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A new model for the study of rain-wind-induced vibrations of a simple oscillator |
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| Authors: | A.H.P. van der Burgh Hartono A.K. Abramian |
| Affiliation: | a Department of Applied Mathematics, Faculty of Electrical Engineering, Mathematics and Computer Science, Delft University of Technology, Mekelweg 4, 2628 CD Delft, The Netherlands b Institute of Problems of Mechanical Engineering, Russian Academy of Sciences, V.O. Bolshoy pr. 61, St. Petersburg, Russia |
| Abstract: | In this paper, a model equation is presented for the study of rain-wind-induced vibrations of a simple oscillator. As will be shown the presence of raindrops in the wind-field may have an essential influence on the dynamic stability of the oscillator. In this model equation the influence of the variation of the mass of the oscillator due to an incoming flow of raindrops hitting the oscillator and a mass flow which is blown and shaken off is investigated. The time-varying mass is modeled by a time harmonic function whereas simultaneously also time-varying lift and drag forces are considered. |
| Keywords: | Rain-wind-induced vibrations Variation of the mass of the rain water Cable stayed bridges Bifurcation analysis |
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