A Standing-Wave-Type Sloshing Absorber to Control Transient Oscillations

Anderson, J.G.; Semercigil, S.E.; Turan, Ozden

doi:10.1006/jsvi.1999.2248

Cited by 58 publications

(25 citation statements)

References 8 publications

(15 reference statements)

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“…The poor energy dissipation characteristics of standing sloshing waves have been reported earlier [3]. On the other hand, a sloshing absorber has recently been investigated by the present authors [5], using deep liquid levels to intentionally create standing waves.…”

Section: Introductionmentioning

confidence: 90%

“…These #uid forces were then assumed to remain constant for one time-step to compute the oscillator's response which was then used as the moving boundary of the container for the #uid solution. Details of the numerical procedure are given in reference [5] along with detailed experimental validation of the numerical model.…”

Section: Numerical Proceduresmentioning

confidence: 99%

“…Firstly, an explanation is o!ered for the e!ectiveness of the ba%ed sloshing-wave absorber which was introduced in reference [5]. Secondly, based on this explanation, a modi"cation of the earlier sloshing absorber is described.…”

Section: Introductionmentioning

confidence: 99%

“…At the fundamental mode the standing sloshing wave in the absorber is tuned to the natural frequency of the structure to be controlled [5]. In the current investigation, ba%e plates which are cantilevered from the vertical sides of the container, have been used to change a standing sloshing wave to an &&apparent'' travelling wave in the region near the ba%es.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

An Improved Standing-Wave-Type Sloshing Absorber

Anderson¹,

Semercigil²,

Turan³

2000

Journal of Sound and Vibration

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Section: Introductionmentioning

confidence: 90%

Section: Numerical Proceduresmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Improved Standing-Wave-Type Sloshing Absorber

Anderson¹,

Semercigil²,

Turan³

2000

Journal of Sound and Vibration

Self Cite

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“…Anderson et al [75] show that the damping performance of an oscillating tank can be improved by the introduction of baffles, though correct placement is essential for maximum effect. In that context, an optimisation method for the design of tank baffles to improve damping should offer the ability to design the number, placement and geometry of the baffles in a given tank.…”

Section: Baffle Optimisationmentioning

confidence: 99%

A volumetric geometry and topology parameterisation for fluids-based optimisation

et al. 2017

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. A volumetric geometry and topology parameterisation for fluids-based optimisation. Computers and Fluids, 148,[137][138][139][140][141][142][143][144][145][146][147][148][149][150][151][152][153][154][155][156] University of Bristol -Explore Bristol Research General rightsThis document is made available in accordance with publisher policies. Please cite only the published version using the reference above. AbstractA new geometry and topology parameterisation method is presented which is based on creating a parameterisation grid of cells and reconstructing surfaces from the fraction of the cell volume defined to be solid, with the volume fractions acting as design variables. This method is able to include topological changes alongside fine-level geometric control, and therefore offers a significant increase in flexibility. In this work, the geometric capabilities of the method are confirmed by successfully constructing a variety of surfaces, using both arbitrary object outlines and aerofoil geometries. The method is then used in a range of optimisation problems covering the design of a coastal defence, increasing fluid damping within an oscillating box by the addition of baffles, and design of a multi-body configuration for minimum drag in supersonic flow. These problems demonstrate the benefits of a parameterisation for fluids modelling that is capable of topological changes and which can be used with global search as well as gradient-based methods.

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Enhancing tunability of liquid storage tanks to function as deep tuned liquid dampers by use of a submerged stretched membrane

Konar

Das²,

Ghosh

2022

Structural Contr & Hlth

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This is a study on a deep, liquid-containing tank, such as an overhead water tank on a building, with a vertically submerged stretched membrane (SSM). Here, instead of the sloshing mode, which can become detuned and also affords a low damper mass ratio, the impulsive liquid-membrane interacting system is designed to serve as a dynamic vibration absorber. The requirement of tuning the frequency of the impulsive liquid-membrane interacting system to the structural frequency can be achieved without any imposition on the tank dimensions, which are generally fixed from the tank's functional requirements. The system frequency would remain unchanged so long the membrane would remain submerged below a minimum liquid depth, thereby allowing fluctuation of liquid level within a prescribed range of the tank depth.The formulation for obtaining the frequency of the impulsive liquidmembrane interacting system is derived, using the sub-domain partition approach. It is seen that through suitable adjustment of the design parameters of the membrane, the proposed tank damper can be tuned to both short-period and to long-period structures. Further, the impulsive liquid mass, which otherwise has no role to play in the damping mechanism of a tuned liquid damper (TLD), is here utilized to absorb and dissipate the vibrational energy.Through a time-domain study considering recorded seismic accelerograms, the significant control effectiveness of the proposed damper system is illustrated.Further, the results obtained from the equivalent mechanical model of the structure-damper system are compared with those from a finite element analysis of the fluid-structure system in the ANSYS Workbench environment.

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A Standing-Wave-Type Sloshing Absorber to Control Transient Oscillations

Cited by 58 publications

References 8 publications

An Improved Standing-Wave-Type Sloshing Absorber

An Improved Standing-Wave-Type Sloshing Absorber

A volumetric geometry and topology parameterisation for fluids-based optimisation

Enhancing tunability of liquid storage tanks to function as deep tuned liquid dampers by use of a submerged stretched membrane

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