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Milan Jirásek and his research
Milan Jirasek     crack propagation in a gravity dam


I collaborate with Prof. Zdeněk P. Bažant on a new book entitled
"Creep and Hygrothermal Effects in Concrete Structures",
to be published by Springer.

My advanced course on Modeling of Localized Inelastic Deformation (LID 2014)
will take place in Prague on 15-19 September 2014.

Department of Mechanics
Faculty of Civil Engineering
Czech Technical University in Prague
Thakurova 7, 166 29 Prague, Czech Republic
Phone: +420-224 354 481
Fax: +420-224 310 775
E-mail: Milan.Jirasek@fsv.cvut.cz


Praha I graduated from the Czech Technical University in Prague in 1985, and then I accepted a teaching position at the Department of Mechanics of the Faculty of Civil Engineering. I was also taking math courses at Charles University
Northwestern In 1991 I started my graduate studies at Northwestern University under the supervision of Prof. Zdenek P. Bazant. My dissertation dealt with various aspects of quasibrittle fracture in concrete, rock, and ice. After graduation I went back to Prague for one year. 
Lausanne From 1994 till 2004 I worked as a research engineer at the Swiss Federal Institute of Technology at Lausanne (EPFL) in the Laboratory of Structural and Continuum Mechanics (LSC). I supervized two doctoral students, Simon Rolshoven and Peter Grassl.
Praha Since August 2004 I have been working as a professor in the Department of Mechanics of the Czech Technical University in Prague. Currently I supervise four doctoral students: Martin Horák, Petr Havlásek, Jan Stránský and Ondřej Čížek. I collaborate with my colleague Bořek Patzák on the development of OOFEM, an object-oriented finite element package.


Teaching activities:
 
teaching I have developed a short advanced course that I taught at various European universities. Since 2004, this course has been given every year in September in Prague. The next edition is going to take place in September 2014.

At the Czech Technical University in Prague, I regularly teach undergraduate courses on Strength of Materials, Structural Mechanics III and Deformation and Failure of Materials, and a graduate course on Universal Principles of Mechanics.

I contributed to the CISM course on Numerical Modeling of Concrete Cracking in Udine on 18-22 May 2009. The lectures have been published in the book on Numerical Modeling of Concrete Cracking.
I also presented three lectures at the COMMAS Summer School, Stuttgart, 11-12 October 2001, and a total of nine lectures at the Graduate School of ALERT Geomaterials, Aussois, 10-12 October 2002, 14-16 October 2004 and 11-13 October 2007. Six of the ALERT lectures have been published as papers in special issues of RFGC and REGC:
book cover In 2001 I finished a textbook on Inelastic Analysis of Structures, co-authored by Prof. Zdenek P. Bazant and published by John Wiley and Sons, Chichester.
Our next book on Creep and Hygrothermal Effects in Concrete Structures should be published by Springer in 2014.


Koyna Dam My research activities focus on numerical models for fracture and damage of concrete, including

Our research group participates in the activities
of the Nanocem consortium



My publications related to fracture and damage mechanics
of concrete and other quasibrittle materials include:


M. Jirásek and P. Havlásek:
Accurate approximations of concrete creep compliance functions based on continuous retardation spectra
Computers and Structures, 135 (2014), 155-168.

Z.P. Bažant, M.H. Hubler and M. Jirásek:
Improved estimation of long-term relaxation function from compliance function of aging concrete
Journal of Engineering Mechanics ASCE, 139 (2013), 146-152.

M. Jirásek, O. Rokoš and J. Zeman:
Localization analysis of variationally based gradient plasticity model
International Journal of Solids and Structures, 50 (2013), 256-269.

M. Jirásek and M. Bauer:
Numerical aspects of the crack band approach
Computers and Structures, 110-111 (2012), 60-78.

P. Havlásek and M. Jirásek:
Modeling of concrete creep based on microprestress-solidification theory
Acta Polytechnica, 52 (2012), 34-42.

Erratum to “Damage-plastic model for concrete failure”
by P. Grassl and M. Jirásek, International Journal of Solids and Structures, 48 (2011), 1084.

D. Davydov, M. Jirásek and L. Kopecký:
Critical aspects of nano-indentation technique in application to hardened cement paste
Cement and Concrete Research, 41 (2011), 20-29.

M. Charlebois, M. Jirásek and Ph. Zysset:
A nonlocal constitutive model for trabecular bone softening in compression
Biomechanics and Modeling in Mechanobiology, 9 (2010), 597-611.

M. Jirásek, J. Zeman and J. Vondřejc:
Softening gradient plasticity: Analytical study of localization under nonuniform stress
International Journal for Multiscale Computational Engineering, 8 (2010), 37-60.

P. Grassl and M. Jirásek:
Meso-scale approach to modelling the fracture process zone of concrete subjected to uniaxial tension
International Journal of Solids and Structures, 47 (2010), 957-968.

M. Jirásek and S. Rolshoven:
Localization properties of strain-softening gradient plasticity models. Part I: Strain-gradient theories
International Journal of Solids and Structures, 46 (2009), 2225-2238.

M. Jirásek and S. Rolshoven:
Localization properties of strain-softening gradient plasticity models. Part II: Theories with gradients of internal variables
International Journal of Solids and Structures, 46 (2009), 2239-2254.

M. Jirásek and P. Grassl:
Evaluation of directional mesh bias in concrete fracture simulations using continuum damage models
Engineering Fracture Mechanics, 75 (2008), 1921-1943.

P. Grassl and M. Jirásek:
Damage-plastic model for concrete failure
International Journal of Solids and Structures, 43 (2006), 7166-7196.
Note the erratum with corrections of a few misprints.

P. Grassl and M. Jirásek:
Plastic model with non-local damage applied to concrete
International Journal for Numerical and Analytical Methods in Geomechanics, 30 (2006), 71-90.

M. Jirásek and S. Marfia:
Nonlocal damage model based on displacement averaging
International Journal for Numerical Methods in Engineering, 63 (2005), 77-102.

M. Jirásek and P. Grassl:
Nonlocal plastic models for cohesive-frictional materials
Modelling of Cohesive-Frictional Materials, Proc. CDM-2004, ed. by P.A.Vermeer et al., A.A.Balkema Publishers, Leiden, The Netherlands, pp. 323-337.

P. Grassl and M. Jirásek:
On mesh bias of local damage models for concrete
Fracture Mechanics of Concrete Structures, Proc. FraMCoS-5, Vail, Colorado, 12-16 April 2004, pp. 255-262.

M. Jirásek, S. Rolshoven and P. Grassl:
Size effect on fracture energy induced by nonlocality
International Journal for Numerical and Analytical Methods in Geomechanics, 28 (2004), 653-670.

I. Carol, M. Jirásek and Z.P. Bažant:
A framework for microplane models at large strain, with application to hyperelasticity
International Journal of Solids and Structures, 41 (2004), 511-557.

B. Patzák and M. Jirásek:
Adaptive resolution of localized damage in quasibrittle materials
Journal of Engineering Mechanics ASCE, 130 (2004), 720-732.

M. Jirásek and S. Rolshoven:
Comparison of integral-type nonlocal plasticity models for strain-softening materials
International Journal of Engineering Science, 41 (2003), 1553-1602.

B. Patzák and M. Jirásek:
Process zone resolution by extended finite elements
Engineering Fracture Mechanics, 70 (2003), 957-977.

Z.P. Bažant and M. Jirásek:
Nonlocal integral formulations of plasticity and damage: Survey of progress
Journal of Engineering Mechanics ASCE, 128 (2002), 1119-1149.

M. Jirásek and T. Belytschko:
Computational resolution of strong discontinuities
Proc. WCCM-V, Vienna, Austria, 7-12 July 2002.

M. Jirásek and B. Patzák:
Consistent tangent stiffness for nonlocal damage models
Computers and Structures, 80 (2002), 1279-1293.

M. Jirásek and B. Patzák:
Models for quasibrittle failure: Theoretical and computational aspects
Solids, Structures and Coupled Problems in Engineering, Proc. ECCM-2001, Cracow, Poland, pp. 70--71 plus 20 pages on CD-ROM.

M. Jirásek:
Modelling of localized damage and fracture in quasibrittle materials
in Continuous and Discontinuous Modelling of Cohesive Frictional Materials, Lecture Notes in Physics 568, ed. P.A. Vermeer et al., Springer, Berlin, 2001, pp. 17-29.

I. Carol, M. Jirásek, and Z.P. Bažant:
A thermodynamically consistent approach to microplane theory. Part I: Free energy and consistent microplane stresses
International Journal of Solids and Structures, 38 (2001), 2921-2931.

M. Jirásek and Th. Zimmermann:
Embedded crack model: I. Basic formulation, II. Combination with smeared cracks
International Journal for Numerical Methods in Engineering, 50 (2001), 1269-1290 and 1291-1305.

M. Jirásek:
Conditions of uniqueness for finite elements with embedded cracks
International Conference on Computational Plasticity, Barcelona, 11-14 September 2000.

M. Jirásek:
Comparative study on finite elements with embedded cracks
Computer Methods in Applied Mechanics and Engineering, 188 (2000), 307-330.

Z.P. Bažant, M.D. Adley, I. Carol, M. Jirásek, S.A. Akers, B. Rohani, J.D. Cargile, and F. Caner:
Large-strain generalization of microplane model for concrete and application
Journal of Engineering Mechanics ASCE, 126 (2000), 971-980.

M. Jirásek:
Computational aspects of nonlocal models
Solids, Structures, and Coupled Problems in Engineering, ed. W. Wunderlich, Proceedings of the European Conference on Computational Mechanics, Munich, Germany, August 31 - September 3, 1999. (CD-ROM)

M. Jirásek:
Nonlocal damage models: Practical aspects and open issues
Proceedings of the 13th ASCE Engineering Mechanics Division Specialty Conference, Johns Hopkins University, Baltimore, June 13-16, 1999. (CD-ROM)

M. Jirásek:
Comments on microplane theory
Mechanics of Quasi-Brittle Materials and Structures, ed. G. Pijaudier-Cabot, Z. Bittnar, and B. Gérard, Hermès Science Publications, Paris, 1999, pp. 57-77.

M. Jirásek:
Finite elements with embedded cracks
LSC Internal Report 98/01, April 1998.

M. Jirásek:
Embedded crack models for concrete fracture
Proc. Computational Modelling of Concrete Structures (EURO-C),
Badgastein, Austria, March 31 - April 3, 1998,
ed. R. de Borst, N. Bicanic, H. Mang, and G. Meschke, Balkema, Rotterdam, 291-300.

M. Jirásek:
Element-free Galerkin method applied to strain-softening materials
Proc. Computational Modelling of Concrete Structures (EURO-C),
Badgastein, Austria, March 31 - April 3, 1998,
ed. R. de Borst, N. Bicanic, H. Mang, and G. Meschke, Balkema, Rotterdam, 311-319.

M. Jirásek and T. Zimmermann:
Analysis of rotating crack model
Journal of Engineering Mechanics ASCE, 124 (1998), 842-851.

M. Jirásek and T. Zimmermann:
Rotating crack model with transition to scalar damage
Journal of Engineering Mechanics ASCE, 124 (1998), 277-284.

M. Jirásek:
Nonlocal models for damage and fracture: Comparison of approaches
International Journal of Solids and Structures, 35 (1998), 4133-4145.

M. Jirásek and T. Zimmermann:
Rotating crack model with transition to scalar damage:
I. Local formulation, II. Nonlocal formulation and adaptivity,
LSC Internal Report 97/01, January 1997.

M. Jirásek:
Analytical and numerical solutions for frames with softening hinges
Journal of Engineering Mechanics ASCE, 123 (1997), 8-14.

Z.P. Bažant and M. Jirásek:
Softening-induced dynamic localization instability: Seismic damage in frames
Journal of Engineering Mechanics ASCE, 122 (1996), 1149-1158.

M. Jirásek and Z.P. Bažant:
Macroscopic fracture characteristics of random particle systems
International Journal of Fracture, 69 (1995), 201-228.

M. Jirásek and Z.P. Bažant:
Particle model for quasibrittle fracture and application to sea ice
Journal of Engineering Mechanics ASCE, 121 (1995), 1016-1025.

M. Jirásek and Z.P. Bažant:
Localization analysis of nonlocal model based on crack interactions
Journal of Engineering Mechanics ASCE, 120 (1994), 1521-1542.

Z.P. Bažant, M. Jirásek, Y. Xiang and P. Prat:
Microplane model with stress-strain boundaries and its identification from tests with localized damage
Proc. Computational Modelling of Concrete Structures (EURO-C),
Innsbruck, Austria, March 22-25, 1994,
ed. H. Mang, N. Bicanic and R. de Borst, Pineridge Press, Swansea, 255-261.

Z.P. Bažant and M. Jirásek:
R-curve modeling of rate and size effects in quasibrittle fracture
International Journal of Fracture, 62 (1993), 355-373.

M. Jirásek:
Modeling of Fracture and Damage in Quasibrittle Materials
Ph.D. Thesis, Northwestern University, Evanston, Illinois, 1993.

Last update on 14 February 2014 by Milan.Jirasek@fsv.cvut.cz