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TUL - Division of Dynamics

Professor Andrzej Stefański

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Professor

Professor in Dynamics

DoB: July 31, 1967
Technical University of Lodz
Division of Dynamics
ul. Stefanowskiego 1/15
90-924 Lodz
Poland
tel. +4842 6312230
e-mail: A Stefański

Summary

My research interests are focused on Synchronization, mechanical oscillations, nonlinear oscillators, stability of systems, bifurcations and chaos, stochastic dynamics, mathematical modelling, ordinary differential equations, vibro-impact systems, dry friction modelling, applications of nonlinear dynamics in mechanical engineering.
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Higher Education and Qualifications
  • Faculty of Mechanical Engineering, Technical University of Łódź, M.Sc. in mechanics, 1993.
  • Faculty of Mechanical Engineering, Technical University of Łódź, Ph.D. in mechanics, 1996.
  • Faculty of Mechanical Engineering, Technical University of Łódź, D.Sc. in mechanics, 2004.
Employment History and Work Experience
  • Since 2008 Professor, Faculty of Mechanical Engineering, Technical University of Łódź.
  • 1997-2008 Lecturer, Faculty of Mechanical Engineering, Technical University of Łódź.
  • 1996-1997 Assistant, Faculty of Mechanical Engineering, Technical University of Łódź.
  • 1993-1996 PhD student, Faculty of Mechanical Engineering, Technical University of Łódź.
Research Grants
  • New methods of estimation of Lyapunov exponents in dynamical systems, 2011-14, NCN, Poland, (as co-investigators).
  • Analysis of synchronization of a net of chaotic oscillators, 2005-07, DBN, Poland, (as main investigator).
  • Nonlinear models of physics and dynamics of dry friction, 2003-05, KBN, Poland, (as main investigator, with Prof. T. Kapitaniak and as co-investigator).
  • Numerical and experimental analysis of the synchronization of dynamical chaotic systems, 2002–05, KBN, Poland, (as main investigator, with Prof. T. Kapitaniak and as co-investigator).
  • Theoretical and experimental analysis of dry friction in chaotic systems, 1996-2000, KBN, Poland, (as main investigator, with Prof. T. Kapitaniak as co-investigator).
  • Dynamic Complexity in Systems, Deutscher Akademischer Austauschdienst, Programm des Projektbezogenen Personenaustauschs (PPP) mit Project Based Personnel Exchange Programme with Polen – DAAD/KBN, 2007-09, EUR: 8120,
  • Multi-scale Modeling of Dry Friction, The Royal Society of London, 2007-09, £12,000 (a joint project with the University of Aberdeen). Supporting grant of Ministry of Science and Higher education, Poland, PLN: 50000.
  • Dynamics and synchronization of nonlinear mechanical oscillators suspended on elastic beam, Ministry of Science and Higher education, Poland, 2006-09, PLN: 280800 (as co-investigator).
  • Analysis of the synchronization phenomena in the array of chaotic oscillators, Ministry of Science, Poland, 2005-2007, PLN: 157300 (as principal investigator).
  • Numerical and experimental analysis of the process of synchronization of chaotic dynamical systems, KBN, Poland, 2002-04, PLN 171.920.11.
  • Estimation of the largest Lyapunov exponent in non-smooth systems on base of synchronization of systems, KBN, Poland, 2000-02, PLN 64.480 (as co-investigator).
Publications - Books
  • J. Strzalko, J. Grabski, P. Perlikowski, A. Stefanski and T. Kapitaniak, "Dynamics of Gambling: Origins of Randomness in Mechanical Systems", Series: Lecture Notes in Physics, Vol. 792 , Springer, ISBN: 978-3-642-03959-1 (2010)
  • A. Stefanski. Estimation of the largest Lyapunov exponent of dynamical systems on the basis of synchronization phenomena, Technical University of Łódź, 2004 (in Polish).
Publications - Chapters in Books
  • J. Strzalko, J. Grabski, A. Stefanski, P. Perlikowski and T. Kapitaniak, "Dynamics of the coin tossing", Topics on Chaotic Systems, Selected Papers from CHAOS 2008 International Conference, World Scientific, (2009) World Scientific.
  • P. Perlikowski, A. Stefanski and T. Kapitaniak, "Ragged Synchronizability of Coupled van der Pols Oscillators", Nonlinear Dyanamics, Narosa Publishing House, New Delhi, India , (2009), Narosa Publishing House
  • P. Perlikowski, A. Stefanski and T. Kapitaniak, "Ragged Synchronizability and Clustering in a Network of Coupled Oscillators",Recent Advances in Nonlinear Dynamics and Synchronization (NDS-1) - Theory and Applications, Studies in Computational Intelligence, Vol. 254/2009, Springer Berlin / Heidelberg, (2009) Studies in Computational Intelligence
  • K. Czolczynski, A. Stefanski, P. Perlikowski and T. Kapitaniak, "Periodization and synchronization of Duffing oscillators suspended on elastic beam", IUTAM, 2006, IUTAM Bookseries.
  • K. Czolczynski, A. Stefanski, P. Perlikowski and T. Kapitaniak (2007). Periodization and synchronization of Duffing oscillators suspended on elastic beam. In Dynamics and Control of Nonlinear Systems with Uncertainty, H.Y. Hu and E. Kreuzer (eds), Springer-Verlag, Berlin, pp. 317-322.
  • A. Stefanski, J. Wojewoda and T. Kapitaniak (2006). Synchronization of chaotic systems with diagonal coupling, In. Large-Scale Computing, I. Lirkov, S. Margenov and J. Wasniewski (eds), Lecture Notes in Computer Science no. 3743, Springer-Verlag, Berlin, pp. 321-331.
  • A. Stefanski, J. Wojewoda, T. Kapitaniak and J. Brindley (1999). Estimation of the largest Lyapunov exponent of discontinuous systems using chaos synchronization, Proceedings of DETC'99, 1999 ASME Design Engineering Technical Conferences, ASME Press, pp. 1-4.
  • Stefański A., Wojewoda J., Kapitaniak T. and Brindley J.: Estimation of the largest Lyapunov exponent of discontinuous systems using chaos synchronization, ASME Design Engineering Technical Conferences, Las Vegas, USA, (1999).
Publications - Papers
  • A. Stefanski, J. Wojewoda, A. Chudzik and T. Kapitaniak: "Hyperbolic-like properties of Popp's attractor", International Journal of Bifurcation and Chaos 22(8) (2012). IJBC
  • P. Perlikowski, A. Stefanski, T. Kapitaniak: "Discontinuous synchrony in an array of Van der Pol oscillators", International Journal of Non-Linear Mechanics 45(9) (2010), IJNLM, PDF
  • J. Grabski, J. Strzalko, A. Stefanski, P. Perlikowski and T. Kapitaniak: "Understanding coin tossing", The Mathematical Intelligencer (2010), Math. Intelligencer. 32(4), PDF
  • P. Perlikowski, S. Yanchuk, M. Wolfrum, A. Stefanski, P. Mosilek and T. Kapitaniak: "Routes to complex dynamics in a ring of unidirectionally coupled systems", Chaos: An Interdisciplinary Journal of Nonlinear Science, 20(1), (2010) Chaos, PDF
  • K. Czolczynski, P. Perlikowski, A. Stefanski and T. Kapitaniak: "Clustering of Huygens' clocks", Progress of Theoretical Physics Vol. 122, No. 4, (2009) PTP, PDF
  • K. Czolczynski, P. Perlikowski, A. Stefanski and T. Kapitaniak: "Clustering and synchronization of n Huygens' clocks", Physica A 388 (2009). Physica A, PDF
  • Wojewoda, J, Stefański, A, Wiercigroch, M, Kapitaniak, T: 2009, Estimation of Lyapunov exponents for a system with sensitive friction model, Archive of Applied Mechanics, 79 (6-7), pp. 667-677.
  • K. Czolczynski, A. Stefanski, P. Perlikowski T. Kapitaniak: "Multistability and chaotic beating of Duffing oscillators suspended on an elastic structure", Journal Sound and Vibration 322, (2008). JSV, PDF
  • P. Perlikowski, B. Jagiello, A. Stefanski, T. Kapitaniak: "Experimental observation of ragged synchronizability", Physical Review E 78 (2008). PRE, PDF
  • P. Perlikowski, A. Stefanski, and T. Kapitaniak: "1:1 Mode locking and generalized synchronization in mechanical oscillators", Journal Sound and Vibration, 318 (2008). JSV, PDF
  • P. Perlikowski, A. Stefanski, and T. Kapitaniak: "Comment on Synchronization in a ring of four mutually coupled van der Pol oscillators: Theory and experiment"", Physical Review E, 77, doi:048201 (2008). PRE, PDF
  • Stefanski A.: Quantifying the synchronizability of externally driven oscillators, Chaos, 18, 013106 (2008), DOI: 10.1063/1.2832641.
  • J. Wojewoda, A. Stefanski, M. Wiercigroch and T. Kapitaniak (2008). Hysteretic effects of dry friction: modelling and experimental studies, Philosophical Transactions of the Royal Society, A366, 747-766. PTRSA PDF
  • Czolczynski K., Perlikowski P., Stefanski A., and Kapitaniak T.: Synchronization of self-excited oscillators suspended on elastic structure, Chaos, Solitons and Fractals, 32, 937-943, (2007).
  • Wojewoda, J, Stefański, A, Wiercigroch, M and Kapitaniak, T: 2007, Hysteretic effects of dry friction: modelling and experiments, Online First, doi:10.1098/rsta.2007.2125, Philosophical Transactions of the Royal Society A, Phil. Trans. R. Soc. A (2008) 366, 747–765.
  • K. Czolczynski, A. Stefanski, P. Perlikowski and T. Kapitaniak: "Dynamics of an Array of Duffing Oscillators Suspended on Elastic Structure", Machine Dynamics Problems, 31(2), (2007).
  • K. Czolczynski, T. Kapitaniak, P. Perlikowski and A. Stefanski: "Periodization of Duffing oscillators suspended on elastic structure: mechanical explanation", Chaos, Solitons and Fractals, 32 (2007). CSF, PDF
  • K. Czolczynski, P. Perlikowski, A. Stefanski and T. Kapitaniak: "Synchronization of self-excited oscillators suspended on elastic structure", Chaos, Solitons and Fractals, 32 (2007). CSF,PDF
  • A. Stefanski, P. Perlikowski, T. Kapitaniak: Ragged synchronizability of coupled oscillators. Physical Review E, 75, (2007). PRE, PDF
  • P. Perlikowski, A. Stefanski: Synchronization of coupled mechanical oscillators, Mechanics and Mechanical Engineering, 10 (2006).
  • A. Stefanski, J. Wojewoda, M. Wiercigroch, and T. Kapitaniak (2006). Regular and chaotic oscillations of friction force, Journal of Mechanical Engineering Science, 220, 273-284. JMES, PDF
  • S. Yanchuk, A. Stefanski, T. Kapitaniak, and J. Wojewoda (2006). Dynamics of an array of mutually coupled semiconductor lasers, Physical Review E73, 016209(1-7). PRE , PDF
  • Furmanik K, Stefański A, Wojewoda J: 2006, Friction induced vibrations in the conveying belt – roller system, Mechanics and Mechanical Engineering, 10(1), 8-20.
  • A. Stefanski, J. Wojewoda, T. Kapitaniak, and S. Yanchuk (2004). Simple estimation of synchronization threshold in esembles of diffusively coupled chaotic systems, Physical Review E70, 026217(1-11). PRE, PDF
  • A. Stefanski, T. Kapitaniak, J. Wojewoda and M. Wiercigroch (2003). Chaos caused by non-reversible dry friction, Chaos, Solitons and Fractals, 16, 661-664. CSF, PDF
  • Stefański, A, Wojewoda, J, Furmanik, K: 2001, Experimental and Numerical Analysis of Self-Excited Friction Oscillators, Chaos, Solitons and Fractals, 12, 1691-1704.
  • Stefański, A, Wojewoda, J and Wiercigroch, M: 2000, Mechanics and Mechanical Engineering 4(2), 127-137. Numerical analysis of Duffing oscillator with dry friction damper.
  • Stefański A.: Estimation of the largest Lyapunov exponent in systems with impacts, Chaos, Solitons & Fractals, 11 (15), 2443-2451, (2000).
  • Stefański A., Kapitaniak T.: Using chaos synchronization to estimate the largest Lyapunov exponent of non-smooth systems, Discrete Dynamics in Nature and Society, 4, 207-215, (2000).
  • Kapitaniak T., Maistrenko Y., Stefański A., Brindley J.: Bifurcations from locally to globally riddled basins, Physical Review E, 57, 6253-6256, (1998).
  • Stefański A., Kapitaniak T., Brindley J., Astakhov V.: Torus on-off intermittency in coupled Lorenz systems, Physical Review E, 57, 1175-1177, (1998).
  • Stefański A., Kapitaniak T., Brindley J.: Dynamics of coupled Lorenz systems and its geophysical implications, Physica D, 98, 594-598, (1996).
  • Jeż M., Stefański A., Czołczyński K.: Analysis and simulation of deterministic chaos in the dynamical model of aeroplane engine mounting, Mechanics and Mechanical Engineering, 2, 163-173, (1998).
  • Stefański A., Kapitaniak T.: Steady state locking in coupled chaotic systems, Physics Letters A, 210, 279-282, (1996).
Publications - Refereed Conference Papers
  • Stefański, A, Wojewoda, J, Kapitaniak, T: 2012, Bifurcation comparison of dynamical responses of nonlinear friction oscillators with sensitive and intensitive friction models. Statics, dynamics and stability of structures. Vol. 2. Łódź, 2012
  • Stefański A., Kapitaniak T.: Synchronization and desynchronization of mechanical systems with chaotic driving, Proceedings of EUROMECH 457 Symposium on Nonlinear Modes of Vibrating Systems, Frejus 2004, France, 57-60.
  • Stefański A., Kapitaniak T.: The largest Lyapunov exponent of dynamical systems with time delay, Proceedings of the IUTAM Symposium on Chaotic Dynamics and Control of Systems and Processes in Mechanics, Rome 2003, (2004).
  • Stefański A., Wojewoda J., Kapitaniak T., Wiercigroch M.: Chaotic response of non-reversible dry friction oscillator, Proceedings of XXI ICTAM Congress, Warsaw, (2004).
  • Stefański A.: A simple detection of chaotic motion in mechanical systems, Proceedings of the XXIX Summer School Actual Problems in Mechanics (APM 2001), IPME RAS, St. Petersburg, Rosja, 518-524, (2002).
  • Stefański A., Kapitaniak T.: Estimation of the largest Lyapunov exponent of non-smooth systems, Proceedings of 7th Pan American Congress of Applied Mechanics, Temuco, Chile, 177-180, (2002).
  • Wojewoda, J, Stefanski, A and Wiercigroch, M: 2002, Proc. 5th International Conference on Vibration Engineering, 18-20 September 2002, Nanjing, China, 594-500. A novel model of dry friction: Experimental and theoretical studies.
  • Stefański A., Kapitaniak T. and Brindley J.: A simple method of chaos detection in mechanical systems with discontinuities, ASME Design Engineering Technical Conferences, Pittsburgh, Pensylwania, USA, (2001).
  • Stefański A., Kiełbasiński W.: Synchronization of two identical mechanical systems, International Conference Actual Problems in Mechanics, St. Petersburg, Rosja, 227-234, (2001).
  • Stefański A., J. Wojewoda: On Analysis of Mechanical System with Dry Friction, International Conference Actual Problems in Mechanics, St. Petersburg, Rosja, 267-278, (2001).
  • Stefański, A, Wojewoda, J: 2000, On Analysis of Mechanical System with Dry Friction, Proceedings of the APM, St-Petersburg.
  • Stefański, A, Wojewoda, J, Kapitaniak, T and Brindley, J: 1999, ASME Design Engineering Technical Conferences, 12-15 September 1999, Las Vegas, US. Estimation of the largest Lyapunov exponent of discontinuous systems using chaos synchronization.
Administrative Duties
  • Advisor in Studies Mechanical Engineering
Entry date: 2015-07-29
Modified: 2015-07-30
Entered by: J Wojewoda