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Department of Mechanical Engineering |
My research interests are based on the dynamics and control of structural and mechanical engineering systems. I am particularly interested in nonlinear structural dynamics. I am also the head of the Dynamics and Control Research Group. Current research includes work on nonlinear modal analysis for vibration problems, and the dynamics and control of morphing structures. I am also working on other aspects of smart structures including active and semi-active vibration control. Most of my research includes experimental testing and, in particular I have been involved in new developments of hybrid testing such as hardware-in-the-loop and real-time dynamic substructuring. This has particularly useful application in testing for large structures, such as bridges, and other seismically excited structures. Further details on all these topics can be found on the Dynamics and Control Research Group website.
Recent research highlights:
-A Colloquium on Structural Control and Energy Harvesting took place in Bristol from 25-27 July 2011.
-A lecture course on Exploiting Nonlinear Behaviour in Structural Dynamics took place 13-17 September, 2010, hosted by
the International Centre for Mechanical Sciences.
-A new book called Nonlinear Vibration with Control
is available from Amazon now.
-Work on controlling spinning pendulum motions using experimental continuation was reported in
Physical Review Focus.
-I organised a workshop on adaptive structures, which took place in Bristol in July 2006. The proceedings are
available from Amazon now.
-From 2004-2009 I was as EPSRC Advanced Research Fellow on the
dynamics and control of hybrid systems with applications to real-time
dynamic substructuring. Details of all my
EPSRC grants can be found here.
Funded PhD opportunities are often available and I am always interested to hear from potential PhD students. You will need a first class (or equivalent) degree in engineering or a related subject such as Mathematics or Physics. Post-doctoral opportunities are usually advertised on http://www.jobs.ac.uk/. I'm am also happy to consider applications for short visits (typically up to one year) such as those funded by the China Scholarship Council.
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Neild SA and Wagg DJ (2011) Applying the method of normal forms to second-order nonlinear vibration problems. Proceedings of the Royal Society of London A. 467, 1141-1163.
Potter JN, Neild SA, Wagg DJ (2010) Generalisation and optimisation of semi-active, on-off switching controllers for single degree-of-freedom systems. Journal of Sound and Vibration. 329, 2450-2462.
Arrieta AF, Wagg DJ and Neild SA (2009) Nonlinear dynamics of a bi-stable composite laminate plate with applications to adaptive structures. Nonlinear Dynamics 58, 259-272.
Gawthrop PJ, Virden DW, Neild SA and Wagg DJ (2008) Emulator-based control for actuator-based hardware-in-the-loop testing. Control Engineering Practice 16(8), 897-908.
Sieber J, Gonzalez-Buelga A, Neild SA, Wagg DJ and Krauskopf B (2008) Experimental continuation of periodic orbits through a fold. Physical Review Letters 100, 244101.
Gonzalez-Buelga, A, Wagg DJ and Neild SA (2007) Parametric variation of a coupled pendulum-oscillator system using real-time dynamic substructuring. Structural Control and Health Monitoring. 14(7), 991-1012.
Wallace MI, Sieber J, Neild SA, Wagg DJ and Krauskopf B (2005) Stability analysis of real-time dynamic substructuring using delay differential equation models. Earthquake Engineering and Structural Dynamics 34(15), 1817-1832.
Wallace MI, Wagg DJ and Neild SA (2005) An adaptive polynomial based forward prediction algorithm for multi-actuator real-time dynamic substructuring. Proceedings of the Royal Society of London A 461(2064), 3807-3826.
Wagg DJ and Bishop SR (2002) Application of nonsmooth modelling techniques to the dynamics of a flexible impacting beam. Journal of Sound and Vibration 256(5), 803-820.
Wagg DJ and Stoten DP (2001) Substructuring of dynamical systems via the adaptive minimal control synthesis algorithm. Earthquake Engineering and Structural Dynamics 30, 865-877.
Wagg DJ, Karpodinis G and Bishop SR (1999). An experimental study of the impulse response of a vibro-impacting cantilever beam. Journal of Sound and Vibration 228(2), 243-264.
A more complete list of my publications can be found on the University of Bristol publication database.