Exact Model Reduction for Damped-Forced Nonlinear Beams: An Infinite-Dimensional Analysis
Mathematical Physics
2018-03-14 v1 math.MP
Abstract
We use invariant manifold results on Banach spaces to conclude the existence of spectral submanifolds (SSMs) in a class of nonlinear, externally forced beam oscillations. SSMs are the smoothest nonlinear extensions of spectral subspaces of the linearized beam equation. Reduction of the governing PDE to SSMs provides an explicit low-dimensional model which captures the correct asymptotics of the full, infinite-dimensional dynamics. Our approach is general enough to admit extensions to other types of continuum vibrations. The model-reduction procedure we employ also gives guidelines for a mathematically self-consistent modeling of damping in PDEs describing structural vibrations.
Cite
@article{arxiv.1705.06133,
title = {Exact Model Reduction for Damped-Forced Nonlinear Beams: An Infinite-Dimensional Analysis},
author = {Florian Kogelbauer and George Haller},
journal= {arXiv preprint arXiv:1705.06133},
year = {2018}
}