Comparison of Damping Performance of Tuned Mass Dampers and Shunted Piezo Elements

Neubauer, Marcus; Oleskiewicz, Robert; Popp, Karl

doi:10.1002/pamm.200510039

Cited by 12 publications

(5 citation statements)

References 1 publication

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“…This equation allowed them to realize that the addition of an inductor would create another degree of freedom. Therefore, the use of a RL shunt demonstrates behavior analogous to a tuned-mass absorber/damper (Hagood and von Flotow 1991;Neubauer, Oleskiewicz et al 2005). Yet, this type of shunt only has the ability to control vibration at one resonance.…”

Section: Introductionmentioning

confidence: 99%

Experimental Analysis of a Cantilever Beam with a Shunted Piezoelectric Periodic Array

Beck

Cunefare

Ruzzene

et al. 2011

Journal of Intelligent Material Systems and Structures

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The use of both shunted piezoelectric elements and periodic arrays have been investigated independently as well as used in conjunction to modify the vibration of a system. Piezoelectric patches bonded to a cantilever beam which are shunted with an active circuit, specifically a negative capacitance shunt, can control broadband flexural vibrations of a structure. Also, periodic arrays integrated into a structure allow for modification of propagating waves through the mechanical "stop-bands". The performance of a combined shunted periodic piezoelectric patch array will be analyzed here by investigating the velocity amplitude of the beam upstream and downstream of the array section, and the number of control elements in the array. The negative capacitance shunts caused a global spatial average velocity reduction of 5 dB at the modal peaks from 500 to 5000 Hz. The reduction is shown to be greater in the downstream section of the beam. Also, by increasing the number of patches in the array the attenuation of the resonances increased nonlinearly. The results show that a negative capacitance periodic control array is an effective global vibration reduction system and has the ability to localize energy near the forcing of a structure.

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Section: Introductionmentioning

confidence: 99%

Experimental Analysis of a Cantilever Beam with a Shunted Piezoelectric Periodic Array

Beck

Cunefare

Ruzzene

et al. 2011

Journal of Intelligent Material Systems and Structures

View full text Add to dashboard Cite

show abstract

“…In this contribution, however, the maximum stable vibration attenuation is found experimentally by adjusting the resistors R, R L1 and R N2 while observing the measured frequency transfer function H(ω), (13), on the FFT analyzer.…”

Section: Rl-and Rlc-shunt Circuitsmentioning

confidence: 92%

“…By shunting a piezoelectric transducer with resistance and inductance, the RL-shunt, a tunable electrical oscillation circuit with an inherent capacitance of the transducer is created. This electromechanical system acts similar to a mechanical vibration absorber [13,14]. Contrary to the mechanical vibration absorber, the transducer shunted with an RL-network has no moving mass and, hence, no complex mechanical stiffness and damping elements are required.…”

Section: Introductionmentioning

confidence: 99%

Effect of static axial loads on the lateral vibration attenuation of a beam with piezo-elastic supports

Götz

Platz

Melz

2018

Smart Mater. Struct.

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In this paper, vibration attenuation of a beam with circular cross-section by resonantly shunted piezo-elastic supports is experimentally investigated for varying axial tensile and compressive beam loads. The beam's first mode resonance frequency, the general electromechanical coupling coefficient and static transducer capacitance are analyzed for varying axial loads. All three parameter values are obtained from transducer impedance measurements on an experimental test setup. Varying axial beam loads manipulate the beam's lateral bending stiffness and, thus, lead to a detuning of the resonance frequencies. Furthermore, they affect the general electromechanical coupling coefficient of transducer and beam, an important modal quantity for shunt-damping, whereas the static transducer capacitance is nearly unaffected. Frequency transfer functions of the beam with one piezoe-elastic support either shunted to an RL-shunt or to an RL-shunt with negative capacitance, the RLC-shunt, are compared for varying axial loads. It is shown that the beam vibration attenuation with the RLC-shunt is less influenced by varying axial beam loads and, therefore, is more robust against detuning.

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“…is frequently applied as a tuned-mass-damper (TMD) system, which shows some similarities to seismic harvesters [14,15]. In the analysis, the host structure was assumed to have fixed modal parameters, and the mechanical to mechanical coupling effect and the harvester performance are discussed by tuning the mass ratio between the harvester and the host structure to give a brief idea of the design of a seismic type piezoelectric harvester for a fixed host structure.…”

Section: Introductionmentioning

confidence: 99%

The effect of frequency detuning and seismic energy scavenging on the host structure and harvesting performance under broadband excitation

Lallart

Richard

et al. 2013

Smart Mater. Struct.

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In this work, the effect of seismic energy harvesting on the host structure and the harvesting performance will be discussed under broadband excitation with a view to exploring a more practical case. This work focuses on the harvester design for a fixed host structure under broadband force excitation. The modeling of the whole system is based on stochastic theory and the system performance is discussed with numerical calculations using this stochastic modeling. In addition to analysis on the coupling between the host structure and the harvester, the effect of frequency detuning between the harvester and host structure resonant frequencies is also presented. Two design criteria (constant force factor and constant electromechanical coupling factor) are proposed to show different energy conversion processes. In both cases, the optimal harvested powers are found when the resonant frequency of the harvester is perfectly matched with the resonant frequency of the host structure. With a constant force factor, the harvester performance is very sensitive to the frequency detuning effect. With a constant electromechanical coupling factor, however, there is very little variation in the harvested power when the two resonant frequencies are detuned.

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Comparison of Damping Performance of Tuned Mass Dampers and Shunted Piezo Elements

Cited by 12 publications

References 1 publication

Experimental Analysis of a Cantilever Beam with a Shunted Piezoelectric Periodic Array

Experimental Analysis of a Cantilever Beam with a Shunted Piezoelectric Periodic Array

Effect of static axial loads on the lateral vibration attenuation of a beam with piezo-elastic supports

The effect of frequency detuning and seismic energy scavenging on the host structure and harvesting performance under broadband excitation

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