Fatigue analysis of acoustic black holes
Fatigue analysis of acoustic black holes
Acoustic black holes (ABHs) are realised via modifications to a structure that effectively reduce the structural wave speed, which increases the effect of damping treatments and thus enhances the achievable vibration attenuation. ABHs are commonly designed using a tapering thickness profile and this leads to part of the ABH being very thin. Due to the focusing effect of the ABH, the thin section of the taper is also exposed to high amplitude vibrations and this raises concerns relating to the vibration fatigue of the structure. This paper presents a numerical simulation based investigation into the fatigue life of an ABH taper used to terminate a beam. In particular, the effect of the power law used in the taper profile on the fatigue life is investigated and the potential trade-off between performance and fatigue life is explored.
Keys, Archie
be052521-bf0f-40c7-8e30-50deba927618
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
24 July 2022
Keys, Archie
be052521-bf0f-40c7-8e30-50deba927618
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Keys, Archie and Cheer, Jordan
(2022)
Fatigue analysis of acoustic black holes.
In Proceedings of the 28th International Congress on Sound and Vibration.
8 pp
.
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Conference or Workshop Item
(Paper)
Abstract
Acoustic black holes (ABHs) are realised via modifications to a structure that effectively reduce the structural wave speed, which increases the effect of damping treatments and thus enhances the achievable vibration attenuation. ABHs are commonly designed using a tapering thickness profile and this leads to part of the ABH being very thin. Due to the focusing effect of the ABH, the thin section of the taper is also exposed to high amplitude vibrations and this raises concerns relating to the vibration fatigue of the structure. This paper presents a numerical simulation based investigation into the fatigue life of an ABH taper used to terminate a beam. In particular, the effect of the power law used in the taper profile on the fatigue life is investigated and the potential trade-off between performance and fatigue life is explored.
Text
FATIGUE ANALYSIS OF AN ACOUSTIC BLACK HOLE
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Published date: 24 July 2022
Venue - Dates:
28th International Congress on Sound and Vibration : ICSV 28, , Singapore, Unknown, 2022-07-24 - 2022-07-28
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Local EPrints ID: 470913
URI: http://eprints.soton.ac.uk/id/eprint/470913
PURE UUID: ea01960b-2dc2-4eda-9a29-6a1e51271d74
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Date deposited: 20 Oct 2022 16:53
Last modified: 17 Mar 2024 03:23
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Author:
Archie Keys
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