System Dynamics Laboratory

The System Dynamics Laboratory was founded in 2001. It supports teaching and conducts research in the areas of:

  • modeling and simulation
  • identification, health diagnosis, maintenance and control
  • stochastic simulation and reliability
  • design and optimization

of dynamical systems.

Research areas include:

  • Probabilistic Structural Dynamics
    • Structural Reliability
    • Fatigue Reliability of Vibrating Structures under Random Loading
    • Stochastic Simulation in Mechanics/Dynamics
  • Uncertainty Quantification, Structural Identification, Inverse Problems, Bayesian Inference
    • Structural Identification, Mutli-Objective Identification
    • Modal Identification using Ambient and Earthquake-Induced Vibrations
    • Finite Element Structural Model Validation and Updating using Vibration Measurements
    • Optimal Sensor Location using Information Theory Methods
    • Structural Health Monitoring, Fault/Damage Detection and Identification
  • Design Optimization Under Uncertainty
    • Reliability-Based Design Optimization
    • Size and Topology Design Optimization
    • Robust Design Optimization
  • Structural Control
    • Active and Passive Structural Control
    • Reliability-Based Structural Control
  • Multi-Objective Optimization, Genetic Algorithms and Evolution Strategies for Design Optimization and Inverse Problems

Professor, PhD'90 California Institute of Technology, USA

Structural Dynamics
☎ +30 24210 74006
✉ costasp (at) uth.gr

Diploma in Accounting (Vocational Training Institute)

Secretary, Division of Mechanics, Materials & Manufacturing Processes
☎ +30 24210 74008
✉ tkpappa (at) uth.gr

Consulting Services

The SDLab provides consulting services to the industry in the following areas:

(Under construction )

 

RESEARCH TOPICS

The following research topics are carried out at the present time

  • Uncertainty quantification, identification and propagation in large scale simulations of complex mechanical systems
  • Fatigue lifetime predictions in the entire body of metallic structures using limited number of sensors
  • Active Structural Control
  • Finite element structural model updating and validation
  • Structural damage detection and identification using vibration measurements
  • Fatigue reliability of vibratory systems under random loading
  • Design optimization under uncertainty
  • Topology optimization of structures under loading and structural uncertainty

Commercial Software

GUI Software Developed by SDLab Personnel

  • MI-Tool: GUI modal identification software based on either frequency response functions, or earthquake-induced vibrations, or operational vibrations (Manual)
  • FEMUS: GUI finite element model validation and updating software based on vibration data (Manual)

Hardware

  • Infrastructure Wireless Health Monitoring
    • 9 wireless IMOTE2 programmable sensor boards with 3-axial accelerometer, temperature, humidity and light sensors s well as 4-channel 0-3V ADC with external inputs
  • Monitoring of Earthquake/Ambient Vibrations
    • 5 triaxial and 3 uniaxial SYSCOM acceleration sensors units with common triggering using cables or GPS.

PhD Theses

In Progress

1. Tulay Ercan (in progress since Oct. 2018), Bayesian Optimal
Experimental Design in Structural Dynamics. Funded by Marie Skłodowska-Curie Innovative Training
Network.

2. Xinyu Jia (in progress since Oct. 2018), Bayesian Tool
for UQ in Structural Dynamics Simulations. Funded by Marie Skłodowska-Curie Innovative Training
Network.

 

Completed

 

1. Costas Argyris (July 2017), Bayesian Uncertainty Quantification and Optimal Experimental Design in Data-Driven Simulations of Engineering Systems. (download)

Current Position (Jan. 2018 – present): Postdoctoral Fellow, Dept of Civil Engineering, K.U.Leuven, Belgium.

2. Dimitra-Christina Papadioti (July 2015), Management of uncertainties in structural response and reliability simulations using measured data. (download)

Current Position: Postdoctoral Fellow & Instructor, Dept of Civil Engineering, University of Thessaly, Greece.

3. Grigoris Karaiskos (February 2011), Experimental Verification of Active Vibration Control of Structures using Jet Pulses. (download)

Current Position: Postdoctoral fellow at Department Mechanics of Materials and Constructions (MeMC) of Vrije Universiteit Brussel (VUB). Previous Position (2011-14): Postdoctoral fellow at Building, Architecture& Town Planning Department (BATir Service) of Université Libre de Bruxelles (ULB).

4. Kyriakos Perros (July 2010), Reliability and Design Optimization of Nonlinear Dynamical Systems under Uncertainty. (download)

Current Position: Research and Development Engineer, ACE-Hellas S.A., Athens, Greece.

5. Evangelos Ntotsios (December 2009), Structural Identification of Complex Structures based on Vibration Measurements. (download)

Current Position: Research Fellow, Dynamics Group, University of Southampton, England. Previous Position: Research Associate, School of Civil and Building Engineering, Loughborough University, England.

6. Konstantinos Christodoulou (March 2006), Development of Damage Detection and Identification Methododology. (download)

Current Position: Technical Service Department, Prefecture of Magnisia, Volos, Greece.

Postdoctoral Fellows Research

1. Saeed Eftekhar Azam (Jan. 2014 – Sept 2015), Response and fatigue predictions in structures using Kalman-type filters and limited number of vibration measurements.

Current Position (Jan. 2017 – present): Postdoctoral Fellow, Dept. of Civil Engineering, University of Nebraska at Lincoln.  Previous Position (Sept. 2015- Dec. 2016): Postdoctoral Fellow, University of Milan, Italy.

2. Dimitris Papadimitriou (June 2012 – May 2015), Robust Aero-structural Optimization based on New Higher-Order Adjoint Methods.

Current Position (Oct. 2015 – present): Postdoctoral Fellow, Oakland University, Michigan, USA; and FEA Engineer, BETA CAE Systems USA, Inc.

3. Panos Angelikopoulos (Jan. 2012 – Jul 2012), Uncertainty Quantification and Propagation for Molecular Dynamics Simulations and Nanotechnology, Visitor from ETH-Zurich (Supervisor: Prof Petros Koumoutsakos).

Current Position (starting Jan. 2016): Research Scientist, DE Shaw Research, New York, USA.

MSc Theses (Selected)

Completed

1. Christina Papadioti  Master Thesis (2011), Modal Identification and Finite Element Model Updating of Metsovo Bridge using Vibration Measurements.

2. Evaggelos Ntotsios, Master Thesis (2009),  Modal Identification of Structures using Ambient Vibrations: Theory, Software and Applications. (download)

3. Kyriakos Perros, Master Thesis (2009), Reliability of Linear and Nonlinear Systems Under Earthquake Loads. (download)

4. Grigoris Karaiskos, Master Thesis (2008),  Passive Control of Structures using Multiple Tuned Mass Dampers: Theory and Experimental Validation. (download)

5. Ioannis Nikolaou, Master Thesis (2008),  Structural Modal Identification based on Earthquake Vibrations,. (download)

6. Stavros Gaitanaros, Master Thesis (2007), Crack Identification in Structures Using Optimal Sensor Locations. (download)

7. Sakis Maragkozakis, Master Thesis (2004),  “Optimal Experimental Design of Structures,” University of Thessaly.

8. Ioannis Haralampidis, Master Thesis (2003), Optimal Sensor Location and Multi-objective Identification of Structures Using Evolution Algorithms.

9. Maria Pavlidou, Master Thesis (2003),  Methods for Identification of Modal Models of Structures.

10. Zannis Poulakis, Master Thesis (2002),  Design Optimization and Leakage Detection in Water Pipe Networks Using Evolution Algorithms (Co-Advisor).

11. Konstantinos Christodoulou, Master Thesis (2001),  Finite Element Model Updating with Applications in Damage Detection of Structures.

 

 

Diploma Theses (Selected)

 

In progress

 

 

 

 

 

 

 

Professor Costas Papadimitriou
System Dynamics Laboratory
Department of Mechanical & Industrial Engineering
University of Thessaly
Pedion Areos
Volos 38334
Greece
Tel.: +30 24210 74006
Fax: +30 24210 74012
Email: costasp@uth.gr

 
 
 
 
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