Transient Liquid Sloshing in Partially-Filled Tank Vehicles

Zheng, Xin; Li, Xian Sheng; Ren, Yuan; Zhu, Changfeng

doi:10.4028/www.scientific.net/amm.526.133

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Therefore, the first sloshing modal is the most important one. More details about the dynamics of liquid sloshing in partially filled tanks without or with baffles can be found in Zheng et al [37][38][39] Equivalent mechanical model for liquid sloshing Dynamic analysis of liquid sloshing in partially filled tanks showed that liquid sloshing approximates to linear oscillation when external excitation is quite small. Besides, the modal analysis of liquid sloshing reveals that the first modal is the most important one to reflect the dynamics of liquid sloshing.…”

Section: Dynamic Analysis Of Liquid Sloshing In Partially Filled Tanksmentioning

confidence: 99%

Rollover stability analysis of tank vehicles based on the solution of liquid sloshing in partially filled tanks

Zheng

Zhang

Ren

et al. 2017

Advances in Mechanical Engineering

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Tank vehicles have quite poor roll stability in driving. Therefore, the purpose of this article is to investigate tankers' roll stability by vehicle dynamic modeling. As a fluid-solid coupling multi-body system, tank vehicle's dynamic modeling must take liquid sloshing into account. The conventional solution on liquid sloshing by hydrodynamics is difficult and time-consuming, and the modeling of tankers obtained by this method was a distributed parameter system with infinite degree of freedoms. It was quite difficult and complicated to analyze tankers' dynamic features and to design active control system by the distributed parameter system. Therefore, three different methods to describe liquid sloshing effects in partially filled tanks with elliptical cross sections were proposed in this article, which are the estimation of liquid sloshing, the improved estimation of liquid sloshing, and the modeling of equivalent mechanical model for liquid sloshing. Then, the dynamic modeling of tank vehicles was commenced based on that. It was found out that the roll stability performance of tank vehicles obtained by different models differs with each other. The quasi-static model obtained by the estimation of liquid sloshing could get an estimation on tanker's rollover threshold quickly and easily, but it is with poor accuracy. The improved quasi-static model obtianed by the improved estimation of liquid sloshing could give a more accurate result on tanker's rollover threshold, the solution is also easily and quickly. Rollover analysis based on equivalent mechanical model of liquid sloshing could reflect vehicle's dynamics and is with high accuracy, but the process is of great complexity.

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Section: Dynamic Analysis Of Liquid Sloshing In Partially Filled Tanksmentioning

confidence: 99%

Rollover stability analysis of tank vehicles based on the solution of liquid sloshing in partially filled tanks

Zheng

Zhang

Ren

et al. 2017

Advances in Mechanical Engineering

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“…As regards tractor tanks, the introduction of internal partitions was impractical, at least for tanks with a carrying capacity of less than 20 tons, but with an increase in transport speeds, this norm becomes unacceptable. This nature of operation of partially filled tanks stimulates the formation of resonant oscillatory effects [1], which can lead to functional instability of the system, which may cause a deterioration in the technical and operational performance of vehicles. In addition, increased splashing of the free surface of the transported liquid is one of the factors in road accidents.…”

Section: Introductionmentioning

confidence: 99%

Improving the procedure for modeling low-frequency oscillations of the free surface liquid in a tractor tank

Kozhushko

Pelypenko

Кравченко

et al. 2023

EEJET

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This paper considers the influence of hydrodynamic processes in the movement of the free surface of liquid in partially filled tractor tanks. Splashing liquid in partially filled containers is a significant problem in the study of functional stability of movement in the marine, aerospace, rail, and automotive industries. After all, it affects productivity and traffic safety. The same effect was observed when performing transportation work while delivering liquid cargoes in the agricultural sector. That was due to increasing the transportation speeds of wheeled tractors. In the procedure, using the Rayleigh theory of surface waves, a linearized problem of motion of the free surface of a liquid is obtained. Based on Helmholtz's theorem, the components of scalar and Laplace field vector potentials of fluid velocity vector are separated. The potential problem for translational motion of fluid, in which vortex component of the field is absent, is considered. Instead of the fluid velocity potential, a scalar fluid displacement potential in Rayleigh surface waves was introduced. Comparing the results of calculating fluid splashing with the work of other scientists, a high convergence of natural frequencies of partial oscillators in 3D space was found. This is noticeable in the last quarter of the filling of the tank, in which significant displacements of the deep liquid occur. A feature of the results is the introduction, instead of the real shape of the container, an equivalent form of a parallelepiped, the final shape of which depends on the level of fullness. The frequency properties of movement of the free surface of liquid based on the standard size of tanks used in agriculture are separated. The proposed improved methodology could be used to increase stability, controllability, and smoothness when operating tanks with a wheeled tractor.

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Transient Liquid Sloshing in Partially-Filled Tank Vehicles

Cited by 2 publications

References 5 publications

Rollover stability analysis of tank vehicles based on the solution of liquid sloshing in partially filled tanks

Rollover stability analysis of tank vehicles based on the solution of liquid sloshing in partially filled tanks

Improving the procedure for modeling low-frequency oscillations of the free surface liquid in a tractor tank

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