This paper brings into focus some of the interesting effects arising from the non-linear motion of the liquid free surface, due to sloshing, in a partially filled laminated composite container along with the associated coupling due to fluid-structure interaction effects. The finite element method based on two-dimensional fluid and structural elements is used for the numerical simulation of the problem. A numerical scheme is developed on the basis of a mixed Eulerian-Lagrangian approach, with velocity potential as the unknown nodal variable in the fluid domain and displacements as the unknowns in the structure domain. The FE formulation based on Galerkin weighted residual method along with an iterative solution procedure are explained in detail followed by a few numerical examples. Simulation results of liquid sloshing induced by earthquake and harmonic base excitations are compared with those of the linear theory and the limitation of the latter in assessing the non-linear coupled response of flexible container is addressed. The computational procedures are advanced to obtain the coupled interaction effect of non-linear sloshing in laminated composite containers. This led to a significant change in the amplitude of sloshing response of the composite and its corresponding rigid tank model which indicates the importance of tank flexibility on the design of flexible liquid-filled containers. The behaviours of the linear and non-linear sloshing response are seen to be significantly different with increase in amplitude and time period elongation in later case.
Non-linear coupled slosh dynamics of liquid-filled laminated composite containers: a two dimensional finite element approach
Nichtlineare gekoppelte Dynamik von Flüssigkeitsspritzern in mit Flüssigkeiten gefüllten laminierten Containern aus Verbundwerkstoffen: eine zweidimensionale Finite-Elemente Nährung
Journal of Sound and Vibration ; 261 , 4 ; 729-749
2003
21 Seiten, 12 Bilder, 16 Quellen
Aufsatz (Zeitschrift)
Englisch
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