Directory of Experts
Details for Dr Nicholas Alexander
| Personal details | |
| Name | Dr Nicholas Alexander |
| Job title | Reader in Structural Dynamics |
| Department | Department of Civil Engineering University of Bristol |
| Contact details | This expert can be contacted via the University of Bristol Public Relations
Office. To help us deal with your request, please mention the Directory of Experts when contacting the Public Relations Office. work+44 (0)117 331 8092 email: public-relations@bristol.ac.uk |
| Qualifications | B.Sc.(Eng) Lond, Ph.D.(UCL.), C.Math MIMA |
| Professional details | |
| Membership of professional bodies | Institute of Mathematics and its Applications (MIMA) Chartered Scientist, CSci Chartered mathematician, CMath Graduate member of institution of civil engineers |
| Keywords | earthquake engineering structural dynamics nonlinear dynamics |
| Areas of expertise | At the moment, I am working on the following research projects: -The behaviour of nonlinear moment resisting frames under seismic excitation. -Pre-stressed frames with opening joints that allow structures to soften but remain undamaged after earthquakes. -Nonlinear tuned mass dampers – can we improve on a linear tuned mass damper? -All analysis in earthquake engineering is predicated on the accurate processing of ground motion timehistories. We use state of the art signal processing ideas such as wavelet decomposition and denoising, Wigner-ville methods, Bispectra, Volterra Kernels, adaptive total least squares etc. -Analysis of long structures that are subjected to differential seismic excitation both in acceleration and displacement; i.e. the multi-support excitation of bridges. -Human-Structure interaction – dynamic feedback between structures and people that can produce complex and unexpected resonances. -Understanding the dynamics of piled structures, using a nonlinear dynamics perspective. -Vulnerability of cities; structure-soil-structure interaction. |