Efstathios E. Theotokoglou

    Professor

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A. Ph.D.

A.1 Theotokoglou, E.E.,

Solution of Crack Problems with the Finite Element Method (in Greek),

Section of Mechanics, Department of Engineeering Science,

National Technical University of Athens, December, 1984.

The results of the thesis are included in the papers numbered B.1, B.2, B.3, B.4, B.6, C.1, and C.3.


B. REFFERED JOURNAL PAPERS

  1. Theocaris, P.S., Tsamasphyros, G. and Theotokoglou, E.E., “A Combined Integral-Equation and Finite-Element Method for the Evaluation of Stress Intensity Factors”, Comp. Meth. Appl. Mech. Engrg. Vol.31, pp.117-127 (1982). (link to paper) 

  2. Theocaris, P.S., Theotokoglou, E.E. and Tsamasphyros, G., “A Relaxation Technique for Evaluating Stress Intensity Factors by the Finite Element Method”, Int. Journal Num. Meth. Engrg, Vol.19, pp.17-26 (1983). (link to paper)

  3. Theocaris, P.S., Tsamasphyros, G. and Theotokoglou, E.E., “An Alternating Coupling of Finite Elements and Singular Integral Equations for the Solution of Branched Cracks in Finite Sheets” Engrg. Fracture Mech., Vol.20, pp.583-589 (1984). (link to paper)

  4. Theocaris, P.S., Tsamasphyros, G. and Theotokoglou, E.E., “A Combination of the Finite-Elements and Integral-Equations Methods for the Solution of the Generally Cracked Body”, Int. Journal Num. Meth. Engrg, Vol.20, pp.2065-2075 (1984). (link to paper)

  5. Theotokoglou, E.E. and Tsamasphyros, G., “Plastic Zones in Glassy Polymers Around Cracks Approaching a Bimaterial Interface Under Small Scale Yielding”, Journal of Appl. Polymer Science, Vol.31, pp.163-178 (1986). (link to paper)

  6. Tsamasphyros, G. and Theotokoglou, E.E., “Crack Approaching Perpendicularly the Boundary of a Rectangular Sheet: An Integral Equation and Finite Element Solution”, Theoretical and Applied Fracture Mechanics, Vol.5, pp.173-179 (1986). (link to paper)

  7. Theotokoglou, E.E. and Tsamasphyros, G., “The Influence of the Elastic Constants to the Shape of the Incipient Plastic Zones Around Cracks near a Bimaterial Interface”, Materialprufung, Vol.28, pp.391-394 (1986). (link to paper from Scopus)

  8. Stabouloglou, J.H. and Theotokoglou, E.E., “Study of the Geometric Properties of the Moments of inertia of a Plane Simple Connected Section”, Technica Chronica-A (Journal of the Society of the Greek-Engineers), Vol.7, pp.124-131 (1987).

  9. Tsamasphyros, G. and Theotokoglou, E.E., “Uncoupled Superposition of Finite Element and Integral Equation Methods for the Solution of Crack Problems”, International Journal of Fracture, Vol.36, pp.219-231 (1988). (link to paper from Scopus)

  10. Tsamasphyros, G. and Theotokoglou, E.E., “The Problem of the Microdefects in the Matrix and Debondings along a Circular Inclusion: An Integral Equation Solution”, Mech. Research Comm., Vol.16, pp.289-295 (1989). (link to paper from Scopus)

  11. Theotokoglou, E.E. and Tsamasphyros, G., “An Integral Equation Solution for Cracked Half-Planes Bonded Together and Containing Debondings along their Interface”, International Journal of Fracture, Vol.55, pp.1-16 (1992). (link to paper)

  12. Tsamasphyros, G. and Theotokoglou, E.E., “The Finite Element Alternating Method”, Discussion, Engineering Fracture Mechanics, Vol.42, pp.405-406 (1992). (link to paper)

  13. Theotokoglou, E.E. and Tsamasphyros, G., “A Circular Inclusion in an Infinite Elastic Medium Weakened by Cracks and/or Holes”, Mech. Research Comm., Vol.20, pp.121-128 (1993). (link to paper)

  14. Theotokoglou, E.E. and Stabouloglou, G., “Study of the Inertial Properties of a Simply Connected Section”, Rev. Roum. Sci. Tech.-Mecanique Appliquee, Vol.39, pp.141-155 (1994).

  15. Theotokoglou, E.E. and Moan T., “Experimental and Numerical Study of Composite T-Joints”, Journal of Composite Materials, Vol.30, pp.190-209 (1996). (link to paper)

  16. Theotokoglou, E.E., “Analytical Determination of the Ultimate Strength of Sandwich Beams”, Applied Composite Materials, Vol.3, pp.345-353 (1996). (link to paper from Scopus)

  17. Theotokoglou, E.E., “Strength of Composite T-joints under Pull-Out Loads”, Journal of Reinforced Plastics and Composites, Vol.16, pp.503-518 (1996). (link to paper)

  18. Theotokoglou, E.E., “Interlaminar Cracking of Composite Shells”, Theoretical and Applied Fracture Mechanics, Vol.27, pp.13-20 (1997). (link to paper)

  19. Theotokoglou, E.E. and Tsamasphyros, G., “Derivation of Exact Expressions for Two-Dimensional Singular and Finite-Part Integrals Applicable in Solid Mechanics“, Engineering Analysis with Boundary Elements, Vol. 22, pp. 125-132 (1998). (link to paper)

  20. Theotokoglou, E.E., “Study of the Numerical Fracture Mechanics Analysis of Composite T-Joints”, Journal of Reinforced Plastics and Composites”, Vol. 18, pp. 215-223 (1999). (link to paper)

  21. Theotokoglou, E.E., “Bonded Cracked Half Planes with an Interface and an Intersecting Crack”, International Journal of Fracture, Vol. 98, pp. 361-367 (1999). (link to paper)

  22. G. Tsamasphyros, E.E. Theotokoglou, “Pade approximants for the numerical solution of singular integral equations”, Computational Mechanics, Vol. 23, pp. 519-523, (1999). (link to paper)

  23. E.E. Theotokoglou, G. Tsamasphyros, “An appropriate quadrature rule for the analysis of plane crack problems in the boundary-element method”, Communications in Numerical Methods in Engineering, Vol. 17,pp.691-699,(2001). (link to paper)

  24. I.H. Stampouloglou and E.E. Theotokoglou, “The two-actions theorem and its application to composite materials”, The Archive in Mechanical Engineering, Vol. XLIX, pp. 297-315 (2002).

  25. E.N. Theotokoglou, E.E. Theotokoglou, “ The interface crack along a cirular inclusion interacting with a crack in the infinite matrix ” International Journal of Fracture, Vol. 116, pp. 1-23 (2002). (link to paper)

  26. I.H. Stampouloglou, E.E. Theotokoglou, “The plane elasticity problem of an isotropic wedge under normal and shear distributed loading- application in the case of a multi-material problem, International Journal of Solids and Structures, Vol. 40, pp. 5839-5860 (2003). (link to paper)

  27. E.E. Theotokoglou, “Boundary integral equation method to solve embedded planar crack problems under shear loading”, Computational Mechanics, Vol. 33, pp. 327-333, 2004. (link to paper)

  28. E.E. Theotokoglou, I.H. Stampouloglou, “The plane wedge problem loaded at the apex –The self similarity property and the Characteristic vector”, Journal of Elasticity, Vol. 76, pp. 21-43, 2004. (link to paper)

  29. I.H. Stampouloglou, E.E. Theotokoglou and D.E. Panayotounakos, “Exact analytic solutions of the nonlinear partial differential Equations governing rigid perfect plasticity problems”, Acta Mechanica, Vol. 174, pp. 1-20, 2005. (link to paper)

  30. Stampouloglou, I.H., Theotokoglou, E.E. and Andriotaki, Petra N., “Asymptotic solutions to the nonlinear cantilever elastica”, International Journal of Nonlinear Mechanics, Vol. 40, pp. 1252-1262, 2005. (link to paper)

  31. Theotokoglou, E.E. and Paulino, G.H., “A crack in the homogeneous half plane interacting with a crack at the interface between the nonhomogeneous coating and the homogeneous half-plane”, International Journal of Fracture, Vol. 134, L11-L18, 2005. (link to paper)

  32. Stampouloglou, I.H. and Theotokoglou, E.E., “The anisotropic and angularly inhomogeneous elastic wedge under a monomial load distribution”, Archive of Applied Mechanics, Vol. 75, pp. 1-17 (2005). (link to paper)

  33. Theotokoglou, E.E. and Vrettos, C.D., “A finite element analysis of angle-ply laminate end-notched flexure specimens”, Composite Structures, Vol. 73, pp. 370-379 (2006). (link to paper)

  34. Panayotounakos, D.E., Theotokoglou, E.E. and Markakis M.P., “Exact analysis solutions for the unforced damped duffing nonlinear oscillator”, Comptes Rendus – Mechanics Journal, Vol. 334, pp.311-316 (2006). (link to paper)

  35. Tsamasphyros, G. and Theotokoglou, E.E., “A quadrature formula for integrals with nearby singularities”, International Journal for Numerical Methods in Engineering, Vol. 67, pp. 1082-1093 (2006). (link to paper)

  36. Theotokoglou E.E and Tsamasphyros, G., “A modified Gauss, quadrature formula with special integration points for evaluation of Quasi-singular integrals”, Engineering Analysis with Boundary Element, Vol. 30, pp. 758-766 (2006). (link to paper)

  37. Theotokoglou E.E., "Behavior of thick composite tubes considering of delamination", Theoretical and Applied Fracture Mechanics, Vol. 46, pp.276-285 (2006). (link to paper)

  38. Andriotaki, P.N., Stampouloglou, I.H. and Theotokoglou E.E. "Nonlinear asymptotic analysis in elastica of straight bars-analytical parametric solutions", Archive of Applied Mechanics, Vol. 76, pp. 525-536 (2006). (link to paper)

  39. Stampouloglou, I.H. and Theotokoglou , E.E., "Investigation of the plane axisymmetric cylindrical tube under internal and external pressures", International Journal of Mechanics and Materials in Design Vol.3, pp.59-71 (2006). (link to paper)

  40. Stampouloglou, I.H. and Theotokoglou, E.E., “The plane-self-similar anisotropic and angularly inhomogeneous wedge under power law tractions and the asymptotic analysis of the stress field”, European Journal of Mechanics A/Solids, Vol. 26, pp. 55-67 (2007). (link to paper)

  41. Theotokoglou, E.E., Hortis, D., Carlsson, L.A. and Mahfuz, H., “Numerical study of fractured sandwich composites under flexural loading”, Journal of Sandwich Structures and Materials, Vol. 10, pp.75- 94 (2008). (link to paper)

  42. Tsamasphyros, G. and Theotokoglou, E.E., “Inmost singularities of S.I.Es influencing their numerical solution in the BEM”, Engineering Analysis with Boundary Element, Vol. 32, pp. 187-195 (2008). (link to paper)

  43. Theotokoglou, E.E. and Stampouloglou, I.H., “The radially nonhomogeneous elastic axisymmentric problem”, International Journal of Solids and Structures, Vol. 45, pp. 6535-6552 (2008). (link to paper)

  44. Stampouloglou, I.H. and Theotokoglou, E.E., Additional separated-variable solutions of the biharmonic equation in polar coordinates, Journal of Applied Mechanics, Transactions ASME, Vol. 77, pp. 1-8 (2010). (link to paper)

  45. Panayotounakos, D.E., Theotokoglou, E.E. Sotiropoulos N.B. and Sotiropoulou, A.B., “Exact analytic solutions of the plastic spin equations in simple shear”, Mathematics and Mechanics of Solids, Vol. 15, pp. 147-164 (2010). (link to paper)

  46. Theotokoglou, E.E. and Stampouloglou, I.H., “An analytic approach for an adhesive layer in a graded elastic wedge”, Mechanics of Advanced Materials and Structures, Vol. 17, pp. 393-405 (2010). (link to paper)

  47. Theotokoglou, E.E. and Tourlomousis, I.I, “Crack kinking in sandwich structures under three point bending”, Theoretical and Applied Fracture Mechanics, Vol. 53, pp. 158- 164 (2010). (link to paper)

  48. Panayotounakos, D.E., Rizou, I. And Theotokoglou, E.E., “A new mathematical construction of the general ODEs of motion of rigid body dynamics (Euler’s Equations)”, Applied Mathematics and ComputationVol. 217, pp. 8534-8542 (2011).  (link to paper)

  49. Theotokoglou, E.E. and Sideridis, E., “Study of composite beams in asymmetric four point bending”, Journal of Reinforced Plastics and Composites,Vol. 30, pp. 1125-1137 (2011). (link to paper)

  50. Tsamasphyros, G., Theotokoglou, E.E. and S.P. Filopoulos, “Study and solution of B.E.M.-singular integral equation method in the case of concentrated loads”, International Journal of Solids and Structures, Vol. 50, pp. 1634-1645 (2013). (link)

  51. Theotokoglou, E.E. and Sideridis, E. P., “Study of asymmetric glass reinforced plastic beams in off-axis four point bending”, Journal of Composite Materials, Vol. 49, pp.587-599 (2015).(link)

  52. Vartholomaios, S. D. and Theotokoglou, E.E., “Numerical study of  fractured sandwich beams with homogeneous or FGM faces under three point bending”, International Journal of Structural Integrity, Vol. 6, pp. 142-156 (2015).

  53. Theotokoglou, E. E., Balokas, G. A.,“Computational analysis and material selection in cross-section of a composite wind turbine blade”, Journal of Reinforced Plastics and Composites, Vol. 34, pp.101-115 (2015). (link)

  54. Papathanasiou, T. K., Karperaki, A., Theotokoglou, E.E. and Belibassakis, K. A., “A higher order FEM for time-domain hydroelastic analysis of large floating bodies in an inhomogeneous shallow water environment”, Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, Vol. 471, Article number 20140643(2015). (link)

  55. Papathanasiou, T. K., Karperaki, A., Theotokoglou, E.E. and Belibassakis, K. A., “Hydroelastic analysis of ice shelves under long wave excitation”, Natural Hazards and Earth System Sciences, Vol. 15, pp. 1851-1857 (2015). (link)

  56. Theotokoglou, E. E., Zarmpoutis T. I. and Stampouloglou I. H., “Closed-form solutions of the Thomas-Fermi in heavy atoms and the Langmuir-Blondgett in current flow ODES in Mathematical Physics”, Mathematical Problems in Engineering, Vol. 2015, Article ID 721637, 8 pages, 2015, doi:10.1155/2015/721637.(link)

  57. Theotokoglou, E.E., Sideridis, E. P. and Giannopoulos, I. “Analytical and Computational Study of the mofuli of fiber-reinforced composites and comparison with experiments” Composite Interfaces, Vol. 22, pp. 563-578 (2015).(link)

  58. Nikolarakis A. M. and Theotokoglou E. E. “Numerical analysis of transient stress field of a functionally graded nickel-zirkonia profile under thermal loading” Journal of Thermal Stresses, Vol. 38, pp. 1085-2015 (2015).(link)

  59. Giannopoulos I. K., Theotokoglou E. E. and Zhang X., “Design and numerical modeling of a pressurized airframe bulkhead joint”, Journal of Aircraft, Vol. 52, pp.1729-1735 (2015).(link)

  60. Kapetanou, O., Koutsos V., Theotokoglou E., Weygand D. and Zaiser M.,“Statistical analysis and stochastic dislocation-based modeling
    of microplasticity”, Journal of Mechanical Behavior of Materials,Vol. 24, pp. 105-113 (2015).(link)

  61. Manias D. M., Papathanasiou T. K., Markolefas S. I. and Theotokoglou E. E., “Analysis of a gradient-elastic beam on Winkler foundation and applications to nano-structure modelling”, European Journal of Mechanic A/Solids, Vol. 56, pp. 45-58 (2016). (link)

  62. Giannopoulos, K. I., Theotokoglou, E. E. and Zhang X., “Impact damage and  Cai Strength of a woven CFRP material with fire retardant properties”, Composites Part B,Vol. 91, pp. 8-17 (2016). (link)

  63. Theotokoglou, E.E. and Sideridis, E. P., “Study of unidirectional fiber reinforced epoxy composites in short-beam bending test”, Journal of Reinforced Plastics and Composites , Vol. 36, pp.1781-1789 (2017) (link)

  64. Stampouloglou, I.H. and Theotokoglou, E.E., “The radially nonhomogeneous thermoelastic axisymmetric problem”, International Journal of Mechanical Sciences, Vol. 120, pp. 311-321(2017) (link)

  65. Theotokoglou, E.E. and Panayotounakos, D.E., “Nonlinear Asymptotic Analysis of a system of two Free Coupled Oscillators with Cubic Nonlinearities”, Applied Mathematical Modeling, Vol. 43, pp. 509-520 (2017) (link)

  66. Tourlomousis, I.I and Theotokoglou, E.E., “Prediction of the crack Kinking in a sandwich structure beam subjected to three point bending using the J integral concept”,  Contemporary Engineering Sciences, Vol.10, pp. 521-534 (2017) (link)

  67. Nikolarakis A. M. and Theotokoglou  E. E. “Thermal shock problem of a three –layered functionally graded zirconia/titanium ally strip based on a unified generalized thermoelasticity theory”, Journal of Thermal Stresses, Vol. 40, pp. 583-602 (2017) (link)

  68. Nikolarakis A. M. and Theotokoglou E. E. “Transient analysis of a functionally graded ceramic/metal layer considering the Lord-Shulman theory”, Mathematical Problems in Engineering, Vol. 2018, Article ID 7371016, 11 pages doi:10.1155/2018/7371016.\ (link)

  69. Stampouloglou, I.H. and Theotokoglou, E.E., “The radially inhomogeneous isotropic elastic equal thickness spherical shell”, Composites Part B, Vol. 154, pp. 374-381 (2018) (link)


C. CONFERENCE PROCEEDINGS

  1. Tsamasphyros, G. and Theotokoglou, E.E., “S.I.F. Evaluation by using Finite-Element Method and Schwarz’s Alternating Method”, Proceedings of First USA-Greece Symposium on Mixed Alternating Method, Athens, August 1980, G.C. Sih and P.S. Theocaris, editors, Sijthoff and Noordhoff, Alphen aan den Rign, The Netherlands, pp.235-245 (1981).

  2. Theotokoglou, E.E., Tsamasphyros, G. and Theocaris, P.S., “Incipient Plastic Zones Around Cracks Approaching a Bimaterial Interface in Glassy Polymers”, Proceedings Congress “Interrelations between Processing Structure and Properties of Polymeric Materials”, (I.U.P.A.C.), J.C. Seferis and P.S. Theocaris editors, Elsevier Science Publishers B.V., pp.423-434 (1984).

  1. Theotokoglou, E.E., “Solution of Crack Problems in Finite Sheets Combining the Finite Element Method with the Singular Integral Equations Methods” (in Greek), Symposium of the Hellenic Society of the Theoretical and Applied Mechanics (H.S.T.A.M.), pp.151-158 (1984). (link to paper from Scopus)

  2. Tsamasphyros, G. and Theotokoglou, E.E., “A Direct Combination of the Finite Element and Singular Integral Equation Methods for the Solution of Crack Problems in Finite Sheets”, Proceedings of the 1st National Congress of Mechanics, Athens, 25-27 June 1986, Hellenic Society for Theoretical and Applied Mechanics (H.S.T.A.M.), Vol.1, pp.470-486 (1987).

  3. Theotokoglou, E.E. and Tsamasphyros, G., “Bonded Cracked and Perforated Half Planes with Debondings Along the Interface”, Proceedings of the 2nd National Congress of Mechanics, Hellenic Society for Theoretical and Applied Mechanics (H.S.T.A.M), Athens, June 29-July 1, 1989, Vol.1, pp.346-356 (1990).

  4. Theotokoglou, E.E. and Moan, T., “Stress Analysis of a GRP/PVC Sandwich T-joint”, Proceedings of the 8th International Conference on Composite Materials (ICCM/VIII), Honolulu, July 15-19, 1991, Stephen W. Tsai and George S. Springer editors, Sampe International, Vol.1, pp.9.C.1-9.C.10 (1991).

  5. Tsamasphyros, G. and Theotokoglou, E.E., “Interaction of Cavities in the Matrix with Debonding along a Circular Inclusion”, Proceedings of “Phase Interaction in Composite Materials”(COMP’88), Patras, August 1988, S.A. Paipetis and G.C. Papanicolaou editors, Omega Scientific, pp. 510-520 (1992).

  6. Theotokoglou, E.E. and Tsamasphyros, G., “Cracks and Holes Interacting with n Elastic Inclusion”, Proceedings of the Second International Conference on Computer-Aided Assessment and Control of Localized Damage, Southampton, U.K., July 1-3, M.H. Aliabadi, H. Nisitani and D.J. Cartwright, editors, Computational Mechanics Publications and Elsevier Applied Science, Vol.2, pp.547-565 (1992).

  7. Theotokoglou, E.E. and Tsamasphyros, G., “Bonded Elastic Half Planes with an Interface Crack and an Intersecting Crack”, Proceedings of the 1st National Congress on Computational Mechanics, Athens,3,4 September, 1992, Greek Association of Computational Mechanics (GR.A.C.M.), University of Patras Press, Vol.1, pp.44-52 (1992).

  8. Theotokoglou, E.E. and Tsamasphyros, G., “The problem of the Interaction Between an Elastic Inclusion and an Array of Curvilinear Cracks or Holes”, Proceedings of the 3rd National Congress of Mechanics, Hellenic, Society for Theoretical and Applied Mechanics (H.S.T.A.M), Athens, 25-27 June, 1992, P.S. Theocaris editor, Vol.1, pp.452-459 (1993).

  9. Theotokoglou, E.E., “Bonded Cracked and Perforated Half Planes with Debondings along their Interafce: The problem of the kinked Crack”, Proceedings of the 9th International Conference on Composite Materials (ICCM/9), Madrid, 12-16 July, 1993, Antonio Miravete editor, University of Zaragoza, Woodhead Publising Limited, Vol.III, pp.322-326 (1993).

  10. Theotokoglou, E.E., “Analytical Determination of the Ultimate Strength of Sandwich Beams”, Proceedings of the 4th Greek National Congress on Mechanics, Hellenic Society for Theoretical and Applied Mechanics (H.S.T.A.M), Xanthi, Greece, 26-29 June, 1995, P.S. Theocaris and E.E. Gdoutos editors, Vol.1, pp.175-183 (1995).

  11. Theotokoglou, E.E. and Moan, T., “Non-linear Behaviour of Sandwich T-Joints”, Proceedings of the 3rd International Conference on Sandwich Construction, University of Southampton, UK, 12-15th September 1995, Howard G. Allen, editor, Engineering Materials, Advisory Services LTD. (EMAS), Vol.2, pp. 591-600 (1996).

  12. Theotokoglou, E.E., “Numerical Fracture Mechanics Studies of Composite T-Joints”, Proceedings of the 2nd National Congress on Computational Mechanics, Greek Association of Computational Mechanics (GR.A.C.M.), Chania, Crete, Greece, June 26-28, 1996, D.A. Sotiropoulos and D.E. Beskos editors, Vol.1, pp. 439-445 (1996).

  13. Theotokoglou, E.E., “Failure Modes in Sandwich T-Joints”, Proceedings of the Euromech 360 Colloquium “Mechanics of Sandwich Structures”, Saint-Etienne, France, 13-15, May 1997, A. Vautrin editor, Kluwer Academic Publishers, pp. 415-422, (1998).

  14. Theotokoglou E.E., Behaviour of Composite Tubes Considering Delamination: A Finite Element Approach, Proceedings of the 5th National Congress on Mechanics, Hellenic Society for Theoretical and Applied Mechanics (H.S.T.A.M.), Ioannina, Greece, 27-30 August, 1998, P.S. Theocaris, D.I. Fotiadis and C.V. Massalas editors, The University of Ioannina Press, GR-451 10 Ioannina, Greece, Vol.1, pp.148-153 (1998).

  15. Theotokoglou E.E. and Tsamasphyros G., Exact Expressions for Two-Dimensional Singular and Finite-Part Integrals Appearing During The Numerical Solution of Problems in Three Dimensional Elastostatics, Proceedings of the 5th National Congress on Mechanics, Hellenic Society for Theoretical and Applied Mechanics (H.S.T.A.M.), Ioannina Greece, 27-30 August, 1988, P.S. Theocaris, D.I. Fotiadis and C.V. Massalas editors, The University of Ioannina Press, GR-45110 Ioannina, Greece, Vol.1, pp.460-465 (1998).

  16. Theotokoglou E.E., Integral Equation Solution for a Cracked Sandwich Layer, Proceedings of the Fourth International Conference on Sandwich Structures, Stockholm, Sweden, June 9-11, 1998, Karl-Axel Olsson editor, Engineering Materials Advisory Services LTD, Vol. I, pp. 239-250 (1998).

  17. Theotokoglou E.E. and Tsamasphyros G., Efficient Extrapolation Formulae in the Boundary Element Method for the Analysis of Crack Problems, Proceedings of the 3rd National Congress on Computational Mechanics, Greek Association of Computational Mechanics (GR.A.C.M.), Volos, 24-26 June 1998, N. Aravas and J.T. Katsikadelis editors, University of Thessaly Press, Vol. 1, pp. 377-383 (1999).

  18. Theotokoglou E.E., Failure Modes in Composite Joints, A Finite Element Study, Proceedings of the Twelfth International Conference on Composite Materials (ICCM/12), Paris, July 5-9, 1999, T. Massard and A. Vautrin editors

  19. I.H. Stampouloglou and E.E. Theotokoglou, The infinitive isotropic wedge under linearly distributed loading, Proceedings of the 6th National Congress of Mechanics Hellenic Society of Theoretical and Applied Mechanics (HSTAM),Thessaloniki, Greece, July, 19-21, 2001, E.C. Aifantis and A.N. Kounadis, editors, Vol. II, pp. 133 139 ( 2001)

  20. Theotokoglou E.E.and Tsamasphyros G., “Efficient extrapolation formulae in the boundary element method for the analysis of rectangular cracks in three dimensional elasticity”, Proceedings of the 2nd European Conference on Computational Mechanics Solids, Structures and Coupled Problems in Engineering, Cracow, Poland, June 26-29, 2001.

  21. Theotokoglou E.E. and Stampouloglou I.H, “The multi-material wedge under normal and shear loading”, Proceeding of the tenth European Conference on Composite Materials (ECCM-10), Brugge, Belgium, June 3-7, 2002.

  22. E.E. Theotokoglou and E.N. Theotokoglou, A circular arc crack interacting with a crack in an infinite plate, Proceedings of the 5th GRACM Congress on Computational Mechanics, GRACM 202, Patras, Greece, 27-29 June, 2002, D.T. Tsahalis editor, Vol. I, pp. 35-42 (2002).

  23. I.H. Stampouloglou and E.E. Theotokoglou, The sandwich wedge under a concentrated load at the apex, Proceedings of the 6th International Conference on Sandwich Structures, Ft. Lauderdale, Florida, March 31 to April 2, 2003, J.A. Vinson, Y.D.S. Rajapakse and L.A. Carlsson editors, CRC PRESS, pp. 657-671 (2003).

  24. I.H. Stampouloglou and E.E. Theotokoglou, The validity of the variable separable method in special loading cases in composite multi-material wedges under normal and shear loading, Proceedings of “Recent Advances in Composite Materials” in Honor of S.A. Paipeti, Xanthi, Greece, June 12-14, 2003, E.E. Gdoutos and Z.P. Marioli- Riga editors, Kluwer Academic Publishers, pp. 47-60 (2003).

  25. E.E. Theotokoglou, I.H. Stampouloglou and P.N. Andriotaki, Exact Analytic Solutions of the Langmuir Nonlinear ODE in Current Flow, Influence of traditional mathematics and mechanics on modern science and technology (Fundamentals and applications related to physics and engineering problems), Proceedings, G.C. and C.P. Spyropoulos editors, Messini, Greece, pp. 345-353, May 24-28 (2004).

  26. E.E. Theotokoglou, I.H. Stampouloglou and P.N. Andriotaki, Large Elastic Deflections of Cantilevers Under Lateral and Terminal Buckling Loads Approximate Analytic Solutions, Influence of traditional mathematics and mechanics on modern science and technology (Fundamentals and applications related to physics and engineering problems), Proceedings, G.C. Sih and C.P. Spyropoulos editors, Messini, Greece, pp. 355-363, May 34-28 (2004).

  27. I.H. Stampouloglou and E.E. Theotokoglou, The elastostatic problem of the infinite orthogonal isotropic wedge under a concentrated load at its face, Proceedings of the 7th National Congress of Mechanics, Chania, Crete, Hellenic Society of Theoretical and Applied Mechanics (HSTAM), A.Kounadis, C. Providakis and G. Exadactylos editors, Volume I, pp. 186-195, June 24-26 (2004).

  28. P.N. Andriotaki, I.H. Stampouloglou, E.E. Theotokoglou, On the lack of exact analytic solutions of high-order nonlinear ODES in elastica buckling analysis of bars, Proceedings of the 7th National Congress of Mechanics, Chania, Crete, Hellenic Society of Theoretical and Applied Mechanics (HSTAM), A.Kounadis, C. Providakis and G. Exadactylos editors, Volume I, pp. 399-412, June 24-26 (2004).

  29. D.E. Panayotounakos, E.E. Theotokoglou, I.H. Stampouloglou, Exact analytic solutions of the Thomas-Fermi equation in heavy atoms, Proceedings of the 7th National Congress of Mechanics, Chania, Crete, Hellenic Society of Theoretical and Applied Mechanics (HSTAM), A. Kounadis, C. Providakis and G. Exadactylos editors, Volume I, pp. 176-185, June 24-26 (2004).

  30. Theotokoglou, E.E. and Paulino, G.H., Interaction between an embedded crack and an interface crack in nonhomogeneous coating system, Proceedings of the 8th International Symposium on Multifunctional and Functionally Grated Materials (FCM 2004), Leuven, Belgium, 11-14 July 2004, O.V. Biest, M. Gasik and J. Vleugels editors, Trans. Tech. Publication Ltd., Switzerland, pp. 397-402 (2005).

  31. Tsamasphyros G. and Theotokoglou, E.E., Quadrature formula for integrals with nearby singularities, Proceedings of the 5th GRACM International Congress on Computational Mechanics, Limassol, Cyprus, 29 June – 1 July 2005, G. Georgiou, P. Papanastasiou and M. Papadrakakis, editors, Nicosia 2005, Volume 2, pp. 863-870 (2005).

  32. Theotokoglou, E.E., Carlsson, L.A.and Mahfuz, H., Numerical study of fractured sandwich composites under flexural loading, Proceedings of the 7th International Conference on Sandwich Structures, Aalborg University, Denmark, 29-31 August 2005, O.T. Thomson, E.Bozhevolnaya and A. Lyckeggard editors, Springer, pp. 423-431 (2005).

  33. Theotokoglou, E.E. and Tsamaspyros, G., “Quadrature formula for integrals with ignored and nearby singularities”, Proceedings of the First South-East European Conference on Computational Mechanics, 28-30 June 2006 Kragujevac, Serbia, M. Kozic and M. Papadrakakis editors, pp. 150-154 (2006).

  34. Theotokoglou, E.E., “Numerical investigation of crack propagation in sandwich Structures”, Proceedings of the 16th European Conference of Fracture, Alexandroupoli Greece,July 3-7, 2006, E.E.Gdoutos, Editor, Springer, pp. 563-564(2006).

  35. Theotokoglou, E.E. and Stampouloglou, Ι.Η. , “The bond effect in a graded elastic wedge – An analytical approach”, Proceedings of the Multiscale and Functionally Graded Materials International Conference FGM IX, Oahu Island, Hawaii, USA, October 15-18 2006, G.H. Paulino, M.-J. Pindera, R.H.Dodds, Jr, F.A.Rochinha, E.V.Dave and L.Chen editors, American Institute of Physics, AIP Conference Proceedings-973,pp.826-831(2008). (link to paper)

  36. Theotokoglou, E.E. and Tsamaspyros G., “Inmost singularities and appropriate quadrature rules in the Boundary Element Method” Proceedings of the Boundary Elements and other Mesh Reduction Methods XXIX Conference New Forest, Southampton, United Kingdom, June 4-6 2007, C.A. Brebbia, D. Poljak and V.Popov, Editors, WIT Transactions on Modeling and Simulation, Vol. 44, pp. 141-148 (2007). (link to paper)

  37. Stampouloglou I.H. and Theotokoglou E.E., “Analytical determination of the stress field of the plane axisymmetric radially nonhomogeneous cylinder” Proceedings of the 8th HSTAM International Congress of Mechanics, University of Patras, Greece, July 12-14 2007, Hellenic Society of Theoretical and Applied Mechanics (HSTAM), N.Bazeos, D.L.Karabalis D. Polyzos, D.E.Beskos and J.T.Katsikadelis editors, Volume I, pp. 315-322 (2007).

  38. Panayotounakos D.E., Andriotaki P.N. and Theotokoglou E.E. “A new mathematical costruction of the general nonlinear ODEs of motion in rigid body dynamics (Euler’s Equations)”, Proceedings of the 8th HSTAM International Congress of Mechanics, University of Patras, Greece, July 12-14 2007, Hellenic Society of Theoretical and Applied Mechanics (HSTAM), N.Bazeos, D.L.Karabalis, D. Polyzos, D.E.Beskos and J.T.Katsikadelis editors,Volume II, pp. 533-540 (2007).

  39. Theotokoglou E.E.and Tourlomousis, I.I, “A Numerical investigation of fractured sandwich composites under flexural loading”, Proceedings of the st Conference, Engineering Against Fracture, University of Patras, Greece, May 28-30 2008, S. Pantelakis and C. Rodopoulos editors, Springer, pp. 563-571 (2009).

  40. Theotokoglou E.E. and Tsamaspyros G., “ Boundary Element Solution in the case of Concentrated Forces and Moments”, Proceedings of the Joint 8th World Congress on Computational Mechanics (WCCM8) and the 5th European Congress on Computational Methods in Applied Sciences and Engineering (ECCOMAS 2008), Venice, Italy, 30 June – 4 July 2008, B.A. Schrefler and U. Perego editors (2008).

  41. Theotokoglou, E.E., Sideridis E.and Tourlomousis, I.I., “A finite element analysis of fractured sandwich beams in asymmetric bending”, Proceedings the 2nd South–East European Conference on Computational Mechanics (SEECCM 2009), Rhodes Island, Greece, 22-24 June 2009, M. Papadrakakis, M. Kojic and V.Papadopoulos editors, paper SE135 (2009).

  42. Theotokoglou, E.E.and Tourlomousis, I.I, “A three dimensional crack analysis in a sandwich specimen under flexural loading”, Proceeding of the 17th International Conference on Composite Materials (ICCM-17), Edinburg, United Kingdom, July 27-31 2009, paper IB6:7(2009). (link to paper)

  43. Vartholomaios, S. D. and Theotokoglou, E.E., “Numerical analysis of sandwich beams with homogeneous or fgm faces under three point bending”, Proceedings of the 9th International Conference on Sandwich Structures (ICSS-9), California Institute of Technology, Pasadena, California, USA June 14-16 2010, G. Ravichandran editor, paper MC1_3 (2010).

  44. Theotokoglou E.E. and Maniatis M. –M., “ Computational analysis of the composite head and neck support device (HANS)”, Proceedings of the 9th HSTAM International Congress on Mechanics, University of Cyprus, Limassol, Cyprus, 12-14 July, 2010 Hellenic Society of Theoretical and Applied Mechanics (HSTAM), P. Papanastasiou, P. Roussis, D. Loukidis, E. Sarris and J. katsikadelis editors, paper 073, pp. 417-42 (2010).

  45. Theotokoglou, E.E.and Balokas, G.A, “Structural analysis and materials selection in cross-section of wind turbine blade”, Proceeding of the 16th International Conference on Composite Structures (ICCS- 16), Porto, Portugal, June 28-30 2011, A.J.M. Ferreira editor, paper  #187(2011).

  46. Theotokoglou, E.E. and Apostolatos A., “Finite element methods for2-D frictionless contact problems in linear elasticity”, Proceedings of the 7th GRACM International Congress on Computational Mechanics, National Center for Scientific Research “Demokritos”, Athens, Greece, 30 June – 2 July 2005, Organized by the Greek Association of Computational Mechanics, paper No_25 (2011).

  47. Tourlomousis, I.I and Theotokoglou, E.E., “Prediction of the crack Kinking in a sandwich structure beam subjected to three point bending using the J integral concept”, Proceedings of the 7th GRACM International Congress on Computational Mechanics, National Center for Scientific Research “Demokritos”, Athens, Greece, 30 June – 2 July 2005, Organized by the Greek Association of Computational Mechanics, paper No_43 (2011).

  48. Theotokoglou, E.E. and Sideridis, E., "Nondestructive and destructive testing of reinforced polymaterials", Invited Keynote Lecture, Proceedings of the ICCES'12 International Conference on Computational & Experimental Engineering and Sciences, Chania, Crete Island, 29 April - 4 May, Greece, Paper: ICCES1220120406289 (2012).

  49. Theotokoglou, E.E. "Prediction of crack propagation in sandwich beams under flexural loading", Proceedings of ECCM15-15th European Conference on Composite Materials, Venice, Italy, 24 - 28 June 2012, Organized by the Department of Management of Engineering, University of Padova, Paper: 259 (2012).

  50. Nikolarakis A.M., Theotokoglou E.E. and Papathanasiou T.K.,“Finite element analysis of a functionally graded nickel-zirkonia profile under thermal loading”, Semi-Plenary Lecture, Proceedings of the 10th HSTAM International Congress on Mechanics, May 25-27, 2013, Chania,Crete, Greece, Hellenic Society of Theoretical and Applied Mechanics (HSTAM), Techical University of Crete, D.E. Beskos and E. Stavroulakis editors, paper 54 (2013).

  51. Theotokoglou, E.E. and Sideridis E., “Study of asymmetric glass Reinforce plastic beams in off-axis four point bending”, Proceedings the 3nd South –East European Conference on Computational Mechanics  (SEECCM 2013), Kos Island, Greece, 22-24 June 2013, M. Papadrakakis, M. Kojic and I. Tunker editors, paper 2014 (2013). (link)

  52. Theotokoglou, E.E., “New trends in the fracture of lightweight structures”, Keynote Lecture,Proceedings of the 13th International Conference of Fracture (ICF13), Beijing, China, June 16-21, 2013, Shouwen Yu and Xi-Qiao Feng, Editors, paper S28-013 (2013). (link)

  53. Papathanasiou, T. K., Karperaki, A., Theotokoglou, E. E. and   Belibassakis, K. A., “Hydroelastic analysis of ice shelves under long wave excitation”, European Geosciences Union General Assembly, Vienna, Austria 27 April-2 May, Poster EGU2014-819 (2014). (link)

  54. Theotokoglou, E.E., Sideridis, E. and Giannopoulos, I., “Analytical and computational solution of moduli and fracture of fiber reinforced composites”, Keynote Lecture, Proceedings of the 20th European Conference of Fracture (ECF20), Trondheim, Norway, 30thJune-04th July, (2014), Procedia Materials Science, Vol. 3, pp. 880-885 (2014). (link)

  55. Theotokoglou, E.E. and Tourlomousis, I., “Fracture of lightweight structures based on a combination of energy release rate balance and a cohesive”, Proceedings of the 8th GRACM International Congress on Computational Mechanics, Organized by the University of Thessaly and the Greek Association of Computational Mechanics, ISBN: 978-960-9439-36-7, University of Thessaly Press 2015, editors, N. Pelekasis and G. E. Stavroulakis, Volos, Greece, 12-15 July 2015. (link)

  56. Nikolarakis G. and Theotokoglou, E.E., “Transient stresses of a functionally graded profile with temperature dependent materials under thermal shock”, Proceedings of the 8th GRACM International Congress on Computational Mechanics, Organized by the University of Thessaly and the Greek Association of Computational Mechanics, ISBN: 978-960-9439-36-7, University of Thessaly Press 2015, editors, N. Pelekasis and G. E. Stavroulakis, Volos, Greece, 12-15 July 2015. (link)

  57. Theotokoglou, E.E. and Balokas, G., “Α micro scale structural response comparison between GFRP and CFRP wind turbine blades”, Proceedings of the 8th GRACM International Congress on Computational Mechanics, Organized by the University of Thessaly and the Greek Association of Computational Mechanics, ISBN: 978-960-9439-36-7, University of Thessaly Press 2015, editors, N. Pelekasis and G. E. Stavroulakis, Volos, Greece, 12-15 July 2015.(link)

  58. Theotokoglou, E.E., Giannopoulos, I. and Sideridis E. “Analytical, experimental and numerical approach of storage  and loss moduli  of fibre reinforced epoxy composites”, Proceedings of the 20th International Conference on Composite Materials (ICCM20), Copenhagen, Denmark, July 19-24 2015, Paper ID: P201-20 (2015). (link)

  59. Nikolarakis A.M., Theotokoglou E.E., “Transient thermal and stress waves of a functionally graded layer under a unified generalized thermoelasticity  theory”, Proceedings of the 11th HSTAM International Congress on Mechanics, May 27-30, 2016, Athens, Greece, Hellenic Society of Theoretical  and Applied Mechanics (HSTAM), National Technical University of Athens, H.G.Georgiadis and V.K. Koumousis editors, paper 30 (2016) (link)

  60. Stampouloglou  I.H., Theotokoglou E.E., “The radially inhomogeneous isotropic thermoelastic equal thickness spherical shell”, Proceedings of the 11th HSTAM International Congress on Mechanics, May 25-27, 2016, Athens, Greece, Hellenic Society of Theoretical and Applied Mechanics  (HSTAM), National Technical University of Athens, H.G.Georgiadis and V.K. Koumousis editors,paper 95 (2013) (link)

  61. Tourlomousiss I., Theotokoglou E.E., “Computational analysis of fractured sandwich composite structures under small scale yielding”, Proceedings of the 11th HSTAM International Congress on Mechanics, May 25-27, 2016, Athens, Greece, Hellenic Society of Theoretical and Applied Mechanics (HSTAM),     National Technical University of Athens,  H.G.Georgiadis and V.K.Koumousis editors, paper 97 (2013). (link)

  62. Theotokoglou, E.E. Balokas G., Savvaki E., “A numerical study for the buckling capacity of wind turbine blades: geometry, loading and material influence”, Keynote Lecture, Proceedings the ECCOMAS Congress 2016, 7nd European Congress on Computational Methods in Applied Sciences and     Engineering (ECCOMAS 2016), Crete Island, Greece, 5-10 June 2016, M.Papadrakakis Chairman, paper 7001 (MS 715-2, 2016).(link)

  63. Theotokoglou, E.E. Sideridis, E.P., “Study of unidirectional fiber reinforced epoxy composites in short – beam bending test”,Invited Lecture, Proceedings of the 17th International Conference on Experimental Mechanics (ICEM17), Rhodes Island, Greece, July 3-7, 2016, E. E. Gdoutos, Editor, paper 127 (T2.5, 2016) (link)

  64. Theotokoglou, E.E. and Papaefthimiou G., “Computational analysis of grouted connections”, Proceedings of the Twenty-seventh (2017) International Ocean and Polar Engineering Conference (ISOPE-2017), San Francisco, California, June 25-30, 2017, Vol. 4, pp.268-273 (17TPC-1231Theotokogl) (link)           

  65. Larkin,D., Giannopoulos, Ι. Κ. and Theotokoglou E.E.,    “Sensitivity of composite scarf joints to manufacturing deviation and disband under tensile loading”,  Proceedings of the 14th International Conference on Fracture Mechanics (ICF 14), Rhodes Island, Greece, June 18-23, 2017, E. E. Gdoutos, Editor, paper 402 (2017) (link)

  66. Theotokoglou E.E. and Tourlomousis, I., “A numerical investigation on energy methods in fracture mechanics applied on a cracked sandwich beam subjected in flexural loading”,  Proceedings of the 14th International Conference on Fracture Mechanics (ICF 14) Rhodes Island, Greece, June 18-23, 2017, E. E. Gdoutos, Editor, paper 740 (2017) (link)

  67. Bolyky, Α., Giannopoulos, Ι. Κ. and Theotokoglou E.E., “Micromechanical modeling and interfacial strength prediction of multidirectional laminated fibre reinforced polymers”,  ”, Keynote Lecture, Proceedings of the 14th International Conference on Fracture Mechanics (ICF 14), Rhodes Island, Greece, June 18-23, 2017, E. E. Gdoutos, Editor, paper 193 (2017) (link)

  68. Nikolarakis A. and Theotokoglou, E.E., “Dynamic analysis of a ceramic/metal functionally graded thermoelastic layer under ramp-type thermal loading”, Proceedings of the 9th GRACM International Congress on Computational Mechanics, Organized by the Greek Association of   Computational Mechanics and the Technical University of Crete, ISBN: 978-618-81537-5-2 (e-book), Technical University of Crete Press 2018, Editors, M. Papadrakakis  and G.E. Stavroulakis, Chania, Greece, 04 - 06 June, (2018) (link)

  69. Deskiewitz, A.W., Giannopoulos, I. K. and Theotokoglou, E.E., “Preliminary analysis method for FRP laminate impact damage size prediction” Proceedings of the 9th GRACM International Congress on Computational Mechanics, Organized by the Greek Association of Computational Mechanics and the Technical University of Crete, ISBN: 978-618-81537-5-2 (e-book), Technical University of Crete Press 2018, Editors, M. Papadrakakis  and G.E. Stavroulakis, Chania, Greece, 04 - 06 June, (2018) (link)

  70. Theotokoglou, E.E. and Mantzaroudis G., “Analysis of sandwich beams with homogeneous or graded cores undef flexural loading”, Proceedings of the 12th International Conference on Sandwich Structures (ICSS-12), ERFL-Lausanne 19-22 August 2018, Editors, T. Keller, S.Y.-Armas, L. A. Karlsson and Y. Frostig, ISBN: 978-2-8399-2435-1(e-book) (link)


D. BOOKS

  1. Tsamasphyros, G. and Theotokoglou, E.E.,

The Finite Element Method I,

Textbook for Undergraduate, Graduate Students and for Engineers (in Greek),

ISBN: 960-266-140-2,

Published by Symmetria, Greek Published Company, 2005.

The purpose of this book is to present and demonstrate the use of the finite element based methods for the solution of problems of engineering and applied sciences. The book contains material for a two semester course. The first volume I includes an introduction in the Finite Element Method (FEM), a general description of the FEM based on the displacement approach, truss and beam elements, plane stress and plain strain elements, axi-symmetric stress analysis, three dimensional stress analysis, isoparametric elements, general families of elements, plate (thin and thick plates) and shell elements, dynamics of structures, methods for the solution of large systems in the FEM, pre-processing and post-processing of data and other techniques in the FEM and a finite element program for the solution of plane stress and plane strain problems.


  1. Tsamasphyros, G. and Theotokoglou, E.E.,

The Finite Element Method II

Textbook for Undergraduate, Graduate Students and for Engineers (in Greek),

ISBN: 960-266-141-0

Published by Symmetria, Greek Published Company, 2005.

The second volume II includes buckling and large deflection of column and plane frame finite elements, the Finite Element Method (FEM) in non-linear material problems, Generalization of the FEM (Weighed residual methods, Rayleigh-Ritz method, Variational methods), Solution techniques of equilibrium equations in dynamic problems, Crack problems in the FEM, Fluid mechanics problems in the FEM (Incompressible and viscous incompressible flow), Application of the FEM in composite materials problems, Adaptive techniques in the FEM (Functional analysis, Error estimators, -h, -p ,-hp and –r methods).


  1. Panayotounakos, D.E., Theotokoglou, E.E. and Stampouloglou, I.H

Elastic Static Analysis of Smooth Shells

Textbook for Undergraduate, Graduate Students and for Engineers (in Greek),

ISBN: 960-330-512-X

Published by Fountas, Greek Published Company, 2006.

The purpose of this book is to present and analyze the elastic static behaviour of elastic shells under combined loading. The book contains material for a two semester course. It includes an introduction with the basic suppositions from the shell theory, the differential geometry of lines and surfaces, the bending theory of smooth shells (thick and thin), analytic methods for the solution of shells, applications in the case of thick and thin shells, the membrane theory of elastic shells the membrane theory in the case of shells in revolution and applications of the membrane theory in the case of shells in revolution.

     4.    Stampouloglou, I.H.  and Theotokoglou, E.E.,

 Theory of Coupled Fields

           Textbook for Undergraduate, Graduate Students and for Engineers (in Greek),

Published by the National Technical University of Athens, 2015.
        

         The purpose of this book is to introduce the basic mechanical problems concerning the interaction of the fields of elasticity, thermo elasticity
         and electro elasticity. In this part the theory of  elasticity and electro elasticity are presented; including the stress strain tensors, the equations          of compatibility, the energy theorems, the plane problems in elasticity, the complex analysis in plane elasticity, thermo elasticity and thermo          elastic potentials of displacements.

        

 

 

 

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