Probabilistic Rotor Life Assessment Using Reduced Order Models
Probabilistic failure assessments for integrally bladed disks are system reliability problems where a failure in at least one blade constitutes a rotor system failure. Turbine engine fan and compressor blade life is dominated by High Cycle Fatigue (HCF) initiated either by pure HCF or Foreign Object...
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| Format: | Article |
| Language: | English |
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Wiley
2009-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.3233/SAV-2009-0490 |
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| _version_ | 1850166572063129600 |
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| author | Brian K. Beachkofski |
| author_facet | Brian K. Beachkofski |
| author_sort | Brian K. Beachkofski |
| collection | DOAJ |
| description | Probabilistic failure assessments for integrally bladed disks are system reliability problems where a failure in at least one blade constitutes a rotor system failure. Turbine engine fan and compressor blade life is dominated by High Cycle Fatigue (HCF) initiated either by pure HCF or Foreign Object Damage (FOD). To date performing an HCF life assessment for the entire rotor system has been too costly in analysis time to be practical. Although the substantial run-time has previously precluded a full-rotor probabilistic analysis, reduced order models make this process tractable as demonstrated in this work. The system model includes frequency prediction, modal stress variation, mistuning amplification, FOD effect, and random material capability. The model has many random variables which are most easily handled through simple random sampling. |
| format | Article |
| id | doaj-art-e3bd11819d4d4a6790cd943f80b7dc3b |
| institution | OA Journals |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2009-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-e3bd11819d4d4a6790cd943f80b7dc3b2025-08-20T02:21:24ZengWileyShock and Vibration1070-96221875-92032009-01-0116658159110.3233/SAV-2009-0490Probabilistic Rotor Life Assessment Using Reduced Order ModelsBrian K. Beachkofski0Air Force Research Laboratory, Propulsion Directorate, 1950 5th Street, Wright-Patterson AFB, OH 45433, USAProbabilistic failure assessments for integrally bladed disks are system reliability problems where a failure in at least one blade constitutes a rotor system failure. Turbine engine fan and compressor blade life is dominated by High Cycle Fatigue (HCF) initiated either by pure HCF or Foreign Object Damage (FOD). To date performing an HCF life assessment for the entire rotor system has been too costly in analysis time to be practical. Although the substantial run-time has previously precluded a full-rotor probabilistic analysis, reduced order models make this process tractable as demonstrated in this work. The system model includes frequency prediction, modal stress variation, mistuning amplification, FOD effect, and random material capability. The model has many random variables which are most easily handled through simple random sampling.http://dx.doi.org/10.3233/SAV-2009-0490 |
| spellingShingle | Brian K. Beachkofski Probabilistic Rotor Life Assessment Using Reduced Order Models Shock and Vibration |
| title | Probabilistic Rotor Life Assessment Using Reduced Order Models |
| title_full | Probabilistic Rotor Life Assessment Using Reduced Order Models |
| title_fullStr | Probabilistic Rotor Life Assessment Using Reduced Order Models |
| title_full_unstemmed | Probabilistic Rotor Life Assessment Using Reduced Order Models |
| title_short | Probabilistic Rotor Life Assessment Using Reduced Order Models |
| title_sort | probabilistic rotor life assessment using reduced order models |
| url | http://dx.doi.org/10.3233/SAV-2009-0490 |
| work_keys_str_mv | AT briankbeachkofski probabilisticrotorlifeassessmentusingreducedordermodels |