Ioannis A. Kougioumtzoglou

ASSISTANT PROFESSOR OF CIVIL ENGINEERING & ENGINEERING MECHANICS

622 S.W. Mudd
Mail Code 4709

Tel(212) 853-0462
Fax(212) 854-6267

Ioannis A. Kougioumtzoglou and his research group primarily develop analytical and numerical stochastic methodologies for the analysis and optimization of complex engineering systems and structures under the presence of uncertainties. These methodologies lead eventually to the robust and efficient design of dynamical systems ranging from the nanoscale (e.g. nanomechanical oscillators) to the macroscale (e.g. energy harvesters and civil infrastructure systems). 

Research Interests

Nonlinear stochastic dynamics, computational stochastic mechanics, uncertainty quantification methodologies, signal processing techniques, fractional calculus modeling, energy harvesting, nanomechanics, reliability assessment of complex dynamical systems.

Research Areas

Ever-increasing available computational capabilities, development of potent signal processing tools, as well as advanced experimental setups, have contributed to a highly sophisticated modeling of engineering systems and related excitations. As a result, the form of the governing equations has become highly complex from a mathematics perspective. Examples include complex nonlinearities, hysteresis, joint time/space-frequency representations, as well as generalized/fractional calculus. In many cases even the deterministic solution of such equations is an open issue and an active research topic. Clearly, solving the stochastic counterparts of these equations becomes orders of magnitude more challenging. In this regard, Kougioumtzoglou’s primary research interests focus on the general area of mathematical modeling and dynamics of complex structural/mechanical systems with emphasis on uncertainty quantification aspects. Systems exposed to hazard/risk inducing conditions are of particular interest. Specifically, the development of numerical and/or analytical techniques for computational stochastic mechanics, nonlinear stochastic dynamics, and signal processing applications constitutes one of the main research themes. Indicative diverse applications in civil engineering and engineering mechanics include the response determination and risk/reliability assessment of engineering systems/structures, as well as joint time/space-frequency analysis and spectral estimation under limited data.

Kougioumtzoglou received his five-year diploma in civil engineering from the National Technical University of Athens in Greece (2007), and his MSc (2009) and PhD (2011) degrees in Civil Engineering from Rice University in Texas. He joined the faculty of Columbia Engineering in 2014. Kougioumtzoglou has published more than 75 technical papers in peer-reviewed International Journals and Conference Proceedings, and is the 2014 European Association of Structural Dynamics (EASD) Junior Research Prize recipient “for his innovative influence on the field of nonlinear stochastic dynamics.” He has served in the scientific and/or organizing committees of several international technical conferences, and has co-chaired the 13th International Probabilistic Workshop (IPW 2015). He is a co-Editor of the Encyclopedia of Earthquake Engineering (Springer), an Editorial Board member for the ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems, and has served as a Guest Editor for several Special Issues in International Journals. 

PROFESSIONAL EXPERIENCE

  • Assistant professor of civil engineering and engineering mechanics, Columbia University, 2014–
  • Lecturer in uncertainty and engineering, University of Liverpool, UK, 2011-2014
  • Visiting professor, University of Sao Paulo (Brazil) 
  • Visiting professor, Federico Santa Maria Technical University (Chile)

PROFESSIONAL AFFILIATIONS

  • American Society of Civil Engineers (ASCE)
  • Engineering Mechanics Institute (EMI)
  • European Association for Structural Dynamics (EASD)
  • Fellow, the Higher Education Academy, UK (HEA)
  • Technical Chamber of Greece (Licensed Civil Engineer)

HONORS & AWARDS

  • Member, American Society of Civil Engineers (ASCE), 2015
  • Junior Research Prize, European Association of Structural Dynamics (EASD), 2014
  • Fellow, The Higher Education Academy (HEA), UK, 2014

SELECTED PUBLICATIONS

  • Kougioumtzoglou I. A., 2013. Stochastic joint time-frequency response analysis of nonlinear structural systems, Journal of Sound and Vibration, vol. 332: 7153-7173.
  • Kougioumtzoglou I. A., Spanos P. D., 2014. Stochastic response analysis of the softening Duffing oscillator and ship capsizing probability determination via a path integral approach, Probabilistic Engineering Mechanics, vol. 35: 67-74.
  • Spanos P. D., Kougioumtzoglou I. A., 2014. Survival probability determination of nonlinear oscillators subject to evolutionary stochastic excitation, ASME Journal of Applied Mechanics, vol. 81, 051016: 1-9.
  • Di Matteo A., Kougioumtzoglou I. A., Pirrotta A., Spanos P. D., Di Paola M., 2014. Stochastic response determination of nonlinear oscillators with fractional derivatives elements via the Wiener path integral, Probabilistic Engineering Mechanics, vol. 38: 127-135.
  • Tubaldi E., Kougioumtzoglou I. A., 2015. Nonstationary stochastic response of structural systems equipped with nonlinear viscous dampers under seismic excitation, Earthquake Engineering and Structural Dynamics, vol. 44: 121-138.
  • Spanos P. D., Kong F., Li J., Kougioumtzoglou I. A., 2016. Harmonic wavelets based excitation-response relationships for linear systems: A critical perspective, Probabilistic Engineering Mechanics, vol. 44: 163-173.
  • Comerford L. A., Kougioumtzoglou I. A., Beer M., 2016. Compressive sensing based stochastic process power spectrum estimation subject to missing data, Probabilistic Engineering Mechanics, vol. 44: 66-76.
  • Fragkoulis V., Kougioumtzoglou I. A., Pantelous A., 2016. Statistical linearization of nonlinear structural systems with singular matrices, ASCE Journal of Engineering Mechanics, vol. 142 (9), 04016063: 1-11.
  • Kougioumtzoglou I. A., dos Santos K. R. M., Comerford L., 2017. Incomplete data based parameter identification of nonlinear and time-variant oscillators with fractional derivative elements, Mechanical Systems and Signal Processing, vol. 94: 279-296.
  • Kougioumtzoglou I. A., 2017. A Wiener path integral solution treatment and effective material properties of a class of one-dimensional stochastic mechanics problems, ASCE Journal of Engineering Mechanics, vol. 143 (6), 04017014: 1-12.