Prediction of Highly Dynamic Airborne Tank Fuel Sloshing and Impact Effects

Baeten, André; Stern, Dirk

doi:10.2514/6.2008-658

Cited by 2 publications

(1 citation statement)

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“…Li [24] built the fluid-structure interaction model by MSC/Dytran while analysing the influence factor of oil tank sloshing and analysed the structure dynamics by Msc/Nastran. Baeten [25] proposed a three-dimensional, time accurate particle-cluster approach to predict highly dynamic airborne tank fuel sloshing and impact effects, as well as analyzed the dynamic behaviour of fuel inside a more complex geometry by simulating liquid sloshing in a toroidal tank. The results of this showed that fuel impact forces have a significant contribution to the pitch characteristics of external fuel tank.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Characteristics Analysis of a Rigid Body System with Spatial Multi-Point Supports

et al. 2022

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This paper presents the dynamic characteristics analysis of a rigid body system with spatial multi-point elastic supports, as well as the sensitivity analysis of support parameters. A rigid object is characterized by six degrees-of-freedom (DOFs) motions and considering the spatial location vector decomposition of elastic supports, a rigid body system dynamic model with spatial multi-point elastic supports is derived via the Lagrangian energy method. The system modal frequencies are calculated, and to be verified by finite element modal analysis results. Next, based on the above-mentioned model, system modal frequencies are obtained under different support locations, where the support stiffness components are different. Interpolate the stiffness components corresponding to each support location, calculate system modal frequencies, and the response surface model (RSM) for system modal frequencies is established. Further, based on the RSM modal analysis results, the allowable support location for the system modal insensitive area can be obtained. At last, a lubricating oil-tank system with four supports is taken as an example, and the effects of support spatial locations and stiffness components on the system inherent characteristics are discussed. This present work can provide a basis for the dynamic design of the spatial location and stiffness for this type of installation structures.

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Section: Introductionmentioning

confidence: 99%