Abstract: “The aim of my current research is to improve the acoustic performance of a sandwich plate with corrugated core. It finds application in high speed trains and aircraft, where a major concern for the comfort of passengers is the low frequency noise, especially after the ineffectiveness methods of geometric optimization and passive control. Active control by means of PZT patch is the approach my research will follow. When the dynamics of the structure is studied, the boundary conditions (BC) play an important role: they influence natural frequencies and mode shapes, and the way the active control should be implemented. In this paper I show my results on the vibroacoustics performance of the sandwich structure, together with the influence of BC on the actuator placement.”

Keywords: vibroacoustics analysis, sandwich beam, uncertain BCs, PZT, active structural acoustics control