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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Representation and analysis of control surface freeplay nonlinearity

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Author(s):
Vasconcellos, R. [1] ; Abdelkefi, A. [2] ; Marques, F. D. [1] ; Hajj, M. R. [2]
Total Authors: 4
Affiliation:
[1] Univ Sao Paulo, Lab Aeroelast, Sao Carlos, SP - Brazil
[2] Virginia Polytech Inst & State Univ, Dept Engn Sci & Mech, Blacksburg, VA 24061 - USA
Total Affiliations: 2
Document type: Journal article
Source: JOURNAL OF FLUIDS AND STRUCTURES; v. 31, p. 79-91, MAY 2012.
Web of Science Citations: 32
Abstract

Different representations for a control surface freeplay nonlinearity in a three degree of freedom aeroelastic system are assessed. These are the discontinuous, polynomial and hyperbolic tangent representations. The Duhamel formulation is used to model the aerodynamic loads. Assessment of the validity of these representations is performed through comparison with previous experimental observations. The results show that the instability and nonlinear response characteristics are accurately predicted when using the discontinuous and hyperbolic tangent representations. On the other hand, the polynomial representation fails to predict chaotic motions observed in the experiments. (c) 2012 Elsevier Ltd. All rights reserved. (AU)

FAPESP's process: 07/08459-1 - Nonlinear aeroelastic time series analysis: an experimental study
Grantee:Rui Marcos Grombone de Vasconcellos
Support Opportunities: Scholarships in Brazil - Doctorate