Josef Voldřich
Born in Vimperk in 1956. He
completed his MSc. study of applied mathematics at the Faculty of Mathematics
and Physics, Charles University Prague in 1980. He achieved scientific degree
CSc. at the Mathematical Institute of the Academy of Sciences of the Czech
Republic in the mathematical analysis field in 1987. His advisor was prof.
Kufner. In the period 1981-1985 he was affiliated at the Department of
Mathematics, University of West Bohemia in Pilsen. In 1985 he was awarded by
the section for scientific and professional literature of the Czech literary
fund. During 1985-1995 he worked for Central Research and Testing Institute of
SKODA Pilsen as a researcher. He was dealing with development of FEM software
for the concern SKODA. After the embargo for the similar software packages
import had been overruled he specialized on problems of extreme loading
especially for nuclear engineering and power industry. He is the author of
large computations of strength and lifetime for a set of construction parts of
the upper blocks of the reactors VVER 440 and VVER 1000 for SKODA JS Inc. In
recent decade he is dealing with mathematical modeling of some problems of
transport engineering, facilities for radioactive waste safe transport and
storage, and problems of terminal ballistics in nuclear energetic. Since 2000
he is in the head of department at New Technologies Research Center, University
of West Bohemia in Pilsen, and since 2015 he is its vice director for R&D.
He participated in solving LN00B084 research project supported from the
Ministry of Education CR.
Professional activities since 2000 in
mechanical engineering
- Participation in the
vibration and noise analysis of the MQ200 gearbox for the development
department of SKODA Auto Inc.,
- author of the drop test
evaluation of the SKODA 440/84-M basket of transport and storage container
CASTOR for the spent nuclear fuel for SKODA JS Inc. and concern GNS,
cooperation in the development of the basket, author of the strength part of
the documentation for its licensing in Germany,
- participation in solving
actual problems of flanged connections and socket joints for the VVER reactor
class upper blocks including problems of new technology for sealing of this
joints by rings from expanded graphite, that was developed by SKODA JS Inc. and
implemented in a number of nuclear power plants,
- performing analysis of
dynamic effects of a large airplane impact on the reference transport and
storage containers, coauthor of the overall analysis of hypothetical terrorist
attack to the projected interim storage of spent nuclear fuel in the Temelín nuclear power plant location,
- cooperation in the
qualifying of problems of brake disc heating solved by the New Technologies
Research Center for the development department of SKODA Auto Inc. and for the
research department of Volkswagen AG in Wolfsburg,
- participation in solving
actual problems of mufflers of exhaust systems for the development department
of SKODA Auto Inc,
- author of the essay Brakes, thermal and thermoelastic analysis
published in Encyclopedia of Thermal
Stresses,
- author of software for the
nonlinear vibration analysis of bladed disks with friction contacts between
blades.
Further he authored or coauthored 142
closed research reports on mechanical engineering and applied mathematics. He
is the author of cca 70 reviews for the Mathematical Reviews of the American
Mathematical Society.
Publications:
[85] Voldřich J., Lazar J., Polach P., Morávka Š.: Finding the
stiffnesses of interface contact elements for the computational model of steam
turbine blading. ASME 2017 International
Design Engineering Technical Conferences and Computers and Information in
Engineering Conference, Volume 8: 29th Conference on Mechanical Vibration
and Noise, Cleveland, Ohio, USA, August 6-9, 2017. Paper No. DETC2017-67712,
pp. V008T12A018; 12 pages, doi:10.1115/DETC2017-67712, ISBN: 978-0-7918-5822-6
[84] Voldřich J., Lazar J., Míšek T., Kellner J.: Analýza nelineárních
vibrací rotujících disků s lopatkami LSB48 a LSB54. Turbostroje 2016, A.S.I. Doosan Škoda Power s.r.o., Západočeská
univerzita v Plzni, 2016
[83] Voldřich, J. – Lazar, J. – Polach, P.: Contact stiffnesses and
nonlinear vibration analysis of bladed disks with friction contacts between
adjacent blades. Proceedings of The 4th
Joint International Conference on Multibody System Dynamics, McGill
University, Montréal (Québec, Canada), USB flash drive, May 2016
[82] Očenášek J., Voldřich J.: Raman
thermometry: Effective temperature of the nonuniform temperature field induced
by a Gaussian laser. Journal of Applied
Physics 118, 233104(2015),1-6
[81] Očenášek J., Voldřich J.: One-dimensional mathematical model of the
whole process in a continuous srew press. Extended abstract, 31th conference Computational Mechanics
2015
[80] Voldřich J., Lazar J., Polach P.:
Nonlinear vibration analysis of steam turbine rotating wheel equipped with the
LSB48 blades. Proceedings of 2015 IFToMM
World Congress, October 25-30, 2015, Taipei, Taiwan
[79] Voldřich J., Lazar J.: The influence of
parameters of interface contacts elements of the LSB48 blade’s computational
model on the resonant frequencies of the bladed disc. In eds. 21th International Conference Engineering
Mechanics 2015, Svratka, Czech Republic, May 11-14, 2015. Paper #079, pp.
352-353. ISBN: 978-80-86246-42-0, ISSN: 1805-8248
[78] Polach, P., Voldřich, J., Hajžman, M.,
Dupal, J., Černý, J.: Dvakrát o turbínových lopatkách: výpočet vibrací a
defektoskopie. In Zvyšování životnosti komponent energetických zařízení v elektrárnách,
Sborník z 9. konference. Plzeň: Západočeská univerzita v Plzni, 2014, s. 55-60.
ISBN: 978-80-261-0406-3
[77] Voldřich, J., Polach P., Lazar J., Míšek T.: Use of cyclic symmetry
properties in vibration analysis of bladed disks with friction contacts between
blades. Procedia Engineering 96,
2014, 500-509. ISSN: 1877-7085
[76] Očenášek J., Voldřich, J.: One-dimensional
mathematical model of oil extraction process in a continuous screw press. Extended abstract, 30th
conference Computational Mechanics 2014
[75] Voldřich, J., Míšek T., Kellner J., Lazar J., Morávka Š.: Analýza
nelineárního kmitání olopatkovaných disků s kontaktními třecími vazbami
mezi lopatkami. Sborník konference TURBOSTROJE 2014, ASI-Turbostroje-Plzeň,
ISBN 978-80-260-6447-3
[74] Voldřich, J.: Brakes, thermal and thermoelastic analysis. In:
Hetnarski R. (Ed.), Encyclopedia of
Thermal Stresses, Vol 1, pp486-497, Springer Dordrecht, Heidelberg, New York, London 2014, DOI
10.1007/978-94-007-2739-7
[73] Voldřich, J., Morávka,
Š.: The calculation of friction damping of integral shrouded blades LSB 48“ for
torsional excitation of the disk. Extended abstract, 29th conference Computational Mechanics 2013
[72] Voldřich, J.: Couette slip flow with sideways pressure gradient for
non-Newtonian power-law fluid. 12th conference on Power System Engineering, Thermodynamics & Fluid Flow – ES2013,
June 13-14, 2013, Pilsen, ISBN 978-80-261-0230-4
[71] Voldřich, J., Morávka, Š.:
Contact stiffness modeling in numerical analysis of nonlinear vibrations of
bladed disks with friction contact interfaces. In: Vibration Problems ICOVP
2011, Supplement, The 10th International Conference on Vibration Problems, 2011
[70] Voldřich, J., Morávka,
Š.: An application of cyclic symmetry in analysis of nonlinear multiharmonic
vibrations of bladed disks with friction contact. Extended abstract, 26th
conference Computational Mechanics 2010, ISBN
978-80-7043-919-7
[69] Honner, M., Šroub, J.,
Švantner, M., Voldřich, J.: Frictionally excited thermoelastic instability
and the suppression of its exponential rise in disc brakes. Journal of Thermal Stresses, Vol. 33, 2010,
pp. 427-440. ISSN 0149-5739.
[68] Očenášek, J., Voldřich, J.: Mathematical
modeling of a biogenous filter cake and identification of oilseed material
parameters. Applied
and Computational Mechanics, Vol 3,
No.2, 2009, pp. 2339-2350. ISSN
1802-680X
[67]
Honner, M., Šroub, J., Voldřich, J.:
Frictionally excited thermoelastic instability and suppression of its
exponential rising in disc brakes. Proceedings of the 8th International
Congress on Thermal Stresses, TS2009,
1–4 June, University of Illinois at Urbana-Champaign, 305-308.
[66] Voldřich J.: Modelling of the
three-dimensional friction contact of vibrating elastic bodies with rough
surfaces. Applied and Computational
Mechanics 3 (2009) 241-252.
[65] Matas
R., Kňourek J., Voldřich J.: Influence of the terminal muffler geometry with
three chambers and two tailpipes topology on ist attenuation characteristics. Applied and Computational Mechanics 3
(2009) 121-132.
[64] Voldřich J.: Srážky a rázové děje v inženýrství. Ve sborníku: Modelování a měření interakcí
v mechanice, editor R. Matas, str. 237-260. Škoda Výzkum, s.r.o., a
ZČU Plzeň, Nečtiny, květen 2008. ISBN 978-80-02-02031-8.
[63]
Voldřich J., Lang V., Litoš P., Morávka Š., Šroub J.: Thermomechanical
Instabilities of Friction Systems – Measurements and Computations. National
conference with international participation Engineering
Mechanics 2008, Svratka, Czech Republic, May 2008, ISBN 978-80-87012-11-6.
[62]
Voldřich J.: Separation of contact in a sliding system with frictionally
excited thermoelastic instability. Applied
and Computational Mechanics 1 (2007) 357-362.
[61] Nový Z.,
Duchek M., Džugan J., Mentl V., Voldřich
J., Tikal B.: Zkoušky
vzorků tahokovu a počítačové modelování jejich mechanických vlastností. 45th International Conference EAN,
červen 4-7, 2007.
[60]
Voldřich J.: Frictionally excited thermoelastic instability in disc brakes –
transient problem in the full contact regime. International Journal of
Mechanical Sciences 49 (2007) 129-137.
60.pdf
[59] Voldřich
J.: Vibrace lopatek rotujících zařízení z pohledu matematického modelování. Výzkumná
zpráva NTC06-03/07, Nové technologie –Výzkuné centrum, ZČU v Plzni.
[58]
Voldřich J.: Počítačové modelování deformačních a napěťových odezev tahokovu. Výzkumná
zpráva NTC06-03/07, Nové technologie –Výzkuné centrum, ZČU v Plzni.
[57] Voldřich
J., Morávka Š., Študent J.: Transient temperature field in intermittent sliding
contact at temperature dependent coefficient of friction, Computational
Mechanics 2006 - 22th conference with international
participation, pp. 697-704. Nečtiny, ČR, listopad 2006. ISBN
80-7043-477-5 57.pdf
[56] Matas R.,
Voldřich J., Tikal B.: Užití metody konečných prvků pro stanovení účinnosti
akustických tlumičů, Computational Mechanics 2006 - 22th
conference with international participation, pp. 347-354. Nečtiny,
ČR, listopad 2006. ISBN 80-7043-477-5 56.pdf
[55] J. Voldřich, B. Tikal, J. Jankovec, M. Kepka,
S. Švéd, Z. Malkovský : Numerické simulace srážky lokomotivy 85EM s referenční
překážkou. Computational Mechanics 2005 - 21th conference
with international participation, Nečtiny, ČR, listopad 2005
[54] L. Pečínka, Š. Morávka, J. Voldřich: Lessons
learned from mathematical modeling of deep surface cracks and internal voids of
thick walled concrete structures using impact-echo method. The 4th
International Conference „Safety Assurance of Nuclear Power Plants with WWER“
, Podolsk, Moscow Region, Russia 23-25 May, 2005
[53] Voldřich J.,
Študent J., Adlerová J.: Computer aided modeling of temperature and stress
fields in control assembly nozzles attachment to reactor WWER440 pressure
vessel head, New Technologies - Research
Centre in the Westbohemian, 2004, University of
West Bohemia, Plzeň
[52] Morávka Š., Voldřich J.: Numerical simulation of the
nuclear power plants steel-concrete structures diagnostics by the
"Impact-echo" method, New
Technologies - Research Centre In The Westbohemian, 2004, University of
West Bohemia, Plzeň
[51] Voldřich J.:
Modelování nerovnoměrností ohřevu brzdového disku během brzdění,
Computational Mechanics 2004 - 20th conference with
international participation, Nečtiny, ČR, listopad 2004
[50] Morávka Š., Voldřich J.: Numerické modelování
diagnostiky různě hlubokých trhlin a plochých dutin betonových konstrukcí J.E.
metodou "IMPACT-ECHO", Computational Mechanics 2004 - 20th
conference with international participation, Nečtiny, ČR, listopad 2004
[49] Buchar
J.,Voldřich J., Rolc S.: Evaluation of the explosive technology of tube fixing,
In Proceedings of the grant workshop: Fracture Damage of Structural Parts,
September 2004, Ostrava, pp. 69–75. Published by VSB – TU Ostrava. ISBN 80 –
248 – 0615 – 0
[48]
Voldřich J.: Teplotní skvrny v brzdách (příklad nestability v inženýrské
praxi). Modelování a měření v termomechanice kontinua, 26.-29.5.
2004, Rybník. VTS Škoda Výzkum, Plzeň, 2004, ISBN 80-02-01654-8.
[47]
Voldřich J., Morávka Š.: Effect of surface layers on the propensity of
disk brakes to frictionally excited thermoelastic instability during extreme
braking, Engineering Mechanics 2004 – National conference with international
participation, Svratka, ČR, květen
[46] Morávka Š., Voldřich J.: Application the
"Impact-echo" method to the concrete structure diagnostic in NPP building, Engineering Mechanics
2004 – National conference with international participation, Svratka, ČR,
květen 2004
[45] Pečínka
L., Morávka Š., Voldřich J.:
Mathematical model of the propagation P, S and R-waves in a conctrete
thick walls with rebars and cracks. CSNI/RILEM Workshop on Use and
Performance of Concrete in NPP Fuel Cycle facilities, March 15-16 2004,
Madrid
[44] Buchar
J., Voldřich J., Rolc S.: Shock induced damage in austenitic stainless steel. 1st
International Symposium on Explosion, Shock Wave and Hypervelocity Phenomena
(ESHP Symposium), March 15-17, 2004, Kumamoto, Japan, Trans. Tech.
Publications, Switzerland-Germany-UK-USA, 2004, pp. 67-72. ISBN 0-87849-950-4. Materials
Science Forum Vols 465-466 (2004), pp. 67-73.
[43] Buchar J., Voldřich J.: Terminální
balistika. Academia, Praha 2003.
ISBN
80-200-1222- 2 43.pdf
[42] Morávka Š.,
Voldřich J.: Příspěvek numerické simulace k detekci armování a trhlin v
železobetonu, Computational Mechanics 2003 - 19th
conference with international participation, Nečtiny, ČR, listopad 2003
[41]
Voldřich J., Morávka Š.: Modelling of frictionally excited thermoelastic
instability in automoive disk brakes with vents. New Technologies - Research Centre In The
Westbohemian, 2003, p. 17-27, University of West Bohemia, Plzeň.
[40]
Voldřich J.: Impact of rotating long stiff missile and its transit through
target. New Technologies - Research
Centre In The Westbohemian, 2003, p. 9-15,
University of West Bohemia, Plzeň.
[39]
Voldřich J., Morávka Š.: Modelování třením vyvolané termoelastické nestability
v automobilových větraných diskových brzdách. Proceedings
of the 2nd International Conference on Dynamics of Civil Engineering and
Transport Structures and Wind Engineering, Žilina, 2003, p. 337-340.
[38]
Voldřich J., Morávka Š.: Analysis of frictionally excited thermoelastic
instability and hot spots in automotive disk brakes. Engineering Mechanics 2003 – National conference with international
participation, may 12-15 2003, Svratka
[37]
Voldřich J.: Neumann problem for elliptic equation in Sobolev power weighted
spaces. Mathematics and Computers in
Simulation, vol. 61 (2003) 199-207 37.pdf
[36]
Voldřich J.: Averaging over N-dimensional balls and Cauchy problem for
equations of mathematical physics. J. Math. Anal. Appl. 272 (2002)
582-595 36.pdf
[35] Buchar
J., Voldřich J.: Modeling of fast dynamic phenomena with dominant non-linear
material response. New Technologies -
Research Centre In The Westbohemian, 2002, p.15-20,
University of West Bohemia, Plzeň.
[34] Buchar
J., Voldřich J., Rolc S.: Response of concrete to the impact of fragments
simulating projectiles. 20TH
International Symposium on Ballistics, Lancaster, Pennsylvania, USA,
September 2002, p.1079-1086, DEStech Publications, Inc., USA.
[33] Buchar
J., Voldřich J., Rolc S.: Ballistics performance of the dual hardness armour. 20TH International Symposium on
Ballistics, Lancaster, Pennsylvania, USA, September 2002, p.1071-1078, DEStech
Publications, Inc., USA.
[32] Buchar
J., Voldřich J.: Identification of elastic properties of materials of larger
bodies.. 40th Interational
Conference Experimental Stress Analysis, Praha, June 2002, p.21-26, Czech
Technical University in Prague Faculty of Mechanical Engineering,
Department of Mechanics, Division of Strength of Materials, Czech Republic.
[31]
Voldřich J., Tikal B., Študent J.: Some computational simulations of impacts
and penetrations in nuclear engineering. New Technologies - Research Centre In
The Westbohemian, 2002, p.9-14, University of West Bohemia, Plzeň.
[30]
Voldřich J.: Průměrování přes koule a vybrané souvislosti. Modelování a měření v mechanice kontinua. Konstitutivní
vztahy, Nečtiny, červen 2002, str.117-124,
VTS ŠKODA VÝZKUM, Plzeň.
[29]
Voldřich J.: Termoelastická nestabilita ve větraném automobilovém kotouči
vyvolaná třením. 18. konference
s mezinárodní účastí Výpočtová mechanika 2002, Nečtiny, říjen 2002,
str.497-502, Západočeská univerzita v Plzni.
[28] Buchar J.,
Voldřich J., Rolc S.: Penetration process in the armour of dual hardness. Singapore University Press, Singapore
2001, ISBN 9810438311
[27] Buchar
J., Voldřich J., Rolc S.: Explosive loading of dual hardenss steel plates. Proceedings
of the 14th International
Symposium on Impact Engineering, 16 - 18 July, 2001 Kumamoto, Japan,
Eds.Akira Chiba, Shinji Tanimura and Kazuyuki Hokamoto, Elsevier, Amsterdam -
London - New York - Oxford - Paris - Shannon –
[26] Buchar
J., Rolc S., Voldrich J., Lazar M., Starek M. The development of the glass
laminates resistant to the small arms fire. 19th
International Symposium of Ballistics, Interlaken, Switzerland, May 2001.
[25] Buchar
J., Voldřich J.: Numerical simulation of the wood response to the high velocity
loading. 3rd European LS-DYNA
Conference, Paris 2001
[24] Voldřich J.: Influence of
dynamic material hardening on propagation of stress impulse through plastic
region. Proceedings of the 17 th
conference Computational Mechanics with International Participation,
Nečtiny 2001
[23] Zeman
V., Dupal J., Hlaváč Z., Kovář L., Voldřich J.: Vibration analysis of the car
gear-box. Engineering Mechanics 2001,
National Conference with International Participation. Svratka, ČR 2001
[22]
Voldřich J., Kovář L.: Evaluation of vibrations and sound power radiated by a
gear box. Proceedings of the 17 th
conference Computational Mechanics, Nečtiny 2001
[21] Buchar
J., Voldřich J. : Elastic response of shell to impact loading.The 2nd IMACS Conference on
Mathematical and Computational methods in Mechanics, Physics, Biomechanics and
Geodynamics. MODELLING 2001, Pilsen, June 25 – 29, 2001 – Sborník abstraktů
[20]
Očenášek J., Študent J., Voldřich J.: Computer simulations of waves in rod
after its impact against a rigid barrier. Proceedings
of the 17 th conference Computational Mechanics, Nečtiny 2001
[19]
Voldřich J., Gregor J., Študent J.: Stress and life-time analysis of reactor
VVER1000 JETE pressure vessel upper block units. Computational Mechanics 2000, 16th Conference with
International Participation
[18]
Voldřich J.: Fraktály – nový pohled na geometrii přírody. Modelování
a měření turbulence, Nečtiny 2000, VTS ŠKODA VÝZKUM, Plzeň, ISBN 80-238-5533-6.
[17] Holeček
M., Voldřich J.: Averaging over d-dimensional spheres. Proceeding of UWB, 1999
[16] Holeček
M., Voldřich J.: Averaging over spheres in scale-dependent models. 15th
conference Computational Mechanics 2000, Nečtiny 1999
[15]
Voldřich J.: Sálání v rotačně symetrických dutinách s pohlcujícím
prostředím. 14. konference Výpočtová mechanika 98, Pernink 1998. pp.271-276,
ISBN 80-7082-461-1
[14]
Martinec P., Voldřich J.: Výpočetní simulace rychlého dynamického děje pro
případ úlomku turbínové lopatky. 14. konference Výpočtová mechanika 98, Pernink
1998. pp.189-194, ISBN 80-7082-461-1
[13] Holeček
M., Malotín V., Martinec P., Peleška P., Voldřich J.: Turbine disintegration
debrits. International conference NUSIM 97, Trnava 1997
[12] Malotín V.,
Voldřich J.: Penetration of turbine body by flying torn blade. PAM 97 Proceedings, ESI Group 1997
[11] Voldřich J., Miler J.: An
implementation of thermoelastoplastic model in two dimensions. Proceedings of the 6th International
Conference, Mathematical methods in Engineering, Plzeň 1991
[10] Voldřich J.: Výpočtové metody
v mechanice kontinua. Mechanika ve
strojírenství, ČSVTS-ÚVZÚ s.p. ŠKODA Plzeň, 1990, str. 132-152.
[9] Miler J., Voldřich J.:
Geometrická nelinearita v MKP. Výpočtová
mechanika 87, VI. Uživatelský seminář, VŠSE Plzeň, 1987, str. 17-23.
[8] Voldřich J.: Užití Sobolevových
váhových prostorů k řešení eliptických okrajových úloh. Disertace, MÚ AV ČR, Praha, 1986 8.pdf