The dynamics of wind-induced oscillations of bluff bodies
Abstract
The investigation of the dynamic capabilities of the Iwan-Blevins model prediction wake-vortex induced oscillation of bluff bodies using Hopf bifuraction theory is described. Bifuraction, stability, direction of bifurcation, periodic orbits and response diagrams were obtained and classified. Comparison was made with the experimental data of Feng. The experimentally observed double amplitude response for an elastically mounted cylinder vibrating in the transverse direction are predicted and explained. Prediction of the model and experimental results agree within the range of experimental data scatter.
- Publication:
-
Ph.D. Thesis
- Pub Date:
- 1981
- Bibcode:
- 1981PhDT........30A
- Keywords:
-
- Bluff Bodies;
- Branching (Mathematics);
- Mathematical Models;
- Oscillations;
- Wind Effects;
- Dynamic Models;
- Periodic Functions;
- Vortices;
- Wakes;
- Engineering (General)