Feb 17, 2010

PhD position: Phd in symmetry, reduction and stability of mechanical systems at Ghent University, Belgium

Description of the project:

The role that symmetry properties of a dynamical system play in its reduction to a (possibly) simpler system, and in the stability properties of certain of its solutions, is an important field of research. Whereas this topic has already been extensively dealt with in the case of Hamiltonian systems in a symplectic or, more generally, a Poisson context, the Lagrangian side of the story has always received
much less attention in the literature.

The goal of this project therefore is to restore this balance in some sense by analyzing symmetry and reduction aspects in the context of Lagrangian dynamical systems. In particular, attention will be focused on so-called Routh reduction and Routh reduction by stages for invariant and quasi-invariant Lagrangian systems. The techniques will be illustrated on some concrete mechanical systems such as, for instance, a rigid body submerged in a fluid. The stability of relative equilibria
will also be investigated in a Lagrangian setting. Finally, the extent to which the symmetry and reduction techniques for Lagrangian and Hamiltonian systems can be modified or generalized in order to apply them to systems with non-holonomic constraints and to (non-Lagrangian) systems with dissipation, will also be investigated.

Promotor: Frans Cantrijn (Frans.Cantrijn[ at]UGent. be )
Co-promotor: Bavo Langerock (Bavo.Langerock[ at]UGent. be)

Last application date: 2010-07-05 17:00

http://www.ugent. be/en/news/ vacancies/ scientific/ fc

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