Testing and modelling of the damping effects for fluid-based inerters

Liu, Xiaofu; Jiang, Jason Zheng; Titurus, Branislav; Harrison, Andrew J.; McBryde, Daniel

doi:10.1016/j.proeng.2017.09.171

Cited by 12 publications

(8 citation statements)

References 7 publications

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“…and the overall mass, damping, and stiffness matrices have, respectively, the following blockdiagonal structure: 2) , (5) where [0] m×n is a null matrix of dimension m × n.…”

Section: Uncontrolled Two-building Systemmentioning

confidence: 99%

“…Physical realizations of inerters with an approximate linear behavior have been carried out by means of flywheels with rack-andpinion and ball-screw mechanisms [2,3]. Other implementations include fluid inerters [4][5][6] and more advanced designs, as planetary flywheel inerters [7] and inerters with variable inertance [8][9][10]. Since their introduction in the earlies 2000s, inerters have been attracting an increasing research interest.…”

Section: Introductionmentioning

confidence: 99%

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Design of inerter-based multi-actuator systems for vibration control of adjacent structures

Quiñonero

Massegú

Rossell

et al. 2019

Journal of the Franklin Institute

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Distributed multi-actuator systems can provide effective solutions for mitigating the vibrational response of large structures. In this paper, we present a computational strategy to design inerter-based multi-actuation systems for the seismic protection of adjacent structures. The proposed approach allows considering both interstory and interbuilding Tuned Mass-Inerter Damper (TMID) actuators, and aims at simultaneously reducing the vibrational response of the individual buildings and avoiding the interbuilding impacts. The tuning procedure is based on an H ∞ costfunction and uses a constrained global-optimization solver to compute parameter configurations with high-performance characteristics. To illustrate the main features of this work, two different Tuned Inerter Damper (TID) multi-actuator schemes are considered for the seismic protection of a particular multi-story two-building system. A multi-actuator Tuned Mass Damper (TMD) system is also designed and is taken as a reference in the performance assessment. The obtained results demonstrate the flexibility and effectiveness of the proposed design methodology, and clearly show the superior performance and robustness of the TID actuation systems.

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“…and the overall mass, damping, and stiffness matrices have, respectively, the following blockdiagonal structure: 2) , (5) where [0] m×n is a null matrix of dimension m × n.…”

Section: Uncontrolled Two-building Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Design of inerter-based multi-actuator systems for vibration control of adjacent structures

Quiñonero

Massegú

Rossell

et al. 2019

Journal of the Franklin Institute

View full text Add to dashboard Cite

show abstract

“…Some nonlinearity factors of those passive inerters have been analyzed [25][26][27][28][29]. The effects of nonlinearity factors on the controllable inerter are more complex.…”

Section: Introductionmentioning

confidence: 99%

Design and Tests of a Controllable Inerter With Fluid-Air Mixture Condition

et al. 2020

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To realize the control of the inerter and establish a more realistic model of the controllable inerter, this paper designs a controllable inerter and analyzes its nonlinear factors. The ideal model, conventional nonlinear model, and calibrated nonlinear model of the controllable inerter are analyzed and the compressibility of fluid is studied. The prototype of a controllable inerter is tested on the bench and the friction force is identified. The bulk modulus of the fluid in controllable inerter in the fluid-air mixture condition and the pure fluid condition are analyzed. A suspension kinetics model with nonlinear controllable inerter is established. And the performances of the suspension with different nonlinear models are analyzed. The result shows that the inerter force can be reflected through the calibrated nonlinear model. The mixed air has a serious negative effect on the suspension performance and the nonlinear factors will take a negative effect on the control results.

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“…The use of inerters has recently expanded into buildings [9][10][11], road vehicles [12][13][14], aircraft landing gear [15,16] and optical tables [17]. First proposed in 2002 in the form of a rack and pinion design [6], other inerter designs have been proposed such as the ballscrew inerter used in Formula 1 [18], fluid inerters [19][20][21] and hydraulic inerters [22].…”

Section: Introductionmentioning

confidence: 99%

Using an inerter-based suspension to improve both passenger comfort and track wear in railway vehicles

Lewis

Jiang

Neild

et al. 2019

Vehicle System Dynamics

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There is an increasing desire in the railway industry to improve the longevity of wheels and rails without reducing performance in other ways (e.g. worsening passenger comfort). One way of reducing track and wheel wear is to reduce the primary yaw stiffness, significantly diminishing the costs associated with maintenance and emergency repairs, resulting however in reduced passenger comfort and high-speed stability. This paper, using a two-axle railway vehicle case study, demonstrates the potential of using passive, inerter-based suspensions to concurrently improve ride comfort and reduce track wear. The industrial parameter Tγ is used to quantify the frictional energy lost at the contact patch under curving conditions, and the lateral RMS carbody acceleration is used to quantify passenger comfort under straight running conditions, with lateral track disturbances taken from real track data. Optimisation results conclude that, with the default yaw stiffness value, compared with the default springdamper configuration in the primary lateral suspension, employing beneficial inerter-based configurations can improve passenger comfort by up to 43%. If the yaw stiffness is reduced such that the track wear is improved, similar improvements in passenger comfort can still be achieved with lateral inerter-based suspensions; for example, an improvement of 33% can still be achieved with a 50% reduction in yaw stiffness. Furthermore, when an inerter-based lateral suspension is used together with a Hall-Bush longitudinal suspension, the passenger comfort rises to 40%, which relates to a 25% improvement when compared with a non-inerter lateral plus Hall-Bush longitudinal setup.

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Testing and modelling of the damping effects for fluid-based inerters

Cited by 12 publications

References 7 publications

Design of inerter-based multi-actuator systems for vibration control of adjacent structures

Design of inerter-based multi-actuator systems for vibration control of adjacent structures

Design and Tests of a Controllable Inerter With Fluid-Air Mixture Condition

Using an inerter-based suspension to improve both passenger comfort and track wear in railway vehicles

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