Determining structural damping and vibroacoustic characteristics of a non-symmetrical vibrating plate in free boundary conditions using the modified Helmholtz equation least squares method

• Published in: Journal of sound and vibration Vol. 495; p. 115903
• Main Authors: Figueroa, Antonio, Telenko, Michael, Chen, Lingguang, Wu, Sean F.
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier Ltd 17.03.2021; Elsevier Science Ltd
• Subjects: Acoustics; Arrays; Benchmarks; Boundary conditions; Damping; Damping ratio; Data points; Free boundaries; Frequency ranges; Helmholtz equations; HELS; Least squares method; Microphones; NAH; Normal surface velocity; ODS; Planar structures; Radiated acoustic pressures; Reconstruction; Velocity distribution; Vibration; Vibration meters; Reconstruction; Normal surface velocity; Radiated acoustic pressures; NAH; HELS; ODS

This paper presents a comprehensive study to determine the structural damping and vibroacoustic responses of an arbitrarily shaped planar structure subject to non-contact acoustic excitations under free boundary conditions using a modified HELS (Helmholtz equation least squares) method. The input da...