Abstract
Liquid sloshing in the tank of a tank truck is one of the important factors affecting the driving stability of the tank truck. When the external motivation is larger, the liquid sloshing phenomenon shows the nonlinear characteristics of the movement, causing rollover accidents. Therefore, it is of practical significance to study the movement of a tank car to improve its stability. Based on the equivalent pendulum mechanical model under nonlinear condition, the liquid sloshing nonlinear motion of a tank was investigated. A simulated liquid sloshing test bench was used to verify the validity of the nonlinear model. This study provides a theoretical basis to improve the driving stability of a tank truck.
Highlights
Because of the effect of liquid density and road axle weight restrictions, liquid sloshing in a partially filled tank is the main cause of the decrease in the driving stability of a tank truck
The results show that the test bench can better represent the liquid sloshing phenomenon in the tank; it is an effective method to validate the numerical model
The data curves of the nonlinear dynamic model and test bench are almost the same; most of the relative deviation is less than 10%
Summary
Because of the effect of liquid density and road axle weight restrictions, liquid sloshing in a partially filled tank is the main cause of the decrease in the driving stability of a tank truck. Using the general fluid analysis software FLUENT, the volume of fluid (VOF) method was used to define the free surface, establish a turbulence model, determine liquid sloshing by calculation, and obtain the nonlinear dynamic response of liquid sloshing during the driving of a tank truck.[15] In 1992, Sankar[16] considered the nonlinear characteristics of a liquid in an oval cross-section tank stated previously in the literature to explore the tank liquid sloshing theory using the linear theory, but the study was limited to a small vibration field.
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