[Univ of Cambridge] [Dept of Engineering]

  Flutter:  simulation and experimental measurement

Bianca Thimm


The dynamic effects of wind-structure interaction have become increasingly important in recent times for suspension bridges due to their ever-increasing span lengths.

This thesis involves the computational simulation and experimental measurement of flutter variables for comparison against flutter theory.

Through literature review it is ascertained that flat plate flutter theory is increasingly applicable to modern day streamlined bridge deck sections.  The Theodorsen theory for streamlined bodies is solved for a flat plate that is investigated experimentally within a wind tunnel.  The critical flutter velocity and structural motions are identified from structural vibration measurement and are compared against those predicted by Theodorsen.

The flow around the deck is investigated using helium-bubble flow visualisation for determination of wake characteristics.


[Cambridge University | CUED | Structures Group | Geotechnical Group]

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