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

Dai, Liming; Xu, Liang; Setiawan, Budi

doi:10.1243/146441905x9944

Cited by 9 publications

(7 citation statements)

References 15 publications

(24 reference statements)

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“…Adding liquid, these equations are charged to 3 degrees of freedom problem. Figure 5 shows the dynamic and vibration model of the liquid in the tank considering as a constant mass and a sloshing mass [13]. Accordingly, longitudinal vibration equations caused by the collision of whole system can be written as follows:…”

Section: Dynamic Methods For Collision Of Tank Containing Fluidmentioning

confidence: 99%

Investigating the Effect of Sloshing on the Energy Absorption of Tank Wagons Crash

Razaghi

Sharavi

Feizi

2015

Transactions of the Canadian Society for Mechanical Engineering

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One of the main fluid mechanics phenomena is fluid sloshing which is originated from the free surface of fluid and should be taken into account in design of fluid structures such as fuel tank wagons, ships and so on. The aim of this paper is to investigate the effect of tank fluid sloshing on energy absorption and reducing tank acceleration during the tank wagon impact. For this purpose, methods of software simulation and dynamics solution methods are accomplished. The assumed wagon includes a tank with the approximate volume of 95 m3 and capacity of 65 tons of fluid. Using finite element method, the tank impact is simulated based on the corresponding standards for different heights of fluid in the tank. Obtained results show fluid height increase has an inappropriate effect on energy absorption among impact however the more fluid in tank, the more time would be consumed for energy absorption in general. At the end, by using crash test results for a tank with aforementioned scale, validity of impact software simulation and dynamic solution method considering the tank fluid as mass-spring model are checked.

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Section: Dynamic Methods For Collision Of Tank Containing Fluidmentioning

confidence: 99%

Investigating the Effect of Sloshing on the Energy Absorption of Tank Wagons Crash

Razaghi

Sharavi

Feizi

2015

Transactions of the Canadian Society for Mechanical Engineering

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“…While all the other parameters are already known, b f can be obtained from equation (36). Until now, parametric expressions for trammel pendulum can be expressed as…”

Section: Equivalent Mechanical Model For Liquid Sloshingmentioning

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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“…Hence in the aerospace domain, this approach was widely used. 6–9 In order to obtain more accurate results, many approximation methods were developed. Moiseev 10 constructed normal mode functions by integral equations in terms of Green’s function of the second kind.…”

Section: Introductionmentioning

confidence: 99%

Dynamic behaviors of flexible fluid containers with fuel consumption

Zhang

Luo

et al. 2015

Proceedings of the Institution of Mechanical Engineers, Part C:

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This study focuses on the dynamic characteristics of the containers with fuel consumption. With fuel consumption, the fuel container system vibrates with decreasing mass, which is a typical variable mass system. In order to investigate the influences of the time-varying liquid on vibration of the containers, this fluid–structure coupling system with time-varying mass is modeled combining finite element method, used to model the structure, and virtual mass method representing the fluid. The dynamic responses and time–frequency analysis of the time-varying mass system are presented based on the numerical simulations. From the results, it is shown that decrease of the mass results in increase of the vibration frequencies of the system and induces an additional negative damping. The additional negative damping is proportional to the rate of mass change and causes the vibration to decay slowly. The results also suggest that the time–frequency analysis possess appealing advantages in processing nonstationary signals and thus are able to provide reliable time–frequency domain information for time-varying mass systems.

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

Cited by 9 publications

References 15 publications

Investigating the Effect of Sloshing on the Energy Absorption of Tank Wagons Crash

Investigating the Effect of Sloshing on the Energy Absorption of Tank Wagons Crash

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

Dynamic behaviors of flexible fluid containers with fuel consumption

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