IMPLEMENTATION OF THE HARMONIC VARIABLES CONCEPT IN THE VIBRATION ANALYSIS OF A COUPLED ROTOR FUSELAGE SYSTEM/

Authors
Citation
Sm. Barkai et O. Rand, IMPLEMENTATION OF THE HARMONIC VARIABLES CONCEPT IN THE VIBRATION ANALYSIS OF A COUPLED ROTOR FUSELAGE SYSTEM/, Computers & mathematics with applications, 30(9), 1995, pp. 87-104
Citations number
18
Categorie Soggetti
Computer Sciences",Mathematics,"Computer Science Interdisciplinary Applications
ISSN journal
08981221
Volume
30
Issue
9
Year of publication
1995
Pages
87 - 104
Database
ISI
SICI code
0898-1221(1995)30:9<87:IOTHVC>2.0.ZU;2-#
Abstract
The paper presents a new numerical technique for deriving and solving the nonlinear periodic equations of motion of a coupled rotor/fuselage system. The method is based on the combination of the concept of work ing with ''Harmonic Variables'' with general purpose nonlinear solvers . The resulting technique substantially reduces the required analytica l effort while preserving high accuracy solution and symbolic harmonic resolution. For demonstration purposes, the present nonlinear modelli ng consists of elastic blades and fuselage, and contains nonlinear ela stic and dynamic contributions. The method is demonstrated by a study of the influence of possible fuselage responsiveness on the vibratory hub motion and hub loads.