ORIGINAL RESEARCH article
Front. Built Environ.
Sec. Earthquake Engineering
Volume 11 - 2025 | doi: 10.3389/fbuil.2025.1601285
This article is part of the Research TopicRecent Advances in Smart Structures for Vibration Control and Structural Health Monitoring: Focusing on Sustainable Approaches and Digital InnovationsView all articles
Effects of active vibration control of simply supported plates on sound radiation
Provisionally accepted
- University of Innsbruck, Innsbruck, Tyrol, Austria
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This paper deals with the effects of different active vibration control strategies applied to a vibrating structure on its sound radiation, taking into account the effect of the position of the excitation force. This is done by means of numerical analyses of a simply supported plate, where both the sound pressure field and the radiated sound power are computed for both uncontrolled and controlled systems. Reflections of the sound waves from walls placed around the vibrating plate are considered using the image source method. Although the vibration mitigation of the plate is achieved by active control measures, it does not imply a reduction of the sound propagation. This means that if the vibration of the plate is attenuated, the sound radiated by the plate can be amplified, an effect that is usually undesirable in practice. By simulating different strategies of active control, the study shows that, among the analyzed approaches, direct velocity feedback control provides the best overall reduction in terms of structural vibration and acoustic radiation.
Keywords: active vibration control, feedback control, Reflections, Simply supported plate, sound radiation
Received: 27 Mar 2025; Accepted: 09 May 2025.
Copyright: © 2025 Hirschfeldt, Furtmüller and Adam. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence: Christoph Adam, University of Innsbruck, Innsbruck, 6020, Tyrol, Austria
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