George C. Tsiatas, MSc-DIC, Dr. Eng.

 

Associate Professor

Department of Mathematics

University of Patras, Rio, 26504, Greece

 

 

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Publications in International Journals:

28. Tsiatas G.C. and Charalampakis A.E. (2017) A new Hysteretic Nonlinear Energy Sink (HNES), Communications in Nonlinear Science and Numerical Simulation, (under review), (preprint version: https://arxiv.org/abs/1704.06597)

27. Tsiatas G.C. and Babouskos N.G. (2017) Elastic-plastic analysis of functionally graded bars under torsional loading, Composite Structures, Vol. 176, pp. 254-267. (https://doi.org/10.1016/j.compstruct.2017.05.044)

26. Tsiatas G.C. and Babouskos N.G. (2017) Linear and geometrically nonlinear analysis of non-uniform shallow arches under a central concentrated force, International Journal of Non-Linear Mechanics, Vol. 92, pp. 92-101. (https://doi.org/10.1016/j.ijnonlinmec.2017.03.019)

25. Tsiatas G.C. and Charalampakis A.E. (2017) Optimizing the natural frequencies of axially functionally graded beams and arches, Composite Structures, Vol. 160, pp. 256-266. (http://doi.org/10.1016/j.compstruct.2016.10.057)

24. Tsiatas G.C. and Fragiadakis M. (2016) Dynamic analysis and seismic response of planar circular arches with variable cross-section, Journal of Earthquake Engineering, (http://dx.doi.org/10.1080/13632469.2016.1217805).

23. Katsikadelis J.T. and Tsiatas G.C. (2016) Saint-Venant torsion of non-homogeneous anisotropic bars, Journal of Applied and Computational Mechanics, Vol. 2, No. 1, pp. 42-53. (http://doi.org/10.22055/jacm.2016.12270)

22. Tsiatas G.C. and Yiotis A.J. (2015) Size effect on the static, dynamic and buckling analysis of orthotropic Kirchhoff-type skew micro-plates based on a modified couple stress theory: Comparison with the nonlocal elasticity theory, Acta Mechanica, Vol. 226, Issue 4, pp. 1267-1281. (http://doi.org/10.1007/s00707-014-1249-3)

21. Tsiatas G.C. (2014) A new efficient method to evaluate exact stiffness and mass matrices of non-uniform beams resting on an elastic foundation, Archive of Applied Mechanics, Vol. 84, Issue 5, pp. 615‑623. (http://doi.org/10.1007/s00419-014-0820-7)

20. Tsiatas G.C. and Yiotis A.J. (2013) A BEM-based meshless solution to buckling and vibration problems of orthotropic plates, Engineering Analysis with Boundary Elements, Vol. 37, Issue 3, pp. 579-584. (http://doi.org/10.1016/ j.enganabound.2013.01.007)

19. Tsiatas G.C. and Katsikadelis J.T. (2011) Nonlinear analysis of elastic space cable-supported membranes, Engineering Analysis with Boundary Elements, Vol. 35, Issue 10, pp. 1149-1158. (http://doi.org/10.1016/j.enganabound.2011.05.005)

18. Tsiatas G.C. and Katsikadelis J.T. (2011) A new microstructure-dependent Saint-Venant torsion model based on a modified couple stress theory, European Journal of Mechanics/A Solids, Vol. 30, Issue 6, pp. 741-747. (http://doi.org/10.1016/ j.euromechsol.2011.03.007)

17. Tsiatas G.C. (2010) Nonlinear analysis of non-uniform beams on nonlinear elastic foundation, Acta Mechanica, Vol. 209, Issue 1-2, pp. 141-152. (http://doi.org/10.1007/s00707-009-0174-3)

16. Tsiatas G.C. (2009) A new Kirchhoff plate model based on a modified couple stress theory, International Journal of Solids and Structures, Vol. 46, Issue 13, pp. 2757-2764. (http://doi.org/10.1016/j.ijsolstr.2009.03.004)

15. Tsiatas G.C. and Katsikadelis J.T. (2009) Post-critical behavior of damped beam columns with variable cross-section subjected to distributed follower forces, Nonlinear Dynamics, Vol. 56, Issue 4, pp. 429-441. (http://doi.org/10.1007/s11071-008-9412-9)

14. Sapountzakis E.J. and Tsiatas G.C. (2007) Flexural-torsional buckling and vibration analysis of composite beams, Computers, Materials & Continua, Vol. 6, Issue 2, pp. 103-116. (http://doi.org/10.3970/cmc.2007.006.103)

13. Katsikadelis J.T. and Tsiatas G.C. (2007) Optimum design of structures subjected to follower forces, International Journal of Mechanical Sciences, Vol. 49, Issue 11, pp. 1204-1212. (http://doi.org/10.1016/j.ijmecsci.2007.03.011)

12. Katsikadelis J.T. and Tsiatas G.C. (2007) Nonlinear dynamic stability of damped Beck's column with variable cross-section, International Journal of Non-linear Mechanics, Vol. 42, Issue 1, pp. 164-171. (http://doi.org/10.1016/j.ijnonlinmec. 2006.10.019)

11. Sapountzakis E.J. and Tsiatas G.C. (2007) Elastic flexural buckling analysis of composite beams of variable cross-section by BEM, Engineering Structures, Vol. 29, Issue 5, pp. 675-681. (http://doi.org/10.1016/j.engstruct.2006.06.010)

10. Sapountzakis E.J. and Tsiatas G.C. (2007) Flexural-torsional vibrations of beams by BEM, Computational Mechanics, Vol. 39, Issue 4, pp. 409-417. (http://doi.org/10.1007/s00466-006-0039-8)

9. Tsiatas G.C. and Katsikadelis J.T. (2006) A BEM based domain decomposition method for nonlinear analysis of elastic space membranes, Computational Mechanics, Vol. 38, Issue 2, pp. 119-131. (http://doi.org/10.1007/ s00466-005-0725-y)

8. Tsiatas G.C. and Katsikadelis J.T. (2006) Large deflection analysis of elastic space membranes, International Journal for Numerical Methods in Engineering, Vol. 65, Issue 2, pp. 264-294. (http://doi.org/10.1002/nme.1499)

7. Katsikadelis J.T. and Tsiatas G.C. (2006) Regulating the vibratory motion of beams by shape optimization, Journal of Sound and Vibration, Vol. 292, Issue 1-2, pp. 390-401. (http://doi.org/10.1016/j.jsv.2005.08.002)

6. Katsikadelis J.T. and Tsiatas G.C. (2005) Buckling load optimization of beams, Archive of Applied Mechanics, Vol. 74, Issue 11-12, pp. 790-799. (http://doi.org/10.1007/s00419-005-0402-9)

5. Katsikadelis J.T. and Tsiatas, G.C. (2004) Nonlinear dynamic analysis of beams with variable stiffness, Journal of Sound and Vibration, Vol. 270, Issue 4-5, pp. 847-863. (http://doi.org/10.1016/S0022-460X(03)00635-7)

4. Katsikadelis J.T. and Tsiatas G.C. (2003) Large deflection analysis of beams with variable stiffness, Acta Mechanica, Vol. 164, Issue 1-2, pp. 1-13. (http://doi.org/ 10.1007/s00707-003-0015-8)

3. Katsikadelis J.T. and Tsiatas G.C. (2003) Nonlinear dynamic analysis of heterogeneous orthotropic membranes by the analog equation method, Engineering Analysis with Boundary Elements, Vol. 27, Issue 2, pp. 115-124. (http://doi.org/ 10.1016/S0955-7997(02)00089-9 )

2. Katsikadelis J.T. and Tsiatas G.C. (2001) The analog equation method for large deflection analysis of heterogeneous orthotropic membranes. A boundary-only solution, Engineering Analysis with Boundary Elements, Vol. 25, Issue 8, pp. 655-667. (http://doi.org/10.1016/S0955-7997(01)00033-9 )

1. Katsikadelis J.T., Nerantzaki M.S. and Tsiatas G.C. (2001) The analog equation method for large deflection analysis of membranes. A boundary-only solution, Computational Mechanics, Vol. 27, Issue 6, pp. 513-523. (http://doi.org/10.1007/ s004660100263 )

 

 

Publications in Books Published by International Publishing Companies

1. Tsiatas G.C. and Yiotis A.J. (2010) A microstructure-dependent orthotropic plate model based on a modified couple stress theory, Recent Developments in Boundary Element Methods, A Volume to Honour Professor John T. Katsikadelis, Sapountzakis E. (ed.), WIT Press, Southampton, pp. 295-308, ISBN 978-1-84564-492-5.

https://www.witpress.com/Secure/elibrary/papers/9781845644925/9781845644925022FU1.pdf

 

Publications in National and International Conferences Proceedings

32. Syrimi P.G., Sapountzakis E.J., Tsiatas G.C. and Antoniadis I.A. (2017) Parameter optimization of the KDamper concept in seismic isolation of bridges using Harmony Search Algorithm, Proc. of the 6th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2017, Rhodes Island, Greece, June 15-17, Vol. 1, pp.37-51.

31. Tsiatas G.C. and Charalampakis A.E. (2016) Optimizing the natural frequencies of functionally graded beams and arches, Proc. of the 11th HSTAM International Congress on Mechanics, Athens, Greece, May 27-30, Book of Abstracts pp. 170.

30. Tsiatas G.C. and Babouskos N.G. (2016) Elastic-plastic analysis of functionally graded bars under torsional loading, Proc. of the 11th HSTAM International Congress on Mechanics, Athens, Greece, May 27-30, Book of Abstracts pp. 169.

29. Tsiatas G.C. and Fragiadakis M. (2015) Seismic response and design of arched structures, Proc. of the 8th GRACM International Congress on Computational Mechanics, Volos, Greece, 12 - 15 July, Book of Abstracts and USB.

28. Tsiatas G.C. and Babouskos N.G. (2015) Linear and geometrically nonlinear analysis of in-plane thin shallow arches, Proc. of the 8th GRACM International Congress on Computational Mechanics, Volos, Greece, 12 - 15 July, Book of Abstracts and USB.

27. Tsiatas G.C. (2013) Exact stiffness and mass matrices of a non-uniform Bernoulli-Euler 2d beam resting on an elastic foundation, Proc. of the 10th HSTAM International Congress on Mechanics, Chania, Greece, May 25-27, Book of Abstracts pp. 208 and CD-ROM.

26. Tsiatas G.C. and Yiotis A.J. (2013) A modified couple-stress theory for bending, buckling and vibration of skew orthotropic micro-plates, Proc. of the 10th HSTAM International Congress on Mechanics, Chania, Greece, May 25-27, Book of Abstracts pp. 15 and CD-ROM.

25. Tsiatas G.C. and Yiotis A.J. (2013) A BEM-Based meshless solution to the buckling problem of orthotropic plates, Proc. of the 10th HSTAM International Congress on Mechanics, Chania, Greece, May 25-27, Book of Abstracts pp. 195 and CD-ROM.

24. Tsiatas G.C. and Yiotis A.J. (2011) A microstructure-dependent orthotropic plate model based on a modified couple stress theory, Proc. of the 7th GRACM International Congress on Computational Mechanics, Athens, Greece, 30 June - 2 July, Book of Abstracts pp. 142 and CD-ROM.

23. Tsiatas G.C. and Katsikadelis J.T. (2011) Nonlinear analysis of elastic space cable-supported membranes, Proc. of the 7th GRACM International Congress on Computational Mechanics, Athens, Greece, 30 June - 2 July, Book of Abstracts pp. 141 and CD-ROM.

22. Tsiatas G.C. (2011) A new Kirchhoff plate model based on a modified couple stress theory, Proc. of the 7th GRACM International Congress on Computational Mechanics, Athens, Greece, 30 June - 2 July, Book of Abstracts pp. 140 and CD-ROM.

21. Tsiatas G.C. and Katsikadelis J.T. (2009) A BEM solution to the Saint-Venant torsion problem of micro-bars, Proc. of the 10th International Conference on Boundary Element Techniques, Athens, Greece, July 22-24, pp. 217-224.

20. Tsiatas G.C. (2009) Nonlinear analysis of non-uniform beams on nonlinear elastic foundation, Proc. of the 10th International Conference on Boundary Element Techniques, Athens, Greece, July 22-24, pp. 209-216.

19. Sapountzakis E., Gantes C. and Tsiatas G. (2007) Flexural-Torsional Buckling and Vibration Analysis of Homogeneous or Composite Constant or Variable Cross Section Beams, Proc. of the PYTHAGORAS Conference for the Scientific Research in National Technical University of Athens, Plomari, Lesvos, Greece, July5-8, pp. 117-124 (in Greek).

18. Tsiatas G.C. and Katsikadelis J.T. (2007) Post-critical behavior of damped beam columns with variable cross-section subjected to distributed follower forces, Proc. of the 8th HSTAM International Congress on Mechanics, N. Bazeos, D.L. Karabalis, D. Polyzos, D.E. Beskos and J.T. Katsikadelis (eds.), Patras, Greece, July 12-14, Vol. II, pp. 859-866.

17. Sapountzakis E.J. and Tsiatas G.C. (2006) Flexural - Torsional Buckling and Vibration Analysis of Composite Beams, International Association for Boundary Element Methods IABEM 2006 Conference, Graz, Austria, 10-12 July, pp. 263-266.

16. Katsikadelis J.T. and Tsiatas G.C. (2005) Optimum Design of Structures Subjected to Follower Forces, International Symposium on Nonconservative and Dissipative Problems in Mechanics, Serbian Academy of Sciences and Arts, Novi Sad, Serbia and Montenegro, September 11-14, Book of Abstracts pp. 16-17.

15. Sapountzakis E.J. and Tsiatas G.C. (2005) Flexural - Torsional Vibrations of Beams by BEM, Proc. of the Tenth International Conference on Civil, Structural and Environmental Engineering Computing, Rome, Italy, 30 August - 2 September, Book of Abstracts pp. 259-260 and CD-ROM.

14. Sapountzakis E.J. and Tsiatas G.C. (2005) Flexural - Torsional Buckling Analysis of Beams by BEM, Proc. of the 5th GRACM International Congress on Computational Mechanics, G. Georgiou and P. Papanastasiou (eds.), Limassol, Cyprus, 29 June - 1 July, pp. 787-794.

13. Sapountzakis E.J. and Tsiatas G.C. (2005) Flexural Buckling Analysis of Composite Beams of Variable Cross-Section by BEM, Proc. of the Coupled Problems 2005, Computational Methods for Coupled Problems in Science and Engineering, Santorini, Greece, May 25-28, Book of Abstracts pp. 199 and CD-ROM.

12. Katsikadelis J.T. and Tsiatas G.C. (2004) Buckling Load Optimization, 5th German-Greek-Polish Symposium on Advances in Mechanics, Bad Honnef, Germany, September 12-18, Book of Abstracts pp. 33-34.

11. Katsikadelis J.T. and Tsiatas G.C. (2004) Vibration Control of Beams by Shape Optimization, Proc. of the 7th National Congress on Mechanics, A. Kounadis, C. Providakis and G. Exadaktylos (eds.), Chania, Greece, June 24-26, Vol. II, pp. 118-123.

10. Tsiatas G.C. and Katsikadelis J.T. (2003) The Domain Decomposition Method for Nonlinear Analysis of Elastic Space Membranes, Proc. of the International Conference on Computational & Experimental Engineering and Sciences, Corfu, Greece, July 24-29, CD-ROM.

9. Tsiatas G.C. and Katsikadelis J.T. (2002) Nonlinear Analysis of Elastic Space Membranes, Proc. of the 4th GRACM Congress on Computational Mechanics, D.T. Tsahalis (ed.), Patra, Greece, June 27-29, pp. 1162-1169.

8. Katsikadelis J.T. and Tsiatas G.C. (2002) Nonlinear Dynamic Analysis of Beams with Variable Stiffness. An Analog Equation Solution, Proc. of the 4th National Conference on Steel Structures, D.E. Beskos, D.L. Karabalis and A.N. Kounadis (eds.), Patra, Greece, May 24-25, pp. 376-383.

7. Tsiatas G.C. and Katsikadelis J.T. (2001) The Domain Decomposition Method for Large Deflection Analysis of Membranes, XXIII Yugoslav Congress of Theoretical and Applied Mechanics, Belgrade, Yugoslavia, October 12-14.

6. Tsiatas G.C. and Katsikadelis J.T. (2001) Large Deflection Analysis of Cable Supported Membranes, IV German-Greek- Polish Symposium on Advances in Mechanics, Pultusk, Poland, September 18-22, Book of Abstracts pp. 65-66.

5. Katsikadelis J.T. and Tsiatas G.C. (2001) Large Deflection Analysis of Beams with Variable Stiffness. An Analog Equation Solution, Proc. of the 6th National Congress of Mechanics, E.C Aifantis and E.N. Kounadis (eds.), Thessaloniki, Greece, July 19-21, pp. 172-177.

4. Katsikadelis J.T. and Tsiatas G.C. (2001) Nonlinear Dynamic Analysis of Heterogeneous Orthotropic Membranes by the Analog Equation Method, In: Beskos D.E., Brebbia C.A., Katsikadelis J.T. and Manolis G.D. (eds), Boundary Elements XXIII, WITpress, Southampton, pp. 139-148.

3. Katsikadelis J.T. and Tsiatas G.C. (2000) The Analog Equation Method for Large Deflection Analysis of Heterogeneous Anisotropic Membranes. A Boundary-only Solution, In: Brebbia, C.A. and Power, H. (eds.), Boundary Elements XXII, WITpress, Southampton, pp. 329-338.

2.. Katsikadelis J.T., Nerantzaki M.S. and Tsiatas G.C. (2000) The Analog Equation Method for Large Deflection Analysis of Membranes. A Boundary-only Solution, Proc. of the 4th International Colloquium on Computation of Shell and Spatial Structures, Chania, Greece, June 5-7, Abstract pp. 144-145 and CD-ROM.

1. Katsikadelis J.T. and Tsiatas G.C. (1999) The Boundary Element Method for the Torsion Problem of Nonhomogeneous Anisotropic Bars, Proc. of the 3rd National Congress on Computational Mechanics, N. Aravas and J.T. Katsikadelis (eds.), Volos, Greece, June 24-26, pp. 517-526.