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Ing. Ján Kopačka

Telefon +420 266 053 018 E-mail kopacka@it.cas.cz Místnost M2207 Oddělení Oddělení D 4 – Rázy a vlny v tělesech
Životopis
Education
2010 − present: Doctoral study at Faculty of Mechanical Engineering, CTU in Prague, study programme Mechanics of solids, deformable bodies and continua
2004 − 2010: Graduate study at Faculty of Mechanical Engineering, CTU in Prague, study programme Engineering mechanics and mechatronics
2000 − 2004: Secondary School of Engineering, VOŠ, SPŠ a OV Čáslav, study programme Mechatronics

Honors and Awards
2010: Babuška prize (1st place in master's thesis category)

Professional Experience
2013 − present: Design engineer in Research Center of Manufacturing Technology (60 %)
2010 − 2012: Design engineer in VAMET s.r.o. (60 %)
2009 − present: Research assistant in Institute of Thermomechanics AS CR, v. v. i. (40 %)

Scientific Societies Membership
Czech Society for Mechanics

View author's publications in the ASCR database
Vybrané publikace
ResearcherID: G-7841-2014

Impact Publications
J. Kopačka, A. Tkachuk, D. Gabriel, R. Kolman, M. Bischoff, J. Plešek, On stability and reflection-transmission analysis of the bipenalty method in contact-impact problems: a one-dimensional, homogeneous case study, in Int. J. Numer. Methods Eng., p, 1-25, 2017 (submitted).

R. Kolman, M. Okrouhlík, A. Berezovski, D. Gabriel, J. Kopačka, J. Plešek, B-spline based finite element method in one-dimensional discontinuous elastic wave propagation, in Applied Mathematical Modelling, vol. 46, p. 382-395, 2017, doi: 10.1016/j.apm.2017.01.077

J. Kopačka, D. Gabriel, J. Plešek, M. Ulbin, Assessment of methods for computing the closest point projection, penetration and gap functions in contact problems, in Int. J. Numer. Methods Eng., vol. 105, no. 11, p. 803-833, 2015, doi: 10.1002/nme.4994.

R. Kolman, S. V. Sorokin, B. Bastl, J. Kopačka, J. Plešek, Isogeometric analysis of free vibration of simple shaped elastic samples, in Journal of the Acoustical Society of America, vol. 137, no. 4, p. 2089-2100, 2015, doi: 10.1121/1.4916199.

Book characters
J.Kopačka, D. Gabriel, R. Kolman, J. Plešek, A large deformation frictionless contact treatment in NURBS-based isogeometric analysis, in series Computational and Experimental Methods in Structures - Advances in computational coupling and contact mechanics, publisher. World Scientific, 2017, (submitted).

Conference papers

J.Kopačka, D. Gabriel, R. Kolman, J. Plešek, On the contact pressure oscillations of an isogeometric contact-impact algorithm, in YIC GACM 2015, Aachen, Germany, July 20-22, 2015. pdf

J.Kopačka, D. Gabriel, R. Kolman, J. Plešek, Isogeometric contact analysis: A study of an explicit dynamic contact algorithm, in Proc. VKMKP 2014, Pilsen, Czech Republic, October 27, 2014. pdf

J. Kopačka, D. Gabriel, J. Plešek, R. Kolman, Influence of mass lumping techniques on contact pressure oscillations in explicit finite element contact-impact algorithm based on isogeometric analysis with NURBS, in Proc. SVCS International Symposium on Stability, Vibration, and Control of Machines and Structures, Belgrade, Serbia, July 3-5, 2014. link

J. Kopačka, D. Gabriel, R. Kolman, J. Plešek, M. Ulbin, Studies in numerical stability of explicit contact-impact algorithm to the finite element solution of wave propagation problems, in Proc. 4th ECCOMAS Thematic Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, Kos Island, Greece, June 12-14, 2013. pdf

J. Kopačka, R. Kolman, D. Gabriel, J. Plešek, Frictionless contact of elastic bodies: Comparison of treatment in finite element analysis and isogeometric analysis, in Proc. Engineering Mechanics 2012, Svratka, Czech Republic, May 14-17, 2012. pdf

J. Kopačka, D. Gabriel, J. Plešek, M. Ulbin, Utilising optimization methods for computing of normal vector to contact surface, in Proc. Engineering Mechanics 2010, Svratka, Czech Republic, May 10-13, 2010. pdf

Posters
J.Kopačka, D. Gabriel, R. Kolman, J. Plešek, Performance and implementation aspects of an isogeometric mortar-based contact algorithm, in MKP 2015, Prague, Czech Republic, November 26, 2015. pdf

J.Kopačka, D. Gabriel, R. Kolman, J. Plešek, On the contact pressure oscillations of an isogeometric contact-impact algorithm, in AC.CES 2015, Aachen, Germany, July 23-24, 2015. pdf

J.Kopačka, D. Gabriel, J. Plešek, M. Ulbin, Computation of the distance between a point and a quadratic surface with application in contact mechanics, in EUROMECH Colloquium 540, Advanced Modelling of Wave Propagation in Solids, Prague, Czech Republic, October 1-3, 2012. pdf

Master's Thesis
J. Kopačka, Assessment of numerical procedures for determination of the penalty function in contact problems, Master's thesis, 2010. pdf


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