Reduced-Order Model Development for Airfoil Forced Response
Two new reduced-order models are developed to accurately and rapidly predict geometry deviation effects on airfoil forced response. Both models have significant application to improved mistuning analysis. The first developed model integrates a principal component analysis approach to reduce the numb...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
Wiley
2008-01-01
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| Series: | International Journal of Rotating Machinery |
| Online Access: | http://dx.doi.org/10.1155/2008/387828 |
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| _version_ | 1850225141214085120 |
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| author | Jeffrey M. Brown Ramana V. Grandhi |
| author_facet | Jeffrey M. Brown Ramana V. Grandhi |
| author_sort | Jeffrey M. Brown |
| collection | DOAJ |
| description | Two new reduced-order models are developed to accurately and rapidly predict geometry
deviation effects on airfoil forced response. Both models have significant application to improved
mistuning analysis. The first developed model integrates a principal component analysis
approach to reduce the number of defining geometric parameters, semianalytic eigensensitivity
analysis, and first-order Taylor series approximation to allow rapid as-measured airfoil
response analysis. A second developed model extends this approach and quantifies both random
and bias errors between the reduced and full models. Adjusting for the bias significantly
improves reduced-order model accuracy. The error model is developed from a regression analysis
of the relationship between airfoil geometry parameters and reduced-order model error,
leading to physics-based error quantification. Both models are demonstrated on an advanced
fan airfoil's frequency, modal force, and forced response. |
| format | Article |
| id | doaj-art-5afee7b084a84cc8ab9fa38aeb5b4acf |
| institution | OA Journals |
| issn | 1023-621X 1542-3034 |
| language | English |
| publishDate | 2008-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Rotating Machinery |
| spelling | doaj-art-5afee7b084a84cc8ab9fa38aeb5b4acf2025-08-20T02:05:28ZengWileyInternational Journal of Rotating Machinery1023-621X1542-30342008-01-01200810.1155/2008/387828387828Reduced-Order Model Development for Airfoil Forced ResponseJeffrey M. Brown0Ramana V. Grandhi1Turbine Engine Division, US Air Force Research Lab/RZTS, 1950 5th Street, Building 18, Wright-Patterson AFB, OH 45433, USADepartment of Mechanical and Materials Engineering, Wright State University, 3640 Colonel Gelnn Hwy, Dayton, OH 45435, USATwo new reduced-order models are developed to accurately and rapidly predict geometry deviation effects on airfoil forced response. Both models have significant application to improved mistuning analysis. The first developed model integrates a principal component analysis approach to reduce the number of defining geometric parameters, semianalytic eigensensitivity analysis, and first-order Taylor series approximation to allow rapid as-measured airfoil response analysis. A second developed model extends this approach and quantifies both random and bias errors between the reduced and full models. Adjusting for the bias significantly improves reduced-order model accuracy. The error model is developed from a regression analysis of the relationship between airfoil geometry parameters and reduced-order model error, leading to physics-based error quantification. Both models are demonstrated on an advanced fan airfoil's frequency, modal force, and forced response.http://dx.doi.org/10.1155/2008/387828 |
| spellingShingle | Jeffrey M. Brown Ramana V. Grandhi Reduced-Order Model Development for Airfoil Forced Response International Journal of Rotating Machinery |
| title | Reduced-Order Model Development for Airfoil Forced Response |
| title_full | Reduced-Order Model Development for Airfoil Forced Response |
| title_fullStr | Reduced-Order Model Development for Airfoil Forced Response |
| title_full_unstemmed | Reduced-Order Model Development for Airfoil Forced Response |
| title_short | Reduced-Order Model Development for Airfoil Forced Response |
| title_sort | reduced order model development for airfoil forced response |
| url | http://dx.doi.org/10.1155/2008/387828 |
| work_keys_str_mv | AT jeffreymbrown reducedordermodeldevelopmentforairfoilforcedresponse AT ramanavgrandhi reducedordermodeldevelopmentforairfoilforcedresponse |