Search

Your search keyword '"modal matching"' showing total 2 results
Start Over Descriptor "modal matching" Topic modal assurance criterion
2 results on '"modal matching"'

1. Aeroelastic scaling of flying demonstrators: mode tracking technique.

Author

Mas Colomer, Joan, Bartoli, Nathalie, Lefebvre, Thierry, and Morlier, Joseph

Subjects
*MODE shapes, *FLEXIBLE structures, *AIR flow
Abstract

Aeroelastic scaling theory shows that the design problem of aeroelastically equivalent scaled aircraft can be treated as a structural-only design problem if the aerodynamic shape and airflow properties of the full scale aircraft are preserved. In that case, the theory shows that it is sufficient to match the scaled natural mode shapes, frequencies and mass of the reference aircraft. In this paper, we present a new method for the dynamic scaling of flexible structures where the objective function is based on the modal assurance criterion (MAC). This criterion is used for a mode tracking strategy during the optimization process. Finally, we apply this method to a scaled version (1:5) of the uCRM wing, achieving an agreement greater than 99% on the average MAC value of the first 5 modes. [ABSTRACT FROM AUTHOR]

Published
2022
Full Text
View/download PDF

2. Aeroelastic scaling of flying demonstrators: mode tracking technique

Author

Joan Mas Colomer, Nathalie Bartoli, Thierry Lefebvre, Joseph Morlier, Centre National de la Recherche Scientifique - CNRS (FRANCE), Ecole nationale supérieure des Mines d'Albi-Carmaux - IMT Mines Albi (FRANCE), Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE), Institut Supérieur de l'Aéronautique et de l'Espace - ISAE-SUPAERO (FRANCE), Office National d'Etudes et Recherches Aérospatiales - ONERA (FRANCE), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Département de Mécanique des Structures et Matériaux - DMSM (Toulouse, France), Institut Clément Ader (ICA), Institut Supérieur de l'Aéronautique et de l'Espace (ISAE-SUPAERO)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Université Toulouse III - Paul Sabatier (UT3), Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS)-IMT École nationale supérieure des Mines d'Albi-Carmaux (IMT Mines Albi), Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), ONERA / DTIS, Université de Toulouse [Toulouse], and ONERA-PRES Université de Toulouse

Subjects
modal matching, Optimization, Mechanical Engineering, aeroelastic scaling, Modal assurance criterion, Industrial and Manufacturing Engineering, [SPI]Engineering Sciences [physics], Mécanique des structures, modal assurance criterion, TA401-492, General Materials Science, Modal matching, optimization, Materials of engineering and construction. Mechanics of materials, Aeroelastic scaling
Abstract

International audience; Aeroelastic scaling theory shows that the design problem of aeroelastically equivalent scaled aircraft can be treated as a structural-only design problem if the aerodynamic shape and airflow properties of the full scale aircraft are preserved. In that case, the theory shows that it is sufficient to match the scaled natural mode shapes, frequencies and mass of the reference aircraft. In this paper, we present a new method for the dynamic scaling of flexible structures where the objective function is based on the modal assurance criterion (MAC). This criterion is used for a mode tracking strategy during the optimization process. Finally, we apply this method to a scaled version (1:5) of the uCRM wing, achieving an agreement greater than 99% on the average MAC value of the first 5 modes.

Published
2022
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results