Dr. Stelios Kyriakides, P.E.
Professor of Aerospace Engineering and Engineering Mechanics
Director, Research Center for Mechanics of Solids, Structures & Materials
Brief Narrative
Professor Kyriakides received a B.Sc. degree in Aeronautical Engineering with first class honors in 1975 from the University of Bristol in the U.K. and graduate degrees in Aeronautics, with specialty in the mechanics of solids, from the California Institute of Technology (M.S. 1976, Ph.D. 1980). He joined the University of Texas at Austin in September 1980 where he was promoted to Associate Professor in 1985 and to Professor in 1989.
Dr. Kyriakides' major technical interests are in the mechanics of solids with an emphasis on instability at both the macro (structural) and micro (material) levels. His work is motivated by practical problems and usually involves combined experimental, analytical and numerical efforts. He has pioneered the area of propagating instabilities in solids, structures and materials. Such instabilities have been shown to govern the mechanical behavior of structures of larger size such as offshore pipelines, oil well casings and tunnel linings, long panels in pressure loaded structures, etc. This work was summarized in a monograph in the Advances in Applied Mechanics in 1993.
More recently, the problem area has seen a major expansion when it was shown that propagating necks in polymers, the compressive response and the spreading of crushing in cellular materials, propagating failure zones in the form of kink bands in composites, the propagation of phase transition fronts in shape memory alloys etc. are governed by the same underlying fundamental mechanism. Each of these problems is currently under study in his laboratory.
Kyriakides was recognized with the Presidential Young Investigator Award in 1984. Prompted by a requirement of this award, he started a long and productive involvement with the offshore oil and gas production industry. He has worked extensively on problems of plastic buckling of tubular structures used as pipelines, well casings, platform legs, tethers and downhole tubulars. Together with his students, he investigated this class of problems in depth and developed experimental data bases and analytical and numerical models which for several problems have become the benchmarks worldwide. Analysis of this class of practical problems starts with evaluation of the manufacturing procedures at the steel mills, of the procedures for installing them in the sea and end with evaluation of the performance of the structures under the operational loads they are exposed to. This volume of work has taken Kyriakides world wide (Brazil, Canada, Denmark, France, Germany, Israel, Italy, Japan, Norway, Portugal, The U.K., The Netherlands, Portugal) as a scholar but also as consultant to major oil companies, steel companies, construction companies etc.
CURRENT ADDRESS:
Center for Mechanics of Solids, Structures & Materials,
WRW 110, C0600
The University of Texas at Austin, Austin, Texas 78712
Tel. (512) 471-5963, Fax. (512) 471-5500,
E-MAIL: skk@mail.utexas.edu
EDUCATION:
Ph.D. In Aeronautics (Solid Mechanics), April 1980, California
Institute of Technology.
M.S. In Aeronautics, June 1976, California Institute of Technology.
B.Sc. First Class Honors, in Aeronautical Engineering, June 1975,
University of Bristol, Bristol, U.K.
ACADEMIC POSITIONS:
1996-present Director, Research Center for Mechanics of Solids,
Structures & Materials,
University of Texas at Austin.
9/89-present UT-Austin. Professor, Aerospace Engineering &
Engineering Mechanics.
1-6/1996 Visiting Scholar, Division of Applied Sciences, Harvard
University.
1-5/1990 Visiting Scholar, Aeronautics, California Institute
of Technology.
9/85-8/89 UT-Austin. Assoc. Prof., Aerospace Engineering &
Engineering Mechanics.
9/80-8/85 UT-Austin. Assist. Prof., Aerospace Engineering &
Engineering Mechanics.
4/80-8/80 California Institute of Technology. Research Fellow
in Aeronautics
HONORS AND AWARDS:
Temple Foundation Endowed Professorship No. 1 UT-Austin (1999-present)
Elected, Fellow of the American Society of Mechanical Engineers,
June 1997
Elected, Fellow of the American Society of Mechanical Engineers,
June 1997
Hayden Head Professorship in Engineering, UT-Austin (1996-99)
Walter L. Huber Civil Engineering Research Prize 1992
Outstanding Paper Award, ASME Div. Offshore Mechanics and Arctic
Engineering, 1991
Department of ASE/EM Excellence in Teaching Award, 1989-90.
Presidential Young Investigator Award, National Science Foundation,
1984-1989.
Engineering Foundation Centennial Teaching Fellowship, UT-Austin
(1984 - 1996).
Hele-Shaw Prize for 1974-1975 for Outstanding Academic Performance,
University of Bristol.
EDITORIAL BOARDS:
ASME Journal of Applied Mechanics
Int'l Journal of Plasticity
Int'l Journal of Non-linear Mechanics
NATIONAL AND INTERNATIONAL COMMITTEES:
1999 - Present, Member Executive Committee of the Applied
Mechanics Division of
the ASME
November 1998 - present, Member-at-Large US National Committee
on Theoretical
and Applied Mechanics (NRC)
July 1996-present, ASME, Applied Mechanics Division, Secretary
of ASME
Technical Committee Instability in Solids and Structures
RESEARCH INTERESTS:
Instability in Solids, Structures and Materials
Solid Mechanics, Composite Materials, Plasticity
Current Projects
Compressive Behavior of Fiber Composites
Large Deformation Behavior of Cellular
Materials
Material Characterization in Shape Memory Alloys
On the Dynamics and Arrest of Propagating Instabilities in Structures
Cyclic Plasticity and Cyclic Degradation of Structures
Stability Problems of Deep Water Tubular Structures
Optimization of Cold
Forming of Aluminum Extrusions
Propagation of Lüders
Bands
Mechanics of Offshore Pipelines
RECENT PUBLICATIONS
a. Monographs:
Kyriakides, S., "Propagating Instabilities in Structures." In Advances in Applied Mechanics,
Ed. by J.W. Hutchinson and T.Y. Wu, Vol. 30, pp. 67-189, Academic
Press, Boston, MA,
Oct. 1993.
b. Journal Papers:
Corona, E. and Kyriakides, S., "Asymmetric Collapse Modes of Pipes Under Combined
Bending and External Pressure." ASCE J. Engineering Mechanics (submitted).
Vogler, T.J. and Kyriakides, S., "On the Initiation and Growth of Kink Bands in Fiber
Composites: Part I Experiments." Int'l Journal of Solids & Structures (to appear).
Vogler, T.J., Hsu, S.-Y. and Kyriakides, S., "On the Initiation and Growth of Kink Bands in
Fiber Composites: Part II Analysis." Int'l Journal of Solids & Structures (to appear).
Miller, J.E., Kyriakides, S. and Bastard, A.H. "On Bend-Stretch Forming of Aluminum
Extruded Tubes: Part I Experiments." Int,l J. Mechanical Sciences (to appear).
Miller, J.E., Kyriakides, S. and Corona, E. "On Bend-Stretch Forming of Aluminum
Extruded Tubes: Part II Analysis." Int,l J. Mechanical Sciences(to appear).
Kyriakides, S. and Netto, T. A. "On the Dynamics of Propagating Buckles in Pipelines."
Int'l Journal of Solids & Structures (to appear)
Vogler, T.J , Hsu, S.-Y. and Kyriakides, S. "Composite Failure Under Combined
Compression and Shear." Int'l Journal of Solids & Structures 37:12, 1765-1791, 2000.
Netto, T.A. and Kyriakides, S., "Dynamic Performance of Integral Buckle Arrestors for
Offshore Pipelines. Part I Experiments." Int'l Journal
of Mechanical Sciences 42:7,
1405-1423, 2000
Netto, T.A. and Kyriakides, S., "Dynamic Performance of Integral Buckle Arrestors for
Offshore Pipelines. Part II Analysis." Int'l Journal
of Mechanical Sciences 42:7, 1425-
1452, 2000
Netto, T.A., Kyriakides, S. and Ouyang, X. "On the Initiation and Propagation of Buckles on
a Beam on a Nonlinear Foundation." ASME J. Applied Mechanics 66:3, 418-426, 1999.
Vogler, T.J. and Kyriakides, S. "Inelastic Behavior of an AS4/PEEK Composite
Under Combined Transverse Compression and Shear: Part I Experiments."
Int'l J. Plasticity
15, 783-806, 1999
Hsu, S.-Y., Vogler, T.J. and Kyriakides, S. "Inelastic Behavior of an AS4/PEEK Composite
Under Combined Transverse Compression and Shear: Part II Modeling."
Int'l J.
Plasticity 15, 807-836, 1999
Papka, S.D. and Kyriakides, S., "In-Plane Biaxial Crushing of Honeycombs: Part I
Experiments." Int'l Journal of Solids & Structures 36:29, 4367-4396, 1999.
Papka, S.D. and Kyriakides, S., "In-Plane Biaxial Crushing of Honeycombs: Part II
Analysis." Int'l Journal of Solids & Structures 36:29, 4397-4423, 1999.
Vogler, T.J and Kyriakides, S., "On the Axial Propagation of Kink Bands in Fiber
Composites. Part I Experiments." Int'l Journal of
Solids & Structures 36, 557-574,
1999.
Hsu, S.-Y., Vogler, T.J and Kyriakides, S., "On the Axial Propagation of Kink Bands in Fiber
Composites. Part II Analysis." Int'l Journal of Solids & Structures 36, 575-595, 1999
Papka, S.D. and Kyriakides, S., "Experiments and Full-Scale Numerical Simulations of In-
Plane Crushing of a Honeycomb." Acta Materialia 46:8, 2765-2776, 1998
Vogler, T. J. and Kyriakides, S., "On the Effect of Loading Rate on the Compressive
Strength of an AS4/PEEK Composite," ASME Journal of
Applied Mechanics 65:4, Dec.
1998
Kyriakides, S., Park, T.-D. and Netto, T.A., "On the Design of Integral Buckle Arrestors for
Offshore Pipelines." Applied Ocean Research 20, 95-114, 1998.
Papka, S.D. and Kyriakides, S., "In-plane Crushing of a Polycarbonate Honeycomb." Int'l
Journal of Solids & Structures 35, 239-267, 1998.
Papka, S. D. and Kyriakides, S., "In-plane Crushing of a Polycarbonate Honeycomb." In,
Proceedings IUTAM Symposium Material Instabilities in Solids,
June 1997, Delft, Ed.
R. de Borst and E. van der Giessen, Wiley, Chichester, England,
1998, pp. 159-183.
Hsu, S.-Y., Vogler, T. J. and Kyriakides, S., "Compressive Strength Predictions for Fiber
Composites." ASME Journal of Applied Mechanics 65:1, 7-16, 1998
Shaw, J. A. and Kyriakides, S., "Initiation and Propagation of Localized Deformation in
Elasto-Plastic Strips Under Uniaxial Tension." Int'l Journal of Plasticity 13:10, 809-835, 1998
Vogler, T.J. and Kyriakides, S., "Initiation and Axial Propagation of Kink Bands in Fiber
Composites." Acta Materialia 45:6, 2443-2454, 1997.
Kyriakides, S. and Ruff, A. E., "Aspects of Failure and Postfailure of Fiber Composites in
Compression." Journal of Composite Materials 31:20, 2000-2037, 1997.
Park, T.-D. and Kyriakides, S., "On the Design of Integral Buckle Arrestors for Offshore
Pipelines." Int'l Journal of Mechanical Sciences 39:6, 643-669, 1997
Shaw, J.A. and Kyriakides, S., "On the Nucleation and Propagation of Phase Transformation
Fronts in a NiTi Alloy." Acta Materialia 45:2, 683-700, 1997
Power, T.L. and Kyriakides, S., "Circumferential Stiffeners as Buckle Arrestors in Long
Panels." Int'l Journal of Solids and Structures 33, 1837-1851, 1996.
Shaw, J.A. and Kyriakides, S., "Thermomechanical Aspects of NiTi." Journal of the
Mechanics and Physics of Solids 43, 1243-1281, 1995.
Park, T.-D. and Kyriakides, S., "On the Collapse of Dented Cylinders Under External
Pressure." Int'l Journal of Mechanical Sciences 38, No. 5, 557-578, 1996.
Corona, E., Hassan, T. and Kyriakides, S., "On the Performance of Kinematic Hardening
Rules in Predicting a Class of Biaxial Ratcheting Histories."
Int'l Journal of Plasticity
12, No. 1, 117-145, 1996.
Kyriakides, S., Arseculeratne, R., Perry, E.J. and Liechti, K.M., "On the Compressive Failure
of Fiber Reinforced Composites." Int'l Journal of
Solids and Structures 32, No. 6/7, 689-
738, 1995.
Papka, S.D. and Kyriakides, S., "In-plane Compressive Response and Crushing of
Honeycomb." Journal of the Mechanics and Physics of Solids 41, No. 3, 571-592, 1994.
Power, T.L. and Kyriakides, S., "Localization and Propagation of Instabilities in Long
Shallow Panels Under External Pressure." ASME Journal
of Applied Mechanics 61, 755-
763, 1994.
Hassan, T. and Kyriakides, S., "Ratcheting in Cyclically Hardening and Softening Materials:
Part I Uniaxial Behavior." Int'l Journal of Plasticity 10, 149-184, 1994.
Hassan, T. and Kyriakides, S., "Ratcheting in Cyclically Hardening and Softening Materials:
Part II Multiaxial Behavior." Int'l Journal of Plasticity 10, 185-212, 1994.
Kyriakides, S., Corona, E. and Fischer, F. J., "On the Effect of the UOE Manufacturing
Process on the Collapse Pressure of Long Tubes." ASME
Journal of Engineering for
Industry 116, 93-100, 1994