Abstract
We consider the dynamics of the first vibrational mode of a suspension bridge, resulting from the coupling between its roadbed (elastic beam) and the hangers, supposed to be one-sided springs which respond only to stretching. The external forcing is due to time-periodic vortices produced by impinging wind on the bridge structure. We have studied some relevant dynamical phenomena in such a system, like periodic and quasiperiodic responses, chaotic motion, and boundary crises. In the weak dissipative limit the dynamics is mainly multistable, presenting a variety of coexisting attractors, both periodic and chaotic, with a highly involved basin of attraction structure.
Original language | English |
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Pages (from-to) | 927-950 |
Number of pages | 23 |
Journal | International Journal of Bifurcation and Chaos |
Volume | 14 |
Publication status | Published - 2004 |
Keywords
- multistability
- chaos
- basin boundaries
- suspension bridge
- NONLINEAR DYNAMICS
- GRAZING BIFURCATIONS
- PERIODIC ATTRACTORS
- IMPACT OSCILLATOR
- LINEAR-OSCILLATOR
- SYSTEMS
- MAP