Dr. Cristian Făciu

Senior Researcher at the Institute of Mathematics ‘’Simion Stoilow’’ of the Romanian Academy,

Continuum Mechanics Workgroup

Last update: January 15, 2010

 

Contents

·       Research interest

·       Curriculum Vitae

o    Education

o    Postdoctoral stages

o    Employment

o    Professional affiliation

o    Awards

o    Session organizer

o    Visiting positions

o    Participations at international scientific meetings

o    Scientific and teaching activities

·       Publications

o     Book chapters

o     Journal articles

o     Conference proceedings

Mailing address:
Institute of Mathematics of the Romanian Academy,

P.O. Box 1-764, RO-014700, Bucharest, ROMANIA.

Fax: + 4021/319 65 06

Phone home: +4021/231 87 54   

E-mail :  Cristian.Faciu@imar.ro 

 

 

 

 

 

 

 

 

 

 

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Research interest:

·       Rate-type constitutive equations in viscoplasticity.

·       Wave propagation theory.

·       Dynamic problems in elasto-viscoplasticity; modeling and numerical solutions.

·       Phase transitions in solids and fluids.

·       Plastic instabilities, localization phenomena.

·       Gradient theories and the patterning of deformation.

·       Numerical methods for hyperbolic partial differential equations.

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Curriculum Vitae

Education:

  • 1989 - Ph. D. in Mathematics (Mechanics), Central Institute of Mathematics, Bucharest.

Title :  An energetic study of some initial-boundary value problems in viscoplasticity"

Advisor: Prof. I. Suliciu.
Committee: Prof. E. Soós, Prof. N. Cristescu, Prof. H. Ene.
Examination Fields:
Phenomenological thermodynamics with applications in solid mechanics.  Wave propagation theory.  (examiners: Prof. I. Suliciu, Prof. E. Soós, Prof. H. Ene)
Initial-boundary value problems for hyperbolic systems and numerical methods. (examiners: Prof. A. Halanay, Prof. I. Suliciu, Prof. H. Ene)

  • 1980 - Master (or, equivalent) in Solid Mechanics , University of Bucharest (1 year).
  • 1979 - Diploma in Mathematics, University of Bucharest (4 years).

 

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Postdoctoral stages:

 

  • Bourse de haut niveau accordée par le Ministère de la Recherche et de la Technologie de France à l’Institut National Polytechnique de Grenoble, Laboratoire Génie Physique et Mécanique des Matériaux, France, November 1990 – October 1991.
  • Alexander von Humboldt Research Fellowship at Technische Universität Berlin, Institut für Thermodynamik und Reaktionstechnik, March 1992 - July 1993 (Professor Ingo Müller).

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Employment:

  • - 1980 - 1983 mathematician at the Department of Mathematics of the National Institute for Scientific and Technical Creation (INCREST), Bucharest.
  • - 1983 - 1990 research fellow at the same department.
  • - 1990 - 1994 principal research fellow at the Institute of Mathematics of the Romanian Academy, Bucharest.
  • - 1994 - $~~~~$ senior research fellow at the same Institute.

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Professional affiliation

EUROMECH – European Mechanics Society

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Awards:

·       "Spiru Haret" prize of the Romanian Academy for the year 2006 (with  Prof. Alain Molinari) – attributed in 2008 for the papers on Dynamic-induced  Phase Transformations

·       Prize for Excellence in Research of the Romanian Society of Mathematicians, for the papers published in 1996.

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Session organizer:

 

  • Minisymposium: Strain localization and phase transition phenomena, 4th EUROMECH Solid Mechanics Conference, Metz, France, June 26-30, 2000.
  • Minisymposium: Mécanique du Solide, 8ième Colloque Franco-Roumain de Mathématiques Appliquées, Chambéry, 28 August - 1 September, 2006.

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Visiting Positions:

  • Université de Metz (Laboratoire de Physique et Mécanique des Matériaux), September 2002, March 2003, June 2004, April 2005, September 2006, September 2007, July 2008, January 2009 (Professor Alain Molinari).
  • Université de Poitiers (Laboratoire de Mécanique des Solides), Mai 2006 (Professor Claude Vallée)
  • Ecole Polytechnique Fédérale de Lausanne,  (programme SCOPE) December 2003, (Professor Tudor Ratiu).
  • Ecole Centrale de Lyon, Département de Mécanique des Solides, Mai 2000, Avril 2002, May 2004 (Professor Francois Sidoroff).
  • Technische Universität München, Zentrum Mathematik (Sonderforschungsbereich 438), October & November 2002 (Professor M. Brokate).
  • Weierstrass Institut, Berlin, March, 1998 (Professor K. Wilmanski).
  • Associate Professor at the Université de Metz, Laboratoire Physique et Mécanique des Matériaux, France, April 1996 - July 1996; April 1997 - July 1997; April 1998 - July 1998.
  • Université de Metz, Laboratoire de Physique et Mécanique des Matériaux, November1991 - January 1992. (Professor Alain Molinari)
  • Spring School - "Evolution Equations" (EVEC84'), Dobrichovice,  Czechoslovakia, May 1984.

·       Semester of mechanics, Banach Center, Warsaw, Poland, May 1981.

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Participations at international scientific meetings:

·       Euromech 175, "Viscoplasticity and Applications", September, 6-10, 1983, Bucharest.

Riemann and Goursat problems for one-dimensional classical plasticity.

 

·       The XIIth Symposium "Vibrations '86", Poznan, Poland, May, 15-17, 1986.

Riemann and Goursat problems in one-dimensional classical plasticity and their use for a numerical scheme of Godunov type.

 

·       "The 27th Polish Solid Mechanics Conference" and "Symposium of Inelastic Solids and Structures", Rytro, Poland, August 29 - September 3, 1988.

The free energy function and some energy estimation in one-dimensional dynamic viscoelasticity.

 

·       Euromech 263, "The effect of phase transformations in solids on constitutive laws", July, 2-4, 1990, Vienna, Austria.

Some aspects in modelling phase transitions by means of rate-type constitutive equations.

 

·       Euromech 282, 'Microscopic and macroscopic plastic deformation instabilities", July 7-11, 1991, Metz, France.

The modelling of softening and strain-localization by rate-type constitutive equations.

 

·       The European Symposium "Martensitic Transformations and Shape Memory Properties", Aussois, France, September 1991.

Stress induced phase transformations in rate-type viscoelasticity.

 

·       The 18th International Congress of Theoretical and Applied Mechanics, Minisymposyium on "Instabilities in Solid and Structural Mechanics", Haifa, Israel, August, 22-28, 1992.

Initiation and growth of strain bands in rate-type viscoelastic materials.

 

·       International Seminar MECAMAT '95, "Mechanisms and Mechanics of Solid-Solid Phase Transformations", May, 16-19, 1995, La Bresse, France.

Evolution of layered structures in a gradient-dependent viscoplastic material.

 

·       Istituto Nazionale di Alta Matematica Meeting " Mathematical Problems in the Thermodynamics of Continuous Systems", Cortona, Italy, September 30 – October 4, 1996.

A non-local rate-type approach compatible with the unmodi_ed continuum thermodynamics. Phase transition applications.

 

·       IUTAM Symposium on Material Instabilities in Solids, Delft, The Netherlands, 9-13 June, 1997.

A new rate-type gradient-dependent viscoplastic approach for the Portevin-LeChatelier effect.

 

·       EUROMECH-MECAMAT, 2nd European Mechanics of Materials Conference, Mechanics of Materials with Intrinsic Length Scale, Magdeburg, February 1998.

A new rate-type gradient-dependent viscoplastic approach to the kinetics of the Portevin-LeChatelier bands. Numerical vs. physical experiments.

 

·       EUROMECH Solid Mechanics Conference, Metz, France, June 26-30, 2000.

A Maxwellian approach for austenite-martensite phase transformation induced by longitudinal impact.

 

·       IUTAM Symposium on Material Instabilities and the Effect of Microstructure, Austin, Texas, May 7-11, 2001.

A rate-type thermo-viscoelastic approach for shape memory alloys.

 

·       Workshop on Shape Memory Alloys, Institute of Fundamental Technological Research Polish Academy of Sciences, Septembre 3-6, 2001, Warsaw, Poland.

On a rate-type thermo-mechanical model for shape memory bars. Strain-controlled problems.

 

·       NATO Advanced ResearchWorkshop, New Trends in Phase Transformations and their Applications to Smart Structures, Avril 23 -26, 2002, Metz, France.

Non-equilibrium thermodynamics of pseudo-elasticity and shape memory effect a rate-type constitutive approach.

 

·       Sudosteuropa-Tagung "Wissenschaftsdialog in Sudosteuropa zum Thema Neue Technologien", Zagreb, Croatia, Octobre 18-20, 2002.

On modeling shape memory alloys - a continuum rate-type approach.

 

·       EUROMECH Solid Mechanics Conference, Thessaloniki, Grece, August 17-22, 2003.

On describing thermo-mechanical instabilities accompanying phase transitions.

 

·       21st International Congress of Theoretical and Applied Mechanics, Warsaw, Poland, 15 - 21 August, 2004, Session “Mechanics of phase transformations”.

On modeling the longitudinal impact of two shape memory bars.

 

·       7i_ème Colloque Franco-Roumain de Mathématiques Appliquées, Craiova, Roumanie, 30 août - 3 septembre, 2004.

Invited speaker: Transformation de phases induite par l'impact longitudinal des barres. Structure des ondes.

 

·       8i_ème Colloque Franco-Roumain de Mathématiques Appliquées, Chambéry, France, 28 août -1er, septembre 2006.

Sur la propagation des ondes dans les fils extensibles en alliage à mémoire de forme.

 

·       The 10th European Mechanics of Materials Conference, Multi-phases and multicomponents materials under dynamic loading, June 11-14, 2007 Kazimierz Dolny, Poland.

Key-note lecture: On impact induced propagating phase boundaries. Thermal effects.

 

·       Euromech Colloquium 498, Nonlinear Dynamics of Composite and Smart Structures, May 21-24, Kazimierz Dolny, Poland, 2008.

Wave propagation and phase nucleation in phase-transforming strings.

 

·       9i_ème Colloque Franco-Roumain de Mathématiques Appliquées, Chambéry, Brasov, 28 août -2, septembre 2008.

The Goursat and Riemann problems for non-monotone elastic strings.

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Scientific and teaching activities

I have participated at permanent research seminaries in the field of interest at the Faculty of Mathematics and Mechanics of the University of Bucharest and at the Institute of Mathematics. I have participated in many scientific meetings in Romania. I was part time Assistant at the Faculty of Mathematics and Mechanics, teaching Theoretical Mechanics and Numerical Methods for Hyperbolic PDE's. I taught classes on viscoplasticity for graduate students at the University of Metz. I presented lectures at scientific seminars at the University of Montpellier II, Laboratoire de Mécanique et Génie Civil, at the University of Metz, Laboratoire de Physique et Mécanique des Matériaux, and at the Technical University of Berlin, Hermann Foettinger Institut fuer Thermodynamik und Fluiddynamik. I taught classes on Introduction to the Mechanics of Continuum Media for students in ''Maitrise Ingegnérie Mathématique'', at the University of Metz (April 1996 - July 1996; April 1997 - July 1997).

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Publications

 

Book chapters

  • C. Făciu and  M. Mihăilescu-Suliciu, On modelling exothermic/endothermic phase transformations in shape memory alloys, pp. 41-85, in  L. Badea, C. Faciu, L. Gratie, M. Mihailescu-Suliciu, D. Polisevski and N. Simion, Current Topics in Continuum Mechanics, Vol. II, Ed. Lazar Dragos, Editura Academiei, Bucharest, ISBN 973-27-0952-9, 2004. PS file

 

Journal articles

 

  • C. Făciu, Cinematic aspects in drawing problem (in Romanian), Studii  si Cercetari de  Mecanica Aplicata,  2: 265-274, 1981. PDF file

 

 

 

  • C. Făciu, Riemann and Goursat problems for one dimensional plasticity theory with isotropic work hardening, Revue Roumaine des Sciences Techniques. Serie de Mécanique Appliquée, 2:157-170, 1986. PDF file

 

 

  • C. Făciu, An energetic study of some initial-boundary value problems in viscoplasticity, Ph. D. Thesis, Central Institute of Mathematics, Romanian Academy, Bucharest, 1989.

 

 

 

 

 

 

  • C. Făciu and A. Molinari, Evolution of layered structures in a gradient-dependent viscoplastic material, Journal de Physique IV, 6, 45-54, 1996. PDF file

 

 

 

  • C. Făciu and A. Molinari, A non-local rate-type viscoplastic approach to patterning of deformation, Acta Mechanica, 126: 71-99, 1998. PDF file

 

  • C. Făciu, A. Molinari, M. Dablij, and A. Zeghloul, A new rate-type gradient-dependent viscoplastic approach to the kinetics of the Portevin-Le Châtelier bands. Numerical vs. physical experiments, Journal de Physique IV, 8: 143-150, 1998. PDF file

 

 

 

 

 

 

 

 

Conference Proceedings

 

  • C. Făciu and  M. Mihăilescu-Suliciu, Shape Memory Effect: A Maxwellian rate-type constitutive approach, pp. 139-145, In "New Trends in Continuum Mechanics'', Conference Proceedings Constanța, Romania, Theta Publisher, Bucharest, ISBN 073-85432-5-8, 2005. PS file

 

  • C. Făciu and A. Molinari, On modeling the longitudinal impact of two shape memory bars in ''Mechanics of the 21{st} Century'', Proceedings of the 21st International Congress of Theoretical and Applied Mechanics, Warsaw, Poland, 2004, Eds. W. Gutkowski and T.A. Kowalewski, 11852.pdf, Springer 2005, ISBN-10 1-4020-3559-4 (e-book), CD-Rom ISBN-1-4020-3456-3. PDF file

 

  • C. Făciu and A. Molinari, On impact induced propagating phase boundaries. Thermal effects, pp. 27-40, Eds. W. K. Nowacki, Han Zhao, Proceedings of the 10th European Mechanics of Materials Conference, Multi-phases and multi-components materials under dynamic loading, June 11-14, 2007 Kazimierz Dolny, Poland, ISBN 978-83-89687-16-6, Publisher IPPT - Polish Academy of Sciences, 2007. PDF file

 

  • C. Făciu and  M. Mihăilescu-Suliciu, On the dynamics of strings made of shape memory alloys, pp. 255-262, Proceedings of the Annual Symposium of the Institute of Solid Mechanics of the Romanian Academy, Ed. T. Sireteanu, ISSN-1843-5459, Editura Academiei, Bucharest, 2007. PDF file

 

·       C. Făciu and  M. Mihăilescu-Suliciu, Wave propagation and phase nucleation in phase-transforming strings, pp. 154-158,  In Nonlinear Dynamics of Composite and Smart Structures, Conference Proceedings Euromech Colloquium 498, Eds. J. Warminski, M.P. Cartmell, J. Latalski, Kazimierz Dolny, Poland, May 21-24, ISBN 978-83-88691-35-5, 2008.

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Pictures