Relating independent components to free-vibration modal responses

Article type: Research Article

Authors: McNeill, S.I. | Zimmerman, D.C.

Affiliations: Stress Engineering Services, Inc., 13800 Westfair East Drive, Houston, TX, USA | Department of Mechanical Engineering, University of Houston, 4800 Calhoun Rd., Houston, TX, USA

Note: [] Corresponding author. E-mail: scot.mcneill@stress.com

Abstract: In recent literature, attempts have been made to apply Independent Component Analysis (ICA) techniques to the modal identification problem. Paramount to this task is establishing a relationship between the source components realized using the suggested ICA technique and modal responses. In this paper, the relationship between independent components and free-vibration modal responses is discussed. Theoretical arguments are presented for responses of undamped systems and arguments are extended to damped responses.

Keywords: Blind source separation, independent component analysis, hebbian learning, output only modal identification, non-parametric identification

DOI: 10.3233/SAV-2010-0504

Journal: Shock and Vibration, vol. 17, no. 2, pp. 161-170, 2010