Abstract
To research the influence of liquid sloshing on the driving stability of high-clearance sprayers, this paper builds an equivalent liquid sloshing mechanical model and obtains the stochastic acceleration excitation of the rectangular spray tank using the Adams kinetic model, thus obtaining the relationship between the impact force, moment, and the stochastic acceleration using Fluent numerical simulation analysis. This paper makes further calculations with MATLAB/Simulink system models, and the result from comparing these two calculations shows that the equivalent strategy proposed in this paper has a better consistency. Based on the consideration of the acting forces of the additional moment due to lateral movement of the center of mass of the liquid and the dynamic pressure due to liquid sloshing in the tank, this paper builds a mathematical model of the sprayer and researches the influence of the filling ratio and vehicle velocity on the vehicle stability through stochastic acceleration excitation. The results show that, in the case of different speeds, the liquid sloshing has a small influence on the overall roll angle; in the case of different filling ratios, the liquid sloshing has a big influence on the overall roll angle, the slip angle of the center of mass, and the yaw angular velocity; the filling ratio k = 0.85 and the speed u = 1 m/s−2 m/s are safe operation parameters of the sprayer. This research provides reference solutions for the stability control and optimization problems of the high-clearance sprayer and semitrailer.
Highlights
During the pesticide application process, multiple factors affect the stability of high-clearance sprayers
In practical traffic and transport, the dynamic pressure generated from the lateral sloshing of the liquid cannot be ignored. erefore, it is necessary to conduct further research on the lateral sloshing of the liquid in the high-clearance sprayer. is paper establishes a coupling relationship between the liquid sloshing and the highclearance sprayer by building an equivalent mechanical model of the pendulum mass damping to make a synthetic analysis of the influence of liquid sloshing on the driving stability of the sprayer through simulation. e research in this paper will provide references for the modeling of the chassis system kinetic model and the stability control strategies of the high-clearance sprayer
Liquid sloshing problems in engineering have always been designed to parallel mechanical models. is paper designs a spray tank filling system that mirrors the pendulum-mass-damping system as shown in Figure 6 and adopts the rigid system kinetics to research the response of such system under the action of external excitations
Summary
During the pesticide application process, multiple factors affect the stability of high-clearance sprayers. Liquid sloshing is an important factor that causes instability in highclearance sprayers and is of great significance to the analysis and resolution of the working stability problems of the highclearance sprayer by building an equivalent mechanical model of the liquid sloshing of the high-clearance sprayer and researching the liquid sloshing behaviors [1,2,3,4,5]. Hu Xiaoming et al built an equivalent mechanical model of liquid forced sloshing and solved associated parameters by taking the liquid tank semitrailer as an example. Afterward, they built a semitrailer kinetic model, added the forces and moments obtained from the equivalent model to the semitrailer kinetic model, and analyzed the influence of liquid sloshing on the stability of the semitrailer [13]. In practical traffic and transport, the dynamic pressure generated from the lateral sloshing of the liquid cannot be ignored. erefore, it is necessary to conduct further research on the lateral sloshing of the liquid in the high-clearance sprayer. is paper establishes a coupling relationship between the liquid sloshing and the highclearance sprayer by building an equivalent mechanical model of the pendulum mass damping to make a synthetic analysis of the influence of liquid sloshing on the driving stability of the sprayer through simulation. e research in this paper will provide references for the modeling of the chassis system kinetic model and the stability control strategies of the high-clearance sprayer
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