Harmonic Transfer Function Based Damage Identification of Breathing Cracked Jeffcott Rotor
This paper proposes a vibration-based damage identification method based on 6-dof Jeffcott rotor system, which is based on harmonic balance and Newton-Raphson methods. First, the equations of motion are derived by using energy method and Lagrange principle. The crack model is based on strain energy...
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| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2016-01-01
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| Series: | Shock and Vibration |
| Online Access: | http://dx.doi.org/10.1155/2016/4056236 |
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| _version_ | 1849690379657412608 |
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| author | Jie Zhao Hans DeSmidt Meng Peng |
| author_facet | Jie Zhao Hans DeSmidt Meng Peng |
| author_sort | Jie Zhao |
| collection | DOAJ |
| description | This paper proposes a vibration-based damage identification method based on 6-dof Jeffcott rotor system, which is based on harmonic balance and Newton-Raphson methods. First, the equations of motion are derived by using energy method and Lagrange principle. The crack model is based on strain energy release rate (SERR) in fracture mechanics and modified to accommodate 6-dof Jeffcott rotor model. Then, Gear’s method is used to solve the vibration responses of nominal and damaged rotor systems. By processing vibration responses, the transfer function shifts between nominal and damaged systems are taken as the input of damage identification algorithm. Finally, damage severity can be correlated with the damage parameter estimated via developed damage identification model. Numerical examples are shown to demonstrate the effectiveness in identifying the breathing crack in the rotor system. |
| format | Article |
| id | doaj-art-ebba2e285a254e59a6d20a1e1cef0b9f |
| institution | DOAJ |
| issn | 1070-9622 1875-9203 |
| language | English |
| publishDate | 2016-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Shock and Vibration |
| spelling | doaj-art-ebba2e285a254e59a6d20a1e1cef0b9f2025-08-20T03:21:19ZengWileyShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/40562364056236Harmonic Transfer Function Based Damage Identification of Breathing Cracked Jeffcott RotorJie Zhao0Hans DeSmidt1Meng Peng2The University of Tennessee, Knoxville, TN 37996, USAThe University of Tennessee, Knoxville, TN 37996, USAThe University of Tennessee, Knoxville, TN 37996, USAThis paper proposes a vibration-based damage identification method based on 6-dof Jeffcott rotor system, which is based on harmonic balance and Newton-Raphson methods. First, the equations of motion are derived by using energy method and Lagrange principle. The crack model is based on strain energy release rate (SERR) in fracture mechanics and modified to accommodate 6-dof Jeffcott rotor model. Then, Gear’s method is used to solve the vibration responses of nominal and damaged rotor systems. By processing vibration responses, the transfer function shifts between nominal and damaged systems are taken as the input of damage identification algorithm. Finally, damage severity can be correlated with the damage parameter estimated via developed damage identification model. Numerical examples are shown to demonstrate the effectiveness in identifying the breathing crack in the rotor system.http://dx.doi.org/10.1155/2016/4056236 |
| spellingShingle | Jie Zhao Hans DeSmidt Meng Peng Harmonic Transfer Function Based Damage Identification of Breathing Cracked Jeffcott Rotor Shock and Vibration |
| title | Harmonic Transfer Function Based Damage Identification of Breathing Cracked Jeffcott Rotor |
| title_full | Harmonic Transfer Function Based Damage Identification of Breathing Cracked Jeffcott Rotor |
| title_fullStr | Harmonic Transfer Function Based Damage Identification of Breathing Cracked Jeffcott Rotor |
| title_full_unstemmed | Harmonic Transfer Function Based Damage Identification of Breathing Cracked Jeffcott Rotor |
| title_short | Harmonic Transfer Function Based Damage Identification of Breathing Cracked Jeffcott Rotor |
| title_sort | harmonic transfer function based damage identification of breathing cracked jeffcott rotor |
| url | http://dx.doi.org/10.1155/2016/4056236 |
| work_keys_str_mv | AT jiezhao harmonictransferfunctionbaseddamageidentificationofbreathingcrackedjeffcottrotor AT hansdesmidt harmonictransferfunctionbaseddamageidentificationofbreathingcrackedjeffcottrotor AT mengpeng harmonictransferfunctionbaseddamageidentificationofbreathingcrackedjeffcottrotor |