Vibration damping of a flexible car body structure using piezo-stack actuators

Kozek, Martin; Benatzky, Christian; Schirrer, Alexander; Stribersky, Anton

doi:10.1016/j.conengprac.2009.08.001

Cited by 30 publications

(5 citation statements)

References 13 publications

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“…However, most works focus on methods such as optimizing the car body structure, 5 using active suspension system, 6,7 changing the specifications of car body, bogies and their connecting elements, 8 increasing car body structure damping, 9 and mounting piezoelectric actuators on the car body structure. 10,11 Few research works have paid attention to the approach by adding a secondary oscillator to the car body (devices suspended under the car body can be naturally utilized). This secondary oscillator is commonly called a dynamic vibration absorber (DVA).…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental studies on the car body flexible vibration reduction due to the effect of car body-mounted equipment

Huang

Zeng

Luo

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part F:

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To study the effect of car body-mounted equipment on the car body flexible vibration, a vertical rigid-flexible coupling model of a high-speed vehicle is established, which includes a flexible car body, rigid bodies for two bogie frames, four wheelsets, and the car body-mounted equipment. The car body is approximated by an elastic beam, with dimensions selected to give similar mass and vertical bending frequency to an existing car body. Model validation is then carried out by comparing results from numerical simulation and on-track test. Using frequency response analysis and ride comfort analysis, parametric studies are undertaken in order to investigate the respective effect of equipment mounting systems on the car body flexible vibration and ride comfort perceived by the passenger. It is found that the equipment behaves as a dynamic vibration absorber on account of its elastic connections to the car body. The stiffness, damping, mass, and installing position of the equipment have a significant influence on the car body flexible vibration. The optimal parameters of the dynamic vibration absorber are given, which can contribute much to the vibration absorption of the car body flexible vibration. Finally, extensive tests on a high-speed test vehicle are conducted to represent a part of results obtained in the numerical study, including modal tests on the car body, component tests on rubber springs used in the equipment mounting systems, and roller rig tests on the vibration absorption performance of the equipment. It is shown that the car body flexible vibration can be effectively suppressed by reasonably suspending the car body-mounted equipment.

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Section: Introductionmentioning

confidence: 99%

Numerical and experimental studies on the car body flexible vibration reduction due to the effect of car body-mounted equipment

Huang

Zeng

Luo

et al. 2016

Proceedings of the Institution of Mechanical Engineers, Part F:

View full text Add to dashboard Cite

show abstract

“…electro-and magnetorheological dampeners; Dassisti et al, 2021) or by creating an interfering vibration patterns that cancel each other out (e.g. piezoelectric-based vibration dampeners; Kozek et al, 2011). The advantage of active damping systems over passive systems is their capability to damp vibrations with a broader spectrum of frequencies.…”

Section: Elimination Of Vibrations During Propagation Andmentioning

confidence: 99%

“…In case of humans, vibrations can also be very harmful with long and frequent exposure (Hagood and Flotow, 2003). To prevent unwanted vibrations, various types of passive and active damping methods were developed (Kowal et al, 1995;Rivin, 2001;Benjeddou and Ranger, 2006;Brownjohn and Pavic, 2006;Kozek et al, 2011).…”

Section: Introductionmentioning

confidence: 99%

Research on a cascade model synthesis with the use of classical and non-classical methods in the context of new piezoelectric stack applications

Harazin

Wróbel

2021

Mech. Sci.

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Abstract. Active audio noise cancellation technology using piezoelements is fairly new and emerging technology on the market in recent years and is still gaining in popularity. The ability to use piezoelectric devices to gather information about vibration spectrum and to create interfering waves, to cancel out the noise, allows for the reduction in passive vibration methods and gives more flexibility in terms of space and application. The idea of using this technique on larger scales such as industrial equipment is the focus of ongoing research conducted by the authors of this article. This work is intended as the first part of a larger project and focuses solely on theoretical approach to the problem of modelling mechatronic systems capable of creating complex vibration spectrums and using piezoelectric components. The authors have focused on creating a mix of classical and non-classical methods to synthesize model systems based on input resonance frequencies. A classical calculation through matrix equations was also done to validate the accuracy of obtained results through the structural number method. The resulting model is still awaiting the empirical verification through extensive testing on real-life models, and that part of the research is still being developed. When validated and checked, this technology could bring new solutions in the vibration damping of industrial equipment, potentially increasing its flexibility and effectiveness.

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“…A co-simulation between Simulink and Simpack can be obtained using SIMAT environment which is explained in the literature. 13,14 The inputs to the Simulink model are the sensor data, i.e. displacement ( x swr ) and velocity ( v swr ) of the switch rails which are the outputs of the Simpack model.…”

Section: Simulation Model Of the Full Switch Systemmentioning

confidence: 99%

A new approach to railway track switch actuation: Dynamic simulation and control of a self-adjusting switch

Dutta

Harrison

Ward

et al. 2019

Proceedings of the Institution of Mechanical Engineers, Part F:

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The track switch is one of the key assets in any railway network. It is essential to allow trains to change route; however, when it fails, significant delays are almost inevitable. A relatively common fault is ‘loss of detection’, which can happen when there is a gradual track movement and the switch machines (actuators) no longer close the gap between the switch rail and stock rail to within safe tolerance levels. Currently, such misalignment is mitigated by a preventative programme of inspection and manual re-adjustment. In contrast to many other industries, the actuators are exclusively operated in open loop, with sensors (often limit switches) mainly being used for detection. Hence, an opportunity exists to investigate the closed loop control concepts for improving the operation of the switch. This paper proposes two advances: first, a novel approach is taken for modelling the dynamic performance of track switch actuators and the moving permanent-way components of the switch. The model is validated against real data from an operational switch. Secondly, the resulting dynamic model is then used to examine the implementation of closed loop feedback control as an integral part of track switch actuation. The proposed controller is found to perform well and offers the potential of ‘self-adjustment’, i.e. re-adjusting itself to close any gap (within a predefined range) between the stock and switch rails, thereby completing the switching operation.

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Vibration damping of a flexible car body structure using piezo-stack actuators

Cited by 30 publications

References 13 publications

Numerical and experimental studies on the car body flexible vibration reduction due to the effect of car body-mounted equipment

Numerical and experimental studies on the car body flexible vibration reduction due to the effect of car body-mounted equipment

Research on a cascade model synthesis with the use of classical and non-classical methods in the context of new piezoelectric stack applications

A new approach to railway track switch actuation: Dynamic simulation and control of a self-adjusting switch

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