A curved piezo-structure model: Implications on active structural acoustic control

Abstract

Current research in Active Structural Acoustic Control (ASAC) relies heavily upon accurately capturing the application physics associated with the structure being controlled. The application of ASAC to aircraft interior noise requires a greater understanding of the dynamics of the curved panels which compose the skin of an aircraft fuselage. This paper presents a model of a simply supported curved panel with attached piezoelectric transducers. The model is validated by comparison to previous work. Further, experimental results for a simply supported curved panel test structure are presented in support of the model. The curvature is shown to affect substantially the dynamics of the panel, the integration of transducers, and the bandwidth required for structural acoustic control.

<title>Smart aircraft panels: the effects of internal pressure loading on panel dynamics</title>

“…(1) These membrane forces will be applied to the simply-supported curved piezo-structure to determine the effects of internal pressure loading.…”

“…As part of this research, curvature was shown to significantly affect control system bandwidth and transducer coupling. 1 The present work will focus upon the effects of pressure loading on the dynamics of a curved panel and the implications of pressure loading on ASAC design strategies.…”

Active structural–acoustic control of laminated cylindrical panels using smart damping treatment

“…Further work on the active control of sound from the composite plate using a PVDF actuator is due to Kim and Yoon [19]. Henry and Clark [20,21] demonstrated the structural-acoustic control of an aluminum cylindrical panel coupled to a cylindrical enclosure using monolithic piezoelectric actuators. Their research brought out the important implications [20] that the curvature of a panel substantially affects the dynamics of the panel, the integrations of the transducers and the bandwidth required for structural-acoustic control.…”

“…Henry and Clark [20,21] demonstrated the structural-acoustic control of an aluminum cylindrical panel coupled to a cylindrical enclosure using monolithic piezoelectric actuators. Their research brought out the important implications [20] that the curvature of a panel substantially affects the dynamics of the panel, the integrations of the transducers and the bandwidth required for structural-acoustic control. Recently, Lane et al [22] studied the active structural-acoustic control of a launch vehicle fairing using monolithic piezoceramic actuators.…”

Active Control of Sound Transmission Through a Curved Panel Into a Cylindrical Enclosure

“…Previous research by the authors has resulted in the development of an analytical model of a typical fuselage panel in service conditions [14,15]. Recent research by the authors analyzed the structural acoustic coupling between a typical fuselage panel and a cylindrical enclosure [16].…”