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

2017 ◽  
Vol 9 (6) ◽  
pp. 168781401770389 ◽  
Author(s):  
Xue-lian Zheng ◽  
Hao Zhang ◽  
Yuan-yuan Ren ◽  
Ze-hong Wei ◽  
Xi-gang Song
Keyword(s):  
Stability Analysis ◽  
Liquid Sloshing ◽  
Rollover Stability ◽  
Tank Vehicles

A Mechanical Model for Dynamic Behavior of Large Amplitude Liquid Sloshing in Partially Filled Tank Vehicles

2003 ◽  
Author(s):  
Liang Xu ◽  
Liming Dai
Keyword(s):  
Mechanical System ◽  
Dynamic Behavior ◽  
Large Amplitude ◽  
Mechanical Model ◽  
Structure Design ◽  
Liquid Sloshing ◽  
Liquid Motion ◽  
Mass Model ◽  
Longitudinal Dynamic ◽  
Tank Vehicles

A mechanical model of liquid sloshing is developed to investigate the longitudinal dynamic characteristics of partially filled liquid cargo tank vehicles during typical straight-line driving. The dynamic liquid motion is modeled by utilizing a mechanical system that describes the behavior of the liquid motion as a linear spring-mass model augmented with an impact subsystem for longitudinal oscillations. Computer simulation of tank vehicles under rough road conditions is performed by incorporating the forces and moments caused by liquid motion into the pitch plane vehicle model. The fifth wheel loads and the normal axle loads, which are key factors to vehicle structure design, fatigue analysis and vehicle performance characteristics, are computed using the mechanical system approach in order to investigate the influence of liquid motion. This study presents a new approach to investigate the longitudinal dynamic behavior of partially filled tank vehicles under large amplitude liquid sloshing.

A new non-linear approach to analysing the dynamic behaviour of tank vehicles subjected to liquid sloshing

2005 ◽  
Vol 219 (1) ◽  
pp. 75-86 ◽  
Author(s):  
L Dai ◽  
L Xu ◽  
B Setiawan
Keyword(s):  
Dynamic Behaviour ◽  
Linear Models ◽  
Fluid Motion ◽  
Liquid Sloshing ◽  
New Approach ◽  
Linear Dynamic ◽  
Longitudinal Dynamic ◽  
Linear Approach ◽  
Non Linear ◽  
Tank Vehicles

This research presents a new approach to investigating the non-linear dynamic behaviour of partially filled tank vehicles under large-amplitude liquid sloshing. A non-linear impact model for liquid sloshing in partially filled liquid tank vehicles is established for investigating the longitudinal dynamic characteristics of tank vehicles under typical driving conditions. The dynamic fluid motion within the tank is modelled by utilizing an analogy system together with an impact subsystem for longitudinal oscillations. The forces on the fifth wheel and the axles of the vehicle are determined in considering the effects of the liquid sloshing in the tank. The non-linear dynamic behaviours of the tank vehicle subjected to liquid sloshing and the excitations generated by rough roads are analysed and compared with those of linear models. Numerical simulation of the tank vehicle under typical rough road conditions is performed.

Transient Liquid Sloshing in Partially-Filled Tank Vehicles

2014 ◽  
Vol 526 ◽  
pp. 133-138 ◽  
Author(s):  
Xue Lian Zheng ◽  
Xian Sheng Li ◽  
Yuan Yuan Ren ◽  
Zhu Qing Cheng
Keyword(s):  
Time Variation ◽  
Liquid Sloshing ◽  
Lateral Acceleration ◽  
External Excitation ◽  
Mean Values ◽  
Calculation Results ◽  
Scope Of Application ◽  
The Mean ◽  
Fill Level ◽  
Tank Vehicles

To investigate the accuracy and the scope of application of the QS method in transient liquid sloshing, 3 different tanks are selected as the research object. The liquid fill level is set at 0.6 and the constant lateral acceleration changes from 0.1 g to 0.4 g. The transient liquid sloshing is simulated by FLUENT and the relevant QS results are solved at the same conditions. The mean and maximum values for transient liquid sloshing effect are compared with the corresponding QS results. It was found that the mean values in a cycle are quite close to the QS calculation results. Furthermore, the QS method can only be used when the external excitation is constant and smaller. For lateral acceleration which is constant but large, and time-variation ones, the QS method is not suitable.

scholarly journals Equivalent Mechanical Model for Lateral Liquid Sloshing in Partially Filled Tank Vehicles

2012 ◽  
Vol 2012 ◽  
pp. 1-22 ◽  
Author(s):  
Zheng Xue-lian ◽  
Li Xian-sheng ◽  
Ren Yuan-yuan
Keyword(s):  
Cross Sections ◽  
Mechanical Model ◽  
Dynamic Effect ◽  
Liquid Sloshing ◽  
Lateral Acceleration ◽  
New Approach ◽  
Roll Control ◽  
Equivalent Mechanical Model ◽  
Parameter Values ◽  
Tank Vehicles

This paper reports a new approach to investigating sloshing forces and moments caused by liquid sloshing within partially filled tank vehicles subjected to lateral excitations. An equivalent mechanical model is used in the paper to approximately simulate liquid sloshing. The mechanical model is derived by calculating the trajectory of the center of gravity of the liquid bulk in tanks as the vehicle’s lateral acceleration changes from 0 to 1 g. Parametric expressions for the model are obtained by matching the dynamic effect of the mechanical model to that of liquid sloshing. And parameter values of a liquid sloshing dynamic effect, such as sloshing frequency and forces, are acquired using FLUENT to simulate liquid sloshing in tanks with different cross-sections and liquid fill percentages. The equivalent mechanical model for liquid sloshing in tank vehicles is of a great significance for simplifying the research on roll stability of tank vehicles and for developing active/passive roll control systems for these vehicles.

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