Associate Professor

Telephone
+44 (0)131 451 8372
Email
d.cotsovos@hw.ac.uk
Address
Room 2.21
William Arrol Building
Heriot-Watt University
Demitrios Cotsovos
Research
  • constitutive modelling of the behaviour of structural materials (i.e. concrete, steel, fibre-reinforcement, fibre-reinforced concrete, lightweight concrete etc)
  • numerical and experimental investigation of the behaviour of reinforced concrete and composite structural forms under load ranging from static (monotonic and cyclic) to dynamic (seismic, impact, blast)
  • formulation of nonlinear finite element analysis strategies for the investigation of the nonlinear behaviour of reinforced concrete structures subjected to loads ranging from static to dynamic (seismic, impact, blast)
  • developing alternative design and structural assessment methods for RC structural forms under seismic and under high-rate loading (associated with impact and blast problems)
  • investigation of the effect of steel fibres on the response of various reinforced concrete configurations under static loading applied monotonically or seismic loading
  • investigation of the effect of infill walls on the dynamic response of frames
  • investigation of the effect of the rocking motion on structural response (i.e. of multi-drum columns encountered in ancient monuments).
Selected publications
  • Cotsovos D.M. and Pavlović M.N. (2012) “Modelling of RC Beams under Impact Loading” Proceedings of the ICE-Structures and Buildings 165 (2), 77-94.
  • Kounadis A.N., Papadopoulos G. and Cotsovos D.M. (2012)" Overturning instability of a two-rigid-block system under ground excitation" ZAMM-Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik 92 (7), pp.536-557
  • Cotosvos D.M. and Kotsovos M.D. (2011) Constitutive Modelling of Concrete Behaviour: Need for Reappraisal". Computational Methods in Earthquake Engineering Computational Methods in Applied Sciences, 2011, Vol.21, 147-175.
  • Abbas A.A., Pullen A. and Cotsovos D.M. (2010) “Structural response of RC wide beams under low-rate and impact loading”. Magazine of Concrete Research, Vol.62, No.10, October, pp. 723–740.
  • Pavlović M.N., Cotsovos D.M., Dedić M.M. and Savidu A, (2010) “Reinforced jet-grouted piles. Part 2: Materials and Tolerances”. Proceedings of the Institution of Civil Engineers, Structures and Buildings, Vol. 163, October 2010 Issue SB5, pp.309–315
  • Pavlović M.N., Cotsovos D.M., Dedić M.M. and Savidu A, (2010) “Reinforced jet-grouted piles. Part 1: Analysis and design”. Proceedings of the Institution of Civil Engineers, Structures and Buildings, Vol. 163, October 2010 Issue SB5, pp.299–308
  • Cotsovos D.M. (2010), ‘A Simplified approach for assessing the load-carrying capacity of reinforced concrete beams subjected to impact loading”. International Journal of Impact Engineering, Vol. 37, 2010, pp. 907-917.
  • Cotsovos D.M., Stathopoulos N.D. and Zeris Ch. “Fundamental behaviour of RC beams subjected to high rates of concentrated loading”. Journal of Struct. Eng.. ASCE, Vol.134,  2008, pp.1839-1851.
  • Cotsovos D.M. & Kotsovos M.D. “Cracking of rc beam / column joints: Implications for practical structural analysis and design”. The Structural Engineer. June 2008, pp 33-39.
  • Cotsovos D.M. & Pavlovic M.N. “Numerical investigation of concrete subjected to high rates of uniaxial tensile loading”. International Journal of Impact Engineering, Vol. 35, No. 5, May 2008, pp. 319-335.
  • Cotsovos D.M. & Pavlovic M.N., “Numerical investigation of concrete subjected to compressive impact loading. Part 2: Parametric investi0gation of factors affecting behaviour at high loading rates”. Computers & Structures, Vol. 86, No. 1-2, January 2008, pp. 164-180.
  • Cotsovos D.M. & Pavlovic M.N. “Numerical investigation of concrete subjected to compressive impact loading. Part 1: A fundamental explanation for the apparent strength gain at high loading rates”. Computers & Structures, Vol. 86, No. 1-2, January 2008, pp. 145-163.
Biography

Dr D.M. Cotsovos holds a degree in Civil Engineering from the Civil Engineering Department of University of Patras, an MSc in "Structural Design and Analysis" from the Civil Engineering Department National Technical University of Athens and a Ph.D. from the Civil and Environmental Engineering Department at Imperial College London; for which he received the 2005 Unwin Award.

At Imperial College London, as a PhD student, he was involved in research concerned with the development of a FE package capable of providing realistic predictions for the response of concrete structural forms under seismic and high rate loading. This package was successfully used to investigate the behaviour of structural concrete under increasing loading rates (usually associated with impact and blast) and to study the response of a number of RC structural configurations under high rates of concentrated loading.

As a researcher, at the National Technical University of Athens, he was involved in research concerned with (a) the analysis and design of reinforced concrete structures under impact or blast loading, (b) the development of guidelines for the design and analysis of reinforced concrete military structures and (b) the investigation of the behaviour of the railway reinforced concrete infrastructure under dynamic loading caused by high speed trains.

At the Office of Theoretical and Applied Mechanics of the Academy of Athens, he was involved in research investigating experimentally and numerically the response of reinforced concrete walls under seismic loading as well as the effect of rocking on the dynamic response of various systems under seismic excitation (i.e. multi-drum columns encountered in ancient monuments).

He has also worked as a project manager and supervisor engineer of various high profile sites concerned with ground investigation as well as structural works. Additionally, he was the Principal Assistant to the Expert Witness in a multi-million litigation case investigating the structural integrity of jet-grouted piles constructed in order to enable further dredging of the Southampton Port. He has also been involved in a number of projects concerned with the structural assessment, analysis and design of structures.

Further information