XANTHIPPI MARKENSCOFF

Distinguished Professor
Solid Mechanics

Point of Contact Department of Mechanical & Aerospace Engineering University of California, San Diego 9500 Gilman Drive La Jolla, CA 92093-0411 E-Mail: xmarkens@ucsd.edu Office: 255 EBU II Phone: (858) 534-1337 FAX: (858) 534-5698

Symposia on New Developments in Defect Mechanics
formerly Symposia on Multi-Scale Dislocation Dynamics
Funded by the National Science Foundation
University of California in San Diego, La Jolla, CA
January 18-19, 2014
January 16-17, 2010
January 19-20, 2008

International Symposium on Current Problems in Solid Mechanics in Honor of Professor R. J. Clifton
Symi, Greece
June 24-29, 2012

International Colloquium on "Current Problems in Solid Mechanics"
Paris, France
July 4-5, 2011

The Micromechanics of Interfaces - an International Symposium in Honor of Professor Leon Keer
Symi, Greece
July 18-23, 2010

Education

Fellowships and Awards

• Doctor honoris causa and Gold Medal, National Technical University of Athens, Greece, June 2022
• Russell Severance Springer Distinguished Visiting Professor., Dept of Mech. Eng. University of California, Berkeley (Fall 2008)
• Visiting Senior Fellow, Christ Church College/Oxford University (Fall 2006)
• Directeur de Recherche (Visiting) Ecole Polytechnique, Paris, France (Fall 2004)
• Visiting Miller Professor, UC Berkeley (Fall 2003)
• Fellow, Society of Engineering Science (2002)
• Gold Medal for Science and Technology, Technical University of Crete (1999)
• Professor Honoris Causa Faculty of Mathematics & Mechanics, St. Petersburg State University, Russia (1997)
• Fellow, American Society of Mechanical Engineers (1994)
• Guest Professor at the Max-Planck Institute, Stuttgart (Fall 1983)
• Awarded the Wallace Memorial Fellowship in Engineering which "constitutes the highest award conferrable in the School of Engineering and Applied Science (Princeton University)" (1973)
• Ranked first at the nationwide university entrance examination and was awarded a merit scholarship by the Greek government

Current Research Topics

• Dynamic Phase Transformations Under High Pressure
• Deep-focus and Intermediate Earthquakes
• Dynamic Eshelby Micromechanics of Defects
• Expanding Inclusions, Evolution of Defects
• Asymptotic Homogenization
• Multiscale Dislocation Dynamics
• Conservation Laws and Configurational Forces
• Inverse Problems
• The Cosserat Spectrum Theory
• Singular Asymptotics for the Interaction of Defects; Thin Ligaments
• Instabilities in Coupled Systems

Research Areas and Publications List

Selected Publications

• X. Markenscoff "Phase transformation under high pressure radiates out as a Double Couple Deep Earthquake" J Geoph. Res. Solid Earth, under revision
• "Asymptotics for Thin Elastic Ligaments with Applications to Body Force and Thermal Loadings," (with L. Wu), J. Mech. Phys. Sol., Vol 45, pp 2033-2054, 1997. doi:10.1016/S0022-5096(97)00005-7
• "On Multiple Connectivity and Reduction of Constants for Composites with Body Forces," (with I. Jasiuk), Proc. Roy. Soc. London, Vol 454, 1998. DOI: 10.1098/rspa.1998.0211
• "The Wedge Paradox and a Correspondence Principle,"(with M. Paukshto), Proc. Roy. Soc. London Vol 454, pp 147-154, 1998. http://rspa.royalsocietypublishing.org/content/454/1968/147.abstract
• "On the Cosserat Spectrum in the Theory of Elasticity and Applications," (with M. Paukshto), Proc. Roy. Soc. London Vol 454, pp 631-643, 1998.  http://rspa.royalsocietypublishing.org/content/454/1970/631.full.pdf+html?sid=cc0b7c8f-7d5d-403b-bcfa-7b8e77b261fa
• "Inclusions with Constant Eigenstress," J. Mech. Phys. Sol. Vol. 46, pp. 2297-2301, 1998. doi:10.1016/S0022-5096(98)00039-8
• "Instabilities of a Thermo-Mechano-Chemical System," Quart. Appl. Math., Vol. 59, pp. 471-477, 2001. doi:10.1016/S0167-6636(02)00272-7
• "The Transient Motion of a Dislocation with a Ramp–Like Core," (with Luqun Ni), J. Mech. Phys. Sol., Vol. 49, pp. 1603-1619, 2001. doi:10.1016/S0022-5096(00)00062-4
• "The Geometry of Grasping," with L. Ni and C.H. Papadimitriou, Int. J. Rob. Res., 9, p. 61-74, 1990, Also presented at the XVII Int. Congr. Theor. Appl. Mech., Grenoble, 1988. http://ijr.sagepub.com/cgi/content/abstract/9/1/61
• "Some Properties of the Boundary Value Problem of Linear Elasticity in Terms of Stresses," (with V. Koucher and M. Paukshto), Journal of Elasticity, 74, 135-145, 2004. http://www.springerlink.com/content/l305057v2108832l/
• "Configurational Balance Laws for Incompatibility in Stress Space," w/ A. Gupta, Proc. Royal Soc., London, Proc. Royal Soc. A, London, 463, 1379-1392, 2007. http://rspa.royalsocietypublishing.org/content/463/2081/1379.full
• "The Self-Force and Effective Mass of a Generally Accelerating Dislocation I: Screw Dislocation" with Luqun Ni, J. Mech. Phys. Sol., Vol 56, pp 1348-1379. doi:10.1016/j.jmps.2007.09.002
• "Analysis of the Motion of a Screw Dislocation Accelerating through the Shear Wave Speed Barrier," with Surong Huang, J. Mech. Phys. Sol., Vol 56, pp 2225-2239. doi:10.1016/j.jmps.2008.01.005
• "The energy-release rate and self-force of dynamically expanding spherical and plane inclusion boundaries with dilatational eigenstrain" with Luquan Ni, J. Mech. Phys. Sol., Vol 58, pp. 1-11, 2010. http://dx.doi.org/10.1016/j.jmps.2009.10.001
• "'Driving forces' and Radiated Fields for Expanding/Shrinking Half-Space and Strip Inclusions with General Eigenstrain" with Luqun Ni, Quart. Appl. Math., Vol 69, pp. 529-548, 2011. http://www.ams.org/journals/qam/2011-69-03/S0033-569X-2011-01224-4/
• "A New Interpretation of Configurational Forces" with A. Gupta, J. Elast. Vol 108, pp. 225-228, 2012. http://link.springer.com/article/10.1007/s10659-011-9359-9
• "Asymptotic Homogenization Analysis for Damage Amplification due to Singular Interaction of Micro-cracks" with Cristian Dascalu, J. Mech. Phys. Sol. Vol 60, pp. 1478-1485, 2012. http://dx.doi.org/10.1016/j.jmps.2012.04.004
• "Asymptotic Homogenization Analysis for Damage Amplification due to Interaction of Micro-cracks" with Cristian Dascalu, J. Mech. Phys. Sol. Vol 60, pp. 1478-1485, 2012. http://mms.sagepub.com/content/19/1/71.full.pdf+html
• X. Markenscoff, Evolution of Growth of interacting near-by Micro-cavities and macroscopic Damage Amplification, J. Math. Mech. Sol, 19,71-81,2014.
• Xanthippi Markenscoff, John Dundurs, Annular Inhomogeneities with Eigenstrain and Interphase Modeling, Journal of the Mechanics and Physics of Solids, http://dx.doi.org/10.1016/j.jmps.2013.12.003.
• Ni and X.Markenscoff " On Self-similarly expanding Eshelby Inclusions: spherical Inclusion with dilatational Eigenstrain" Mechanics of Materials,10.1016/j.mechmat.2015.02.003.
• X. Markenscoff and S. Pal Veer Singh "Dynamic Conservation Integrals as dissipative Mechanisms in the Evolution of Inhomogeneities, Journal of Mechanics of Materials and Structures, Vol 10, 331-353, 2015.
• X. Markenscoff, Hadamard Instability Analysis of "negative Creep" in coupled chemo-thermo- mechanical Systems. J. Continuum Mechanics and Thermodynamics, 2015 http://link.springer.com/article/10.1007/s00161-015-0433-6
• L. Ni &. X.Markenscoff " The self-similarly expanding Eshelby ellipsoidal inclusion. I Field solution " J.Mech. Phys. Sol. doi.org/10.1016/j.jmps.2016.02.025
• L. Ni and X. Markenscoff " The self-similarly expanding Eshelby ellipsoidal inclusion.II.The dynamic Eshelby Tensor for the expanding sphere" J.Mech. Phys. Sol. http://dx.doi.org/10.1016/j.jmps.2016.02.023
• L.Ni and X. Markenscoff , "The dynamic generalization of the Eshelby inclusion problem and its static limit" Proc. Roy. Soc. A 472: 20160256., http://rspa.royalsocietypublishing.org/cgi/content/full/rspa.2016.0256?ijkey=U2ntRIqDxeh0tyF&keytype=ref
• X. Markenscoff, The properties of the self-similarly expanding Eshelby inclusion and application to the dynamic "Hill jump conditions" Math. Mech.Sol. (2015) http://mms.sagepub.com/content/early/2015/10/05/1081286515607094.full.pdf+html
• X. Markenscoff, "On the dynamic generalization of the anisotropic Eshelby ellipsoidal inclusion and the dynamically expanding inhomogeneities with transformation strain" J. Micromechanics and Molecular Physics, special Eshelby anniversary issue 01 1640001 (2016) DOI 10.1142/S2424913016400014 http://www.worldscientific.com/doi/pdf/10.1142/S2424913016400014
• X. Markenscoff and L. Ni "The driving force on the boundary of a self-similarly expanding Eshelby spherical inclusion" Int. J. Fracture Volume 202 Page 129-134 (2016) DOI 10.1007/s10704-016-0146-2https://link.springer.com/content/pdf/10.1007%2Fs10704-016-0146-2.pdf
• L. Bisconti, P-M Mariano and X. Markenscoff "A model for isotropic damage with strain gradient effects: existence and uniqueness of solutions for progressive damage processes, Mathematics and Mechanics of Solids, (2018) https://doi.org/10.1177/1081286518785423
• X. Markenscoff "Self-Similarly expanding regions of phase change yield dynamic cavitational instabilities and model deep earthquakes" J. Mech. Phys. Sol.https://doi.org/10.1016/j.jmps.2019.02.017 Click here
• X. Markenscoff, "Eshelby instability pressure for nucleation of a phase change defect", J.Mech. Phys. Sol. https://doi.org/10.1016/j.jmps.2020.104054, Click Here
• X. Markenscoff, "The M waves emitted by an expanding phase boundary create a "lacuna", J. Appl. Mech. ASME, 2020 https://doi.org/10.1115/1.4049222 Click Here
• X. Markenscoff, "Volume Collapse Instabilities in Deep Earthquakes: a Shear Source nucleated and driven by Pressure" J. Mech. Phys. Sol., in press, Feb 27, 2021, https://doi.org/10.1016/j.jmps.2021.104379 Click Here
• L. Ni and X. Markenscoff "The dynamic energy-momentum tensor and the logarithmic singularity of a generally accelerating edge dislocation" Journal of Applied Mechanics, ASME (2023) https://doi.org/10.1115/1.4062629
• X. Markenscoff "Phase transformation under high pressure radiates out as a Double Couple Deep Earthquake" (2023) J Geoph. Res. Solid Earth, https://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2023JB026797
• X. Markenscoff "Loss of pseudo-momentum, energy-release rate and the effective mass of a moving dislocation". (2023) Phil. Trans. R. Soc. A 381: 20230232. oi.org/10.1098/rsta.2023.0232

Professional Experience

• Distinguished Professor, University of California, San Diego (2013-present)
• Professor of Applied Mechanics, University of California, San Diego, La Jolla, California (1988-2013)
• Visiting Scientist, Harvard University, Spring 1997
• Visiting Professor of Engineering (Research), Brown University, Providence, Rhode Island (3/1989-8/1989)
• Professor of Mechanical Engineering, University of California, Santa Barbara, California (1987)
• Consultant in Robotics, Stanford University (1986-1987)
• Associate Professor of Mechanical Engineering, University of California, Santa Barbara, California (1981-1987)
• Visiting Associate Professor, Brown University, Providence, Rhode Island (9/1981-12/1981)
• Visiting Assistant Professor, Brown University, Providence, Rhode Island (9/1980-12/1980)
• Assistant Professor of Mechanical Engineering, Carnegie-Mellon University, Pittsburgh, Pennsylvania (l978-l980)
• Visiting Scientist, Alcoa Technical Center (Summ. and Fall, 1978)
• Adjunct Assistant Professor (Research), Brown University, Providence, Rhode Island (1/1978-7/1978)
• Visiting Assistant Professor (Research), Brown University, Providence, Rhode Island (7/1977-12/1977)
• Research Associate, Massachusetts Institute of Technology, Cambridge, Massachusetts (1977)
• Assistant Professor of Engineering Science and Mechanics, Virginia Polytechnic Institute and State University, Blacksburg, Virginia (l974-l976)

Editorial Boards

Journal: Mathematics and Mechanics of Solids (2012-Present)
International Journal for Multiscale Computational Engineering (2004-Present)
Journal of Applied Mechanics, ASME (1992-1997)
Journal of Computational Mechanics (1984-1986)