High-resolution modal analysis

Kerem Ege (1) , Xavier Boutillon (1) , Bertrand David (2)

1 LMS - Laboratoire de mécanique des solides
2 LTCI - Laboratoire Traitement et Communication de l'Information

Usual modal analysis techniques are based on the Fourier transform. Due to the Delta T .Delta f limitation, they perform poorly when the modal overlap mu exceeds 30%. A technique based on a high-resolution analysis algorithm and an order-detection method is presented here, with the aim of filling the gap between the low- and the high-frequency domains (30%

Mots clés: ROTATIONAL INVARIANCE TECHNIQUES; MATRIX PENCIL METHOD; PLATES; FREQUENCIES; PARAMETERS; VIBRATIONS; PANELS

Domaines: Vibrations [physics.class-ph]; Vibrations [physics.class-ph]

Kerem Ege, Xavier Boutillon, Bertrand David. High-resolution modal analysis. Journal of Sound and Vibration, 2009, 325 (4-5), pp.852-869. ⟨10.1016/j.jsv.2009.04.019⟩. ⟨hal-00413250v1⟩