Project detail

Výzkum chování magnetoreologické kapaliny ve slit-flow reometru za podmínek vysokých smykových spádů a neustáleného toku

Duration: 01.01.2017 — 31.12.2018

Funding resources

Czech Science Foundation - Standardní projekty

- whole funder (2017-01-25 - 2018-12-31)

On the project

Náplní projektu je teoreticky popsat reologické chování magnetoreologické (MR) kapaliny ve slit-flow reometru, odvodit matematický postup pro určení reologických charakteristik z naměřených dat a porovnat naměřená data s modelem. Chování MR kapaliny bude odvozeno za podmínek aplikovaného magnetického pole a pro oblast vysokých smykových spádů, kde MR kapalina vykazuje viskoplastické chování. Model bude uvažovat neustálený tok MR kapaliny ve slit-flow reometru, který je vyvolán harmonickým pohybem pístu reometru. Klíčové výzvy výzkumu budou: (a) zahrnutí vlivu neustáleného toku MR kapaliny do modelu; (b) odvození matematického aparátu pro jednoznačné určení velikosti propagovaného jádra a (c) tomu odpovídající určení meze toku a smykové rychlosti pro Binghamský, biviskózní, Cassonův, Power-law a Herschel-Bulkleyho model.

Description in English
The project deals with a theoretical description of rheological behavior of magnetorheological (MR) fluid in the slit-flow rheometer, a derivation of mathematical method for determination of rheological characteristics based on measured data and comparison of measured data with the model. The behavior of MR fluid will be derived under applied magnetic field and at high shear rates, where MR fluid exhibits viscoplastic behavior. The model will consider an unsteady flow of MR fluid in the rheometer, which is induced by harmonic course of rheometer piston movement. The key challenges of the research will be: (a) including the influence of unsteady MR fluid flow into the theoretical model; (b) derivation of mathematical procedure for unambiguous determination of propagated core and (c) determination of corresponding yield stress and shear rate for Bingham, bi-viscous, Casson, Power-law and Herschel-Bulkley model.

Keywords
magnetoreologická kapalina;vysoké smykové spády;neustálený tok; slit-flow reometr;

Key words in English
magnetorheological fluid; high shear rates;unsteady flow;slit-flow rheometer;

Mark

GA17-26162S

Default language

Czech

People responsible

Roupec Jakub, Ing., Ph.D. - principal person responsible

Units

Institute of Machine and Industrial Design
- (2017-01-01 - 2018-12-31)

Results

KUBÍK, M.; MACHÁČEK, O.; ROUPEC, J.; STRECKER, Z.; MAZŮREK, I. Design and testing of magnetorheological valve with fast force response time and great dynamic force range. SMART MATERIALS & STRUCTURES, 2017, vol. 26, no. 4, p. 1-10. ISSN: 0964-1726.
Detail

MACHÁČEK, O.; KUBÍK, M.; NOVÁK, P. A NEW METHOD OF MAGNETORHEOLOGICAL DAMPER QUALITY EVALUATION. In ENGINEERING MECHANICS 2017. Praha: Institute of Thermomechanics Academy of Sciences of the Czech Republic, 2017. p. 594-597. ISBN: 978-80-214-5497-2.
Detail

STRECKER, Z.; STRMISKA, T.; ROUPEC, J.; KUBÍK, M.; MACHÁČEK, O. DESIGN OF FAST MAGNETORHEOLOGICAL DAMPER USING SOFT MAGNETIC COMPOSITES. In ENGINEERING MECHANICS 2017. DOLEJSKOVA 5, PRAGUE 8, 182 00, CZECH REPUBLIC: ACAD SCI CZECH REPUBLIC, INST THERMOMECHANICS, DOLEJSKOVA 5, PRAGUE 8, 182 00, CZECH REPUBLIC, 2017. p. 934-937. ISBN: 978-80-214-5497-2.
Detail

ROUPEC, J.; MAZŮREK, I.; STRECKER, Z.; KUBÍK, M.; MACHÁČEK, O. TENSILE STRENGTH OF PURE IRON SAMPLES MANUFACTURED BY SELECTIVE LASER MELTING METHOD. In ENGINEERING MECHANICS 2017. Praha: Institute of Thermomechanics Academy of Sciences of the Czech Republic, 2017. p. 830-833. ISBN: 978-80-214-5497-2.
Detail

MACHÁČEK, O.; KUBÍK, M.; STRECKER, Z.; ROUPEC, J.; NOVÁK, P.; MAZŮREK, I. Axial and Pressure Thrust Stiffness of Metal Bellows for Vibration Isolators. In MATEC Web of Conferences. MATEC Web of Conferences. 2018. p. 1-5. ISSN: 2261-236X.
Detail

KUBÍK, M.; MACHÁČEK, O.; ROUPEC, J.; STRECKER, Z.; NOVÁK, P.; MAZŮREK, I. Transient magnetic model of magnetorheological damper and its experimental verification. In ICMME 2017. MATEC Web of Conferences. MATEC web of Conferences, 2018. p. 1-5. ISSN: 2261-236X.
Detail

KUBÍK, M.; MACHÁČEK, O.; MAZŮREK, I. Magnetorehological fluid seal with minimum friciton torque. In ENGINEERING MECHANICS 2018. Engineering Mechanics .... Praha: Institute of Theoretical and Applied Mechanics of the Cech Academy of Sciences, 2018. p. 445-448. ISBN: 978-80-86246-88-8. ISSN: 1805-8256.
Detail

STRECKER, Z.; ROUPEC, J.; MAZŮREK, I.; MACHÁČEK, O.; KUBÍK, M. Influence of response time of magnetorheological valve in Skyhook controlled three-parameter damping system. Advances in Mechanical Engineering, 2018, vol. 10, no. 11, p. 1-8. ISSN: 1687-8140.
Detail

VÍTEK, P.; STRECKER, Z.; ROUPEC, J. DESIGN OF FAST MAGNETORHEOLOGICAL DAMPER USING SELECTIVE LASER MELTING TECHNOLOGY. In ENGINEERING MECHANICS 2018. Engineering Mechanics .... Praha: Institute of theoretical and applied mechanics of the Czech academy of Sciences, 2018. p. 905-908. ISBN: 978-80-86246-88-8. ISSN: 1805-8256.
Detail

MACHÁČEK, O.; KUBÍK, M.; ROUPEC, J.; STRECKER, Z.; MAZŮREK, I. MICRO-FLUIDIC SYSTEM WITH GROOVED POLE PIECES OF MAGNETIC CIRCUIT. In ENGINEERING MECHANICS 2018. Engineering Mechanics .... 24th INTERNATIONAL CONFERENCE. Prague: Institute of Theoretical and Applied Mechanics of the Czech Academy of Sciences, 2018. p. 521-524. ISBN: 978-80-86246-88-8. ISSN: 1805-8256.
Detail

MACHÁČEK, O.; KUBÍK, M.; STRECKER, Z.; ROUPEC, J.; MAZŮREK, I. Design of a frictionless magnetorheological damper with a high dynamic force range. Advances in Mechanical Engineering, 2019, vol. 11, no. 3, p. 1-8. ISSN: 1687-8132.
Detail

STRECKER, Z.; KUBÍK, M.; VÍTEK, P.; ROUPEC, J.; PALOUŠEK, D.; ŠREIBR, V. Structured magnetic circuit for magnetorheological damper made by selective laser melting technology. SMART MATERIALS & STRUCTURES, 2019, vol. 28, no. 55016, p. 1-13. ISSN: 0964-1726.
Detail

KUBÍK, M.; ROUPEC, J.; JENIŠ, F.; MAZŮREK, I. The settings of CFD model with magnetorheological fluid and its influence on the results. In Engineering Mechanics 2019, 25th International Conference. Praha: Institute of Thermomechanics of the Czech Academy of Sciences, 2019. p. 223-226. ISBN: 978-80-87012-71-0.
Detail

ŽELEZNÍK, T.; ROUPEC, J.; KUBÍK, M.; STRECKER, Z.; MAZŮREK, I.: REO e.IV; Slit-flow reometr pro magnetické a nemagnetické kapaliny. A2/412 B1/114A B1/112 A3/114. URL: http://intranet.ustavkonstruovani.cz/file-download/get-project-pdf/405. (funkční vzorek)
Detail

Responsibility: Roupec Jakub, Ing., Ph.D.