Physics – Classical Physics
Scientific paper
2008-01-19
European Journal of Mechanics - A/Solids / European Journal of Mechanics - A/Solids 24, 4 (2005) 676-689
Physics
Classical Physics
Scientific paper
10.1016/j.euromechsol.2005.01.00
The invariant manifold approach is used to explore the dynamics of a nonlinear rotor, by determining the nonlinear normal modes, constructing a reduced order model and evaluating its performance in the case of response to an initial condition. The procedure to determine the approximation of the invariant manifolds is discussed and a strategy to retain the speed dependent effects on the manifolds without solving the eigenvalue problem for each spin speed is presented. The performance of the reduced system is analysed in function of the spin speed.
Sinou Jean-Jacques
Thouverez Fabrice
Villa Cristiano
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