Fatigue assessment of amplitude-modulated non-stationary random vibration loading
- Designing mechanical structures exposed to random vibration loading compromises the central challenges of defining comprehensive load assumptions and of processing these efficiently in a fatigue assessment. For this matter of statistical load description, frequency-domain methods withhold major advantages. They describe random vibration loading by its power spectral density, which allows drastic data reduction, to conduct efficient response analyses and to derive a statistical description of resulting load spectra. Nevertheless, this procedure is limited to stationary Gaussian loading. Thus, this paper proposes an extension of the frequency-domain approach to a special class of non-stationary loading – amplitude-modulated processes. These consist of a unique vibration state that varies in intensity, which is represented by a modulating signal. This paper develops a methodology to test for amplitude-modulated processes, to derive efficient measures for the intensity variation and to include this behavior in a fatigue assessment carried out in frequency-domain. The full methodology is presented via a set of simulated data.
Author: | Arvid TrappORCiD, Mafake James Makua, Peter WolfsteinerORCiD |
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URN: | urn:nbn:de:bvb:m347-opus-2346 |
DOI: | https://doi.org/10.1016/j.prostr.2019.08.050 |
Parent Title (English): | Procedia Structural Integrity |
Publisher: | Elsevier B.V. |
Document Type: | Article |
Language: | English |
Date of Publication (online): | 2022/01/11 |
Year of first Publication: | 2019 |
Publishing Institution: | Hochschule für angewandte Wissenschaften München |
Contributing Corporation: | ICSI 2019 The 3rd International Conference on Structural Integrity |
Release Date: | 2022/01/11 |
GND Keyword: | MaterialermüdungGND; SonogrammGND |
Page Number: | 8 |
First Page: | 379 |
Last Page: | 386 |
Note: | Sonderdruck aus: Procedia Structural Integrity 17(2019), S. 379–386 |
Departments and Institutes: | Fakultäten der Hochschule München / FK 03 Fakultät für Maschinenbau, Fahrzeugtechnik, Flugzeugtechnik |
Dewey Decimal Classification: | 6 Technik, Medizin, angewandte Wissenschaften / 60 Technik |
Illustrations: | grafische Darstellung/en |
Licence (German): | Creative Commons - CC BY-NC-ND - Namensnennung - Nicht kommerziell - Keine Bearbeitungen 4.0 International |