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HOME/People/Faculty/Emeritus Faculty/Nicolas Triantafyllidis

Nicolas Triantafyllidis

Emeritus Professor Nicolas Triantafyllidis photo

Professor Emeritus

Aerospace Engineering

François-Xavier Bagnoud Aerospace Building 1320 Beal Avenue Ann Arbor, MI 48109-2140

nick@umich.edu

website

Education Teaching Biography Awards Publications

Education:

Brown University
PhD Engineering
MS Applied Math
MS Engineering

National Technical University of Greece
Diploma Civil Engineering

Teaching: ^top

Structural Mechanics I (AE 314)
Aircraft and Spacecraft Sturctures (AE 315)
Structural Mechanics II (AE 414)
Theory of Plates and Shells (AE 416)
Introduction to Finite Elements(AE 510)
Advanced Finite Elements(AE 511)
Nonlinear Continuum Solid Mechanics(AE 514)
Mechanics of Composite and Microstructured Media (AE 515)
Introduction to Structural Stability (AE 518)
Plasticity Theory -with Prof. W. Yang (AE 519)
Advanced Theory of Plates and Shells with Prof. R. Peek (AE 614)
Advanced Elastic & Plastic Stabiltiy (AE 618)

Biography: ^top

POSITIONS HELD AT MICHIGAN

  • Professor of Aerospace Engineering
  • Assistant Professor (October 1980)
  • Specializations and Research Interests
  • Continuum mechanics. Micromechanics. Structural mechanics. Structural stability. Manufacturing process modeling,
  • Numerical methods (f.e.m.), Geomechanics, Magneto-Electro-Mechanical coupling problems in solid.

Awards: ^top

HONORS AND AWARDS

  • Fellowship of the C.N.R.S. (French NSF) Awarded to foreign scientists to pursue research in France (2003)
  • Southwest Mechanics Lecture Series Speaker (2001)
  • Appointed Associate Editor for the ASME Journal of Applied Mechanics (2000)
  • Elected to the Board of Governors of the SES (Society of Engineering Science) (1999)
  • Research Fellowship Award, Ecole Polytechnique of France (1998)
  • Excellence in Research Award, Aerospace Engineering Department, University of Michigan (1997)
  • Fellowship of the CNRS (French NSF) awarded to foreign scientists to pursue research in French Institutions (1987-1988)
  • Elected Fellow of the ASME (1996)

SOCIETY MEMBERSHIPS

  • American Institute of Aeronautics and Astronautics
  • American Society of Mechanical Engineering
  • American Society of Civil Engineering
  • American Academy of Mechanics
  • Society of Engineering Science

Publications: ^top

  • “Void Growth and Local Necking of Biaxially Stretched Sheets,” (with A. Needleman), Journal Eng. Matls. & Technology, 100, 1978, pp. 164-169.
  • “Effects of Third Order Elastic Constants on the Buckling of Thin Plates,” (with X. Markenskoff), Intl. Journal Solids & Structures, 15, 1979, pp. 987-992.
  • “Bifurcation Phenomena in Pure Bending,” Journal Mech. Physics Solids, 28, 1980, pp. 221-245.
  • “An Analysis of Wrinkling in the Swift Cup Test,” (with A. Needleman), Journal Eng. Matls. & Technology, 102, 1980, pp. 241-248.
  • “On the Emergence of Shear Bands in Plane Strain,” (with R. Abeyaratne), Intl. Journal Solids & Structures, 17, 1981, pp. 1113-1134.
  • “On the Development of Shear Bands in Pure Bending,” (with A. Needleman & V. Tvergaard), Intl. Journal Solids & Structures, 18, 1982, pp. 121-138.
  • “On the Large Deformations of Elastic Materials with Non Elliptic Strain Energy Density Functions,” (with N. Kikuchi), Quarterly Appl. Math, 40, 1982, pp. 241-248.
  • “Instabilities of a Finitely Deformed Fiber Reinforced Elastic Material,” (with R. Abeyaratne), Journal Appl. Mech., 50, 1983, pp. 149-156.
  • “On the Bifurcation and Postbifurcation Analysis of Elastic-Plastic Solids Under General Prebifurcation Conditions,” Journal Mech. Physics Solids, 31, 1983, pp. 499-510.
  • “An Investigation of Localization in a Porous Elastic Material Using Homogenization Theory,” (with R. Abeyaratne), Journal Appl. Mech., 51, 1984, pp. 481-486.
  • “Surface Instabilities in Finitely Strained Solids Under Static Loading,” Intl. Journal Eng. Sci., 22, 1984, pp. 1187-1192.
  • “Puckering Instability Phenomena in the Hemispherical Cup Test,” Journal Mech. Physics Solids, 33, 1985, pp. 117-139.
  • “Effect of Debonding on the Stability of Fiber Reinforced Composites,” (with J. Barber), Journal Appl. Mech., 52, 1985, pp. 235-237.
  • “On the Comparison Between Microscopic and Macroscopic Instability Mechanisms in a Class of Fiber Reinforced Composites,” (with B. Maker), Journal Appl. Mech., 52, 1985, pp. 794-800.
  • “Bending Effects on Flow Localization in Metallic Sheets,” (with S. Samanta ), Proc. Roy. Soc. London, A 406, 1986, pp. 205-226.
  • “Gradient Approach to Localization of Deformation. I. Hyperelastic Materials,” (with E. Aifantis ), Journal of Elasticity, 16 , 1986, pp. 225-237.
  • “An Investigation of Draw Beads in Sheet Metal Forming. I- Theoretical Formulation,” (with B. Maker & S. Samanta ), Journal Eng. Matls. & Technology, 108, 1986, pp. 321-327.
  • “An Investigation of Draw Beads in Sheet Metal Forming. II- Experimental Results,” (with B. Maker, J. Grabb & S. Samanta ), Journal Eng. Matls. & Technology, 109, 1987, pp. 164-170.
  • “Thickness Effects on the Stability of Thin Walled Structures,” (with Y. J. Kwon), Journal Mech. Physics Solids, 35, 1987, pp. 643-674.
  • “Plastic Bifurcation and Postbifurcation for Generalized Standard Continua,” (with S. Q. Nguyen), Journal Mech. Physics Solids, 37, 1989, pp. 545-566.
  • “An Experimental Verification of the Hemispherical Cup Puckering Test,” (with M. Donoghue, Y. J. Kwon & R. Stevenson), Journal Eng. Matls. & Technology, 111, 1989, pp. 248-254.
  • “Scale Effects in the Optimal Design of a Microstructured Medium Against Buckling,” (with M. P. Bendsøe), Intl. Journal Solids & Structures, 26, 1990, pp. 725-741.
  • “Quelques Remarques sur Homogeneisation des Materiaux Elastiques Nonlineaires,” (with G. Geymonat & S. Muller), Comptes Rendus de l’ Academie des Sciences de Paris, Ser. I, 311, 1990, pp. 911-916.
  • “Interfacial Instability of Density-Stratified Two-Layer Systems Under Initial Stress,” (with F. Lehner), Journal Mech. Physics Solids, 41, 1993, pp. 117-142.
  • “On Stability and the Worst Imperfection Shape in Solids with Nearly Simultaneous Eigenmodes,” (with R. Peek), Intl. Journal Solids & Structures, 29, 1992, pp. 2281-2299.
  • “Worst Shape of Imperfection for Space Trusses with Many Simultaneous Buckling Modes,” (with R. Peek), Intl. Journal Solids & Structures, 29, 1992, pp. 2385-2402.
  • ” Homogenization for Nonlinear Elastic Materials, Microbuckling and Loss of Ellipticity,” (with G. Geymonat & S. Muller), Archive. Rat. Mechanics and Analysis, 122, 1993, pp. 231-290
  • “On Higher Order Gradient Continuum Theories in Nonlinear Elasticity Derivation from and Comparison to the Corresponding Discrete Models,” (with S. Bardenhagen ), Journal of Elasticity, 33, 1993, pp. 259-293.
  • “Comparison of Microscopic and Macroscopic Instabilities in a Class of Two Dimensional Periodic Composites ,” (with W. Schnaidt ), Journal Mech. Physics Solids, 41, 1993, pp. 1533-1565.’
  • “Stability of a Finite-Thickness Frictional Material Layer Resting on a Viscous Half-Space,” (with Y. Leroy), Journal Mech. Physics Solids, 42, 1994, pp. 51-110.
  • “Derivation of Higher Order Gradient Continuum Theories in 2,3-D Non-Linear Elasticity for Periodic Lattice Models,” (with S. Bardenhagen ), Journal Mech. Physics Solids, 42, 1994, pp. 111-139.
  • “Post-Bifurcation and Imperfection Sensitivity of Space Trusses With Many Simultaneous Buckling Bars and a Strongly Nonlinear Prebuckling Solution,” (with R. Peek), Eur. Jour. Mech. A/Solids, 14, 1995, pp. 721-745.
  • “Scale Size on the Stability of Periodic Solids and the Role of Associated Higher Order Gradient Continuum Models,” (with S. Bardenhagen ), Journal Mech. Physics Solids, 44, 1996, pp. 1891-1928.
  • “Stability of a Frictional Cohesive Layer on a Viscous Substratum: Variational Formulation and Asymptotic Solution,” (with Y. Leroy), Journal of Geophysical Research, B8, 101, 1996, pp. 17795-17811.
  • “Stability of a Frictional Cohesive Layer on a Viscous Substratum: Validity of Asymptotic Solution and Influence of Material Properties,” (with Y. Leroy), Journal of Geophysical Research, B9, 102, 1997, pp. 20551-20570
  • “Stability of Density-Stratified Two-Layers System,” (with P. Massin & Y. Leroy), Comptes Rendus de l’ Academie des Sciences de Paris, Ser. IIa, 322, 1996, pp. 407-413.
  • “A sufficient Condition for the Linear Instability of Strain-Rate Dependent Solids” (with P. Massin & Y. Leroy), Comptes Rendus de l’ Academie des Sciences de Paris, Ser. IIb, 324, 1997, pp. 151-157.
  • “Effects of Scale Size on Media with Periodic and Nearly Periodic Microstructures – I Macroscopic Properties,” (with M. Schraad), Journal Appl. Mech., 64, 1997, pp. 751-762.
  • “Effects of Scale Size on Media with Periodic and Nearly Periodic Microstructures – II Failure Mechanisms,” (with M. Schraad), Journal Appl. Mech., 64, 1997, pp. 762-771
  • “Onset of Failure in Aluminum Honeycombs Under Arbitrary In-Plane Loading,” (with M. Schraad), Journal Mech. Physics Solids, 46, 1998, pp. 1089-1124
  • Asymptotic Analysis of Stability for Prismatic Solids Under Axial Loads, (with W. Scherzinger ), Journal Mech. Physics Solids, 46, 1998, pp. 955-1007
  • Surface Bifurcation in Anisotropic Materials with Application to Aluminum Alloys, (with M. Nestorovic & E. Chu ), Journal Appl. Mech., 66, 1999, pp. 62-68
  • “On the Stability of Strain-Rate Dependent Solids I – Structural Examples, (with P. Massin & Y. Leroy), Journal Mech. Physics Solids, 47, 1999, pp. 1737-1779
  • On the Stability of Rate-Dependent Solids with Application to the Uniaxial Plane Strain Test, (with M. Nestorovic & Y. Leroy), Journal Mech. Physics Solids, 48, 2000, pp. 1476-1491
    Asymptotic Stability Analysis for Sheet Metal Forming – I Theory, (with W. Scherzinger ), Journal Appl. Mech., 67, 2000, pp. 685-690
  • Asymptotic Stability Analysis for Sheet Metal Forming – II Application, (with W. Scherzinger & E. Chu ), Journal Appl. Mech., 67, 2000, pp. 691-696
  • Stability of Pressure-Dependent, Thermally-Induced Martensitic Transformations in Bi-Atomic Crystals , (with R. Elliott & J. Shaw), Intl. Journal Solids & Structures, 39, 2002, pp. 3845-3856
  • Bifurcation and Stability of an Elastic Plate over an Inviscid and Buoyant Fluid, (with Y. Leroy & M. Guiton), Intl. Journal Solids & Structures, 39, 2002, pp. 3873-3891
  • Stability of Thermally-Induced Martensitic Transformations in Bi-Atomic Lattices,(with R. Elliott & J. Shaw), J. Mech. Phys. Solids, 50, 2002, pp. 2463-2493
  • Onset of Failure in Finitely Strained Layered Composites Subjected to Combined Normal and Shear Loading, (with M. Nestorovic) J. Mech. Phys. Solids 52, 2004, pp. 941-974
  • Onset of Necking in Electro-magnetically Formed Rings, (with J. Waldenmyer) J. Mech. Phys. Solids 52, 2004, pp. 2127-2148
  • On Finitely Strained Magneto-Rheological Elastomers, (with S. Kankanala ) J. Mech. Phys. Solids 52, 2004, pp. 2869-2908
  • On the Stability of Kelvin Cell Foams Under Compressive Loads,(with L. Gong & S. Kyriakides ) J. Mech. Phys. Solids 53, 2005, pp. 771-794
  • Failure Surfaces for Finitely Strained Two-Phase Periodic Solids Under Arbitrary Plane Strains, (with M. Nestorovic and M. Schraad) Journal Appl. Mech., 73, 2006, pp. 505-515
  • Stability of Crystalline Solids I: Continuum and Atomic Lattice Considerations,(with R. Elliott & J. Shaw) J. Mech. Phys. Solids 54, 2006, pp. 161-192
  • Stability of Crystalline Solids II: Application to Temperature-Induced Martensitic Phase Transformations in a Bi-Atomic Crystal , (with R. Elliott & J. Shaw) J. Mech. Phys. Solids 54, 2006, pp. 193-232
  • “Forming Limits for Electromagnetically Expanded Aluminum Alloy Tubes: Theory and Experiment,” (with J.D. Thomas, M. Seth, J. Bradley and G. Daehn) Acta Materialia, 55, 2007, pp. 2863-2873
  • “Post-Bifurcation Equilibria in the Plane Strain Test for a Hyperelastic Rectangular Block,” (with W.H. Scherzinger and H.-J. Huang) Intl. Journal Solids & Structures, 44, 2007, pp. 3700-3719
  • “Microscopic and Macroscopic Instabilities in Finitely Strained Porous Elastomers,” (with J.C. Michel, O. Lopez-Pamies and P. Ponte Castaneda) J. Mech. Phys. Solids, 55, 2007, pp. 900-938
  • “Theory of Necking Localization in Unconstrained Electromagnitc Expansion of Thin Sheets,” (with J.D. Thomas) Intl. Journal Solids & Structures, 44, 2007, pp. 6744-6767
  • “Surface Instability of an Elastic Half Space with Material Properties Varying with Depth,” (with D. Lee, J. Barber & M. Thouless), J. Mech. Phys. Solids, 56, 2008, pp. 858-868
  • “Magnetoelastic Buckling of a Rectangular Block in Plane Strain,” (with S. Kankanala), J. Mech. Phys. Solids, 56, 2008, pp. 1147-1169
  • “Superelasticity and Stability of a Shape Memory Alloy Hexagonal Honeycomb under In-plane Compression” (with P. Michailides, J.A. Shaw & D.S. Grummon) Intl. Journal Solids & Structures, 46, 2009, pp. 2724-2738
  • “On Electromagnetic Forming Processes in Finitely Strained Solids: Theory and Examples,” (with J.D. Thomas), J. Mech. Phys. Solids, 57, 2009, 1391-1416
  • “Comparison of Fully Coupled Modeling and Experiments for Electromagnetic Forming Processes in Finitely Strained Solids,” (with J.D. Thomas, A. Vivek, G.S. Daehn & J.R. Bradley), Int. Journal of Fracture, Submitted, 2009
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Research Area
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Aerospace Engineering
Aerospace Engineering

François-Xavier Bagnoud
Aerospace Building

1320 Beal Avenue

Ann Arbor, MI 48109-2140

Voice: (734) 764-3310

Fax: (734) 763-0578

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