A modal-based approach for optimal active modifications of resonance modes

Peters, H.J.; Tiso, Paolo; Goosen, J.F.L.; Keulen, Fred van

doi:10.1016/j.jsv.2014.09.006

Cited by 1 publication

(2 citation statements)

References 30 publications

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“…Peters et al [13] utilized eigenmode sensitivities to identify preferable locations in the structure to improve system response. Additional work [12] includes the identification of temporary changes in the structure to minimize power consumption. This work presents a continuation of the author's effort to improve the sound attenuation of passive Helmholtz resonators with a flexible circular plate.…”

Section: Productsmentioning

confidence: 99%

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Tailoring Plate Thickness of a Helmholtz Resonator for Improved Sound Attenuation

Kurdi¹,

Nudehi

Duncan

2019

Journal of Vibration and Acoustics

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In this work, the transmission loss of a Helmholtz resonator is maximized (optimized) by allowing the resonator end plate thickness to vary for two cases: (1) a nonoptimized baseline resonator and (2) a resonator with a uniform flexible endplate that was previously optimized for transmission loss and resonator size. To accomplish this, receptance coupling techniques were used to couple a finite element model of a varying thickness resonator end plate to a mass-spring-damper model of the vibrating air mass in the resonator. Sequential quadratic programming was employed to complete a gradient-based optimization search. By allowing the end plate thickness to vary, the transmission loss of the nonoptimized baseline resonator was improved significantly, 28%. However, the transmission loss of the previously optimized resonator for transmission loss and resonator size showed minimal improvement.

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Section: Productsmentioning

confidence: 99%

“…Substituting the expression for η r in the frequency domain from (13) into (12), will yield the displaced volume of the resonator plate in the frequency domain as shown below:…”

Section: Analysis Modelmentioning

confidence: 99%