Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Sound radiation from point-driven shell structures
A numerical study is presented showing the structural response and sound radiation from a range of thin shell structures excited by a point force: a baffled flat plate, a sphere, a family of spheroids and a family of closed circular cylinders. All the structures have the same material properties, thickness and total surface area so the asymptotic modal density is the same. Dramatic differences are shown in the total radiated sound power for the different shells. It was already known that the flat plate and the sphere behave very differently. These results show that the cylinders and, particularly, the spheroids show patterns that are not intermediate between the two but instead display new features: in certain frequency ranges the radiated sound power can be at least an order of magnitude greater than either the plate or the sphere.
Sound radiation from point-driven shell structures
A numerical study is presented showing the structural response and sound radiation from a range of thin shell structures excited by a point force: a baffled flat plate, a sphere, a family of spheroids and a family of closed circular cylinders. All the structures have the same material properties, thickness and total surface area so the asymptotic modal density is the same. Dramatic differences are shown in the total radiated sound power for the different shells. It was already known that the flat plate and the sphere behave very differently. These results show that the cylinders and, particularly, the spheroids show patterns that are not intermediate between the two but instead display new features: in certain frequency ranges the radiated sound power can be at least an order of magnitude greater than either the plate or the sphere.
Sound radiation from point-driven shell structures
Lynch, C.M. (Autor:in) / Woodhouse, J. (Autor:in) / Langley, R.S. (Autor:in)
Journal of Sound and Vibration ; 332 ; 7089-7098
2013
10 Seiten, 8 Quellen
Aufsatz (Zeitschrift)
Englisch
Flow-induced Sound Radiation from Air-ducting Structures
| British Library Conference Proceedings | 2009
Measurement of sound radiation characteristics on diverse vibrating structures
| British Library Online Contents | 1999
Sound radiation from poroelastic materials
| British Library Conference Proceedings | 2005