2004 IRISH SCIENTIST YEAR BOOK

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Andrew Harkin & Thomas Connor

Biswajit Basu
Structural Dynamics and Vibrations Research Group, TCD
The Structural Dynamics and Vibrations Research Group, based in the Department of Civil, Structural and Environmental Engineering, Trinity College Dublin, is very active in five major research areas: wind turbine structures and wind engineering; earthquake engineering; vibration control; soil-structure interaction; and railway and bridge dynamics. The group has interests in several diverse interdisciplinary areas supported by ten post-graduate research students. It has received research funding from the European Union, Enterprise Ireland, Irish Research Council for Science, Engineering and Technology, and Iarnr�d �ireann.


Research being carried by a member of the Structural Dynamics and Vibrations Research Group,TCD

Some of the research projects currently undertaken in wind turbine structures and wind engineering include semiactive tuned mass vibration controllers for wind turbine towers, development of active magnetorheological fluids for vibration control of off-shore wind turbines, experimental and theoretical studies of the dynamics of tower-blade coupling, centrifugal stiffening of the blades, and development of a gust factor approach for wind turbine towers. Research projects on vibration control involve: passive tuned liquid dampers, optimal location of dampers on continuum structures, wavelet analysis based system identification and robust control strategies. Research in earthquake engineering focuses on the behaviour and the design of steel and composite structures. Recent projects have investigated the seismic response of braced frames and semi-rigid connections. Another project in earthquake engineering investigates different retrofitting options and the consequent reliability enhancement.

Soil-structure interaction research includes ground borne vibrations due to tunnel boring and the response of beams partially embedded in elastic foundations. Railway and bridge dynamics research concentrates on the dynamic response of railway bridges due to rolling stock; and the reliability and health monitoring of bridges under vehicular loading.

Much of the above research is carried out in a dedicated dynamics and vibration research laboratory, where facilities for impact testing, cyclic dynamic loadings (sinusoidal and random), actuators for base excitations, advanced data acquisition system, and vibration control facilities, exist for research purposes.

The group has several active research members � including Dr Biswajit Basu, Dr Brian Broderick, Dr Alan O'Connor, Dr Dermot O'Dwyer and Dr Roger West.


Contact: Dr Biswajit Basu, Department of Civil, Structural and Environmental Engineering, Trinity College, Dublin 2;
Tel: +353-1-6082389; E-mail: [email protected]