Consistent structural linearisation in flexible-body dynamics with large rigid-body motion

Hesse, H. and Palacios, R. (2012) Consistent structural linearisation in flexible-body dynamics with large rigid-body motion. Computers and Structures, 110-11, pp. 1-14. (doi:10.1016/j.compstruc.2012.05.011)

Hesse, H. and Palacios, R. (2012) Consistent structural linearisation in flexible-body dynamics with large rigid-body motion. Computers and Structures, 110-11, pp. 1-14. (doi:10.1016/j.compstruc.2012.05.011)

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Abstract

A consistent linearisation, using perturbation methods, is obtained for the structural degrees of freedom of flexible slender bodies with large rigid-body motions. The resulting system preserves all couplings between rigid and elastic motions and can be projected onto a few vibration modes of a reference configuration. This gives equations of motion with cubic terms in the rigid-body degrees of freedom and constant coefficients which can be pre-computed prior to the time-marching simulation. Numerical results are presented to illustrate the approach and to show its advantages with respect to mean-axes approximations.

Item Type:Articles
Keywords:Flexible-body dynamics, geometrically-nonlinear beam modeling, mean axes, vibration modes.
Status:Published
Refereed:Yes
Glasgow Author(s) Enlighten ID:Hesse, Dr Henrik
Authors: Hesse, H., and Palacios, R.
College/School:College of Science and Engineering > School of Engineering > Aerospace Sciences
Journal Name:Computers and Structures
Publisher:Elsevier
ISSN:0045-7949
ISSN (Online):1879-2243
Published Online:04 July 2012

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