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Wyszukujesz frazę "squeeze-mode" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Analysis of force in MR fluids during oscillatory compression squeeze
Autorzy:
Horak, W.
Szczęch, M.
Sapiński, B.
Powiązania:
https://bibliotekanauki.pl/articles/386330.pdf
Data publikacji:
2017
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
MR Fluid
oscillatory squeeze mode
force
experiment
Opis:
This study investigates the behaviour of MR fluids in the oscillatory compression squeeze mode. Experiments were performed on commercially available MR fluids in the purpose-built experimental set-up. The influence of MR fluid’s properties and magnetic flux density on the force generated during the squeeze mode was investigated.
Źródło:
Acta Mechanica et Automatica; 2017, 11, 1; 64-68
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Investigation of MR fluids in the oscillatory squeeze mode
Autorzy:
Sapiński, B.
Horak, W.
Szczęch, M.
Powiązania:
https://bibliotekanauki.pl/articles/386783.pdf
Data publikacji:
2013
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
MR fluid
oscillatory squeeze mode
experiments
ciecz MR
doświadczenia
ciecz magnetoreologiczna
Opis:
The paper summarises the results of laboratory testing of three commercially available magnetorheological (MR) fluids operated in the oscillatory squeeze mode. Tested fluids include the Basonetic 204 and Basonetic 4035 (BASF) and MRF-122EG (Lord Corporation). The oscillatory squeeze mode produces large forces at small displacements. This feature may be well utilised in fabrication of new MR de-vices. The purpose of the experiments was to evaluate the suitability of MR fluids for applications in MR vibration dampers being devel-oped under the current research project. The results enable a comparative analysis of investigated fluids and verification of phenomena encountered in the oscillatory squeeze mode and reported in the literature.
Źródło:
Acta Mechanica et Automatica; 2013, 7, 2; 111-116
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Observations of MR fluid clumping behaviour in a squeeze-mode damper
Autorzy:
Sapiński, B.
Powiązania:
https://bibliotekanauki.pl/articles/386939.pdf
Data publikacji:
2016
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
MR fluid
squeeze mode
damper
clumping behaviour
tłumik drgań
płyny
mechanika płynów
Opis:
The study summarises the results of quasi-static experimental tests of an MR squeeze-mode damper prototype (MRSQD) performed at the MTS testing machine. Of particular interests was the influence of MR fluid clumping behaviour in the MRSQD working gap on the force output of the device. The MRSQD tests were assessed by measuring the damping force output at prescribed sinusoidal displacement inputs and at various (fixed) voltage levels resulting in the respective average current levels in the control coil. The influence of piston position offset on the damping force was also investigated. The collected data were shown in the form of damping force time histories and damping force-piston displacements loops and discussed with respect to MR fluid clumping behaviour.
Źródło:
Acta Mechanica et Automatica; 2016, 10, 3; 239-245
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical analysis of magnetorheological damper characteristics in squeeze mode
Autorzy:
Sapiński, B.
Powiązania:
https://bibliotekanauki.pl/articles/386653.pdf
Data publikacji:
2015
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
MR Damper
squeeze mode
gap
force
characteristic
silnik samochodowy
ciecz magnetoreologiczna
tłumik magnetoreologiczny
MR
Opis:
The paper summarises the theoretical study of a magnetorheological (MR) damper operated in squeeze mode, intended to be used as an actuator in a semi-active mount system in a car motor. The structural design and operating principle of the damper are described and a simplified model of the MR fluid flow in the gap is presented. The plots of the damper force generated by the MR damper are obtained for monoharmonic piston motion with respect to the centre point of the gap height and in the conditions of the control coil being supplied with direct current.
Źródło:
Acta Mechanica et Automatica; 2015, 9, 2; 89-92
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CFD model of a magnetorheological fluid in squeeze mode
Autorzy:
Sapiński, B.
Szczęch, M.
Powiązania:
https://bibliotekanauki.pl/articles/386683.pdf
Data publikacji:
2013
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
MR fluid
squeeze mode
CFD modeling
Bingham model
ciecz MR
ciecz magnetoreologiczna
model CFD
model Binghama
Opis:
The study briefly outlines a CFD model of a magnetorheological (MR) fluid operated in squeeze mode with a constant interface area using the CFD (Computational Fluid Dynamics) approach. The underlying assumption is that the MR fluid is placed between two surfaces of which at least one can be subject to a prescribed displacement or a force input. The widely employed Bingham model, which fails to take into account the yield stress variations depending on the height of the gap, has been modified. Computation data obtained in the ANSYS CFX environment are compared with experimental results.
Źródło:
Acta Mechanica et Automatica; 2013, 7, 3; 180-183
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of CFD to modeling of squeeze mode magnetorheological dampers
Autorzy:
Gołdasz, J.
Sapiński, B.
Powiązania:
https://bibliotekanauki.pl/articles/386699.pdf
Data publikacji:
2015
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
magnetorheological fluid
damper
squeeze-mode
computational fluid dynamics (CFD)
mesh animation
płyny magnetoreologiczne
amortyzator
tłumik
dynamika płynów
Opis:
The so-called squeeze flow involves a magnetorheological (MR) fluid sandwiched between two planar surfaces setting up a flow channel. The height of the channel varies according to a prescribed displacement or force profile. When exposed to a magnetic field of sufficient strength MR fluids develop a yield stress. In squeeze-mode devices the yield stress varies with both the magnetic field magnitude and the channel height. In this paper an unsteady flow model of an MR fluid in squeeze mode is proposed. The model is developed in Ansys Fluent R16. The MR material flow model is based on the apparent viscosity approach. In order to investigate the material's behaviour the authors prepared a model of an idealized squeeze-mode damper in which the fluid flow is enforced by varying the height of the channel. Using mesh animation, the model plate is excited, and as the mesh moves, the fluid is squeezed out of the gap. In the simulations the model is subjected to a range of displacement inputs of frequencies from 10 to 20 Hz, and local yield stress levels up to 30 kPa. The results are presented in the form of time histories of the normal force on the squeezing plate and loops of force vs. displacement (velocity).
Źródło:
Acta Mechanica et Automatica; 2015, 9, 3; 129-134
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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