Fatigue life from sine-on-random excitations
Fatigue life from sine-on-random excitations
This presentation concentrates on calculating the high cycle fatigue life from sine-on-random excitations. A spectral domain approach offers advantages over the time domain approach when computation times are prohibitive.
The proposed approach is to derive the statistical rainflow cycle histogram from a sine-on-random spectrum of stress data and then to use the appropriate material fatigue curve to obtain the estimated life.
A case study illustrates the application of the method on a component attached to a helicopter. Comparisons with traditional time-domain approaches are presented and show excellent agreement.
random, sine-on-random, fatigue, damage, rainflow cycle count
235-242
Kihm, F.
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Halfpenny, A.
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Ferguson, N.S.
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Kihm, F.
7ab79603-1ba0-4785-ba2c-3f2a3dbc91a0
Halfpenny, A.
a7c02de9-8175-400a-97e3-4f40817c7cf2
Ferguson, N.S.
8cb67e30-48e2-491c-9390-d444fa786ac8
Kihm, F., Halfpenny, A. and Ferguson, N.S.
(2015)
Fatigue life from sine-on-random excitations.
Procedia Engineering, 101, .
(doi:10.1016/j.proeng.2015.02.033).
Abstract
This presentation concentrates on calculating the high cycle fatigue life from sine-on-random excitations. A spectral domain approach offers advantages over the time domain approach when computation times are prohibitive.
The proposed approach is to derive the statistical rainflow cycle histogram from a sine-on-random spectrum of stress data and then to use the appropriate material fatigue curve to obtain the estimated life.
A case study illustrates the application of the method on a component attached to a helicopter. Comparisons with traditional time-domain approaches are presented and show excellent agreement.
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e-pub ahead of print date: 20 March 2015
Additional Information:
3rd International Conference on Material and Component Performance under Variable Amplitude Loading, VAL 2015
Keywords:
random, sine-on-random, fatigue, damage, rainflow cycle count
Organisations:
Dynamics Group
Identifiers
Local EPrints ID: 377006
URI: http://eprints.soton.ac.uk/id/eprint/377006
PURE UUID: b7c70986-46c5-4e6b-887a-ba0435ba77ea
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Date deposited: 18 May 2015 12:31
Last modified: 15 Mar 2024 02:34
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Author:
F. Kihm
Author:
A. Halfpenny
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