank. The results show that there are modal differences between the tank with coolant and the cavity tank, and these differences lead to changes in the modal vibration pattern of the whole tank. Harmonic response analysis revealed that the displacement of the right wall was as high as [Formula: see text][Formula: see text]mm and the vibration acceleration reached 0.37[Formula: see text]m/s 2 , both of which were the maximum values observed. Therefore, the right wall surface was identified as the critical region for vibration optimization. The honeycomb structure has more prominent advantages in vibration damping. Univariate analysis of the honeycomb structure concluded that an increase in the honeycomb height significantly increased the structural stiffness and effectively reduced the amplitude of vibration, with the damping effect particularly pronounced when the height exceeded 8[Formula: see text]mm.