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Wyszukujesz frazę "vibration isolator" wg kryterium: Temat

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    Wyświetlanie 1-7 z 7
    Tytuł:
    Load-Dependent Controller of the Active Seat Suspension with Adaptive Mass Recognizing
    Autorzy:
    Maciejewski, I.
    Powiązania:
    https://bibliotekanauki.pl/articles/387077.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    vibration isolator
    active system
    adaptive control
    Opis:
    The paper deals with the load dependent control system of active seat suspension. This system based on the primary controller which evaluates the desired active force, the reverse model which calculates the input signal of force actuator and the adaptation mechanism which recognizes the actual mass loading. An optimisation procedure additionally presented in this paper allows to find the primary controller settings that minimizes the vibration of cabin's floor transmitted to operator's seat at the pre-defined value of the maximum relative displacement of suspension system.
    Źródło:
    Acta Mechanica et Automatica; 2012, 6, 2; 66-70
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the use of viscoelastic materials characterized by Bayesian inference in vibration control
    Autorzy:
    Préve, Cíntia Teixeira
    Balbino, Fernanda Oliveira
    Ribeiro Junior, Paulo Justiniano
    de Oliveira Lopes, Eduardo Márcio
    Powiązania:
    https://bibliotekanauki.pl/articles/1839679.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    viscoelastic material
    Bayesian inference
    vibration isolator
    viscoelastic dynamic neutralizer
    Opis:
    Viscoelastic materials are used to reduce vibrations in mechanical systems due to their con- trol efficacy. Considering that the dynamic behavior of those materials may be described by means of complex moduli, and experimental data may present ucertainties, an alternative is to use probabilistic methods, especially the Bayesian inference approach. By that approach, probability distribution functions are obtained for parameters of a model which describes the behavior of a given material. The present work employs a viscoelastic material modeled by the Bayesian approach in two vibration control actions, namely: a) use of vibration isolators; b) use of dynamic neutralizers. Transmissibility and receptance curves are displayed as well as dimensions of the control devices. Performance predictions are carried out in both cases. It is shown that the Bayesian approach can favourably reflect the presence of the uncertain- ties and advance their effects. Thus, more information can be provided for the designer of viscoelastic vibration control devices to anticipate eventual corrective measures.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2021, 59, 3; 385-399
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Investigation on a quasi-zero-stiffness vibration isolator under random excitation
    Autorzy:
    Wang, Y.
    Li, S.
    Cheng, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/281608.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    vibration isolator
    quasi-zero-stiffness
    random excitation
    dynamic analysis
    performance analysis
    Opis:
    The dynamic response and isolation performance of a Quasi-Zero-Stiffness (QZS) vibration isolator using inclined springs as negative stiffness correctors under random excitation are presented in this paper. The probabilistic linearization method is employed to determine the dynamic response of the QZS vibration isolator and compared with the exact solution based on the Fokker-Planck-Kolmogorov (FPK) equation and the equivalent linearization method. Two performance indexes (Mean Square Relative Displacement (MSRD) and Mean Square Acceleration (MSA)) are considered to evaluate the isolation performance of the QZS vibration isolator under random excitation and compared with the equivalent linear vibration isolator. The results show that the MSRD of the QZS vibration isolator is always lower than the equivalent linear vibration isolator, while the MSA of the QZS vibration isolator can be larger or lower than the equivalent linear vibration isolator based on the values of damping ratio and spectral density of the random excitation
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2016, 54, 2; 621-632
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Autonomous control system for a squeeze mode MR vibration isolatorin an automotive engine mount
    Autorzy:
    Rosół, M.
    Sapiński, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/386833.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    MR vibration isolator
    control system
    controller
    izolator drgań
    układ sterowania
    sterownik
    Opis:
    The investigated autonomous control system for a squeeze mode magnetorheological (MR) vibration isolator is based on an ultra-low power microcontroller MSP430F5529. The design structure of the control system and the dedicated real-time system are briefly presented and the laboratory testing data are summarised.
    Źródło:
    Acta Mechanica et Automatica; 2014, 8, 3; 121-124
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vibration isolators test bench
    Autorzy:
    Pobedin, A.
    Kosov, O.
    Shekhovtsov, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/244493.pdf
    Data publikacji:
    2011
    Wydawca:
    Instytut Techniczny Wojsk Lotniczych
    Tematy:
    vibration isolator
    test bench
    vehicle cabin
    suspension
    testing
    elastic and damping characteristic
    Opis:
    The description of the scheme and design of the test bench for testing vibration isolators intended for use in the vehicle's cabin suspension. Test bench construction allows to implement a wide range of loadings on vibration isolator of the vehicle cabin, to investigate the impact of the loading's arm changing and to perform analysis of the vibration isolator’s elastic and damping characteristics changing impact on cushioning quality. Variant of the test bench construction modernization, which can allow applying typical exploitation loads, which include vertical and lateral components, is described. We propose a scheme of forced oscillations excitation system on the test bench by cam-eccentric mechanism. It includes a DC motor with stepless frequency regulation and with cams of different shape on its shaft, which affect the contact surface of the test bench's vertical H-beam of a rocker arm. We also propose a scheme of forced oscillations excitation system on the test bench by inertial exciter. It includes a DC motor with stepless frequency regulation with inertial vibration exciter on its shaft, which consists of a mass, placed eccentrically relative to the shaft axis. There are two variants of the test bench scheme – with the forced oscillations excitation device and without it.
    Źródło:
    Journal of KONES; 2011, 18, 1; 457-462
    1231-4005
    2354-0133
    Pojawia się w:
    Journal of KONES
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Deformation of rubber-metal vibration and seismic isolators
    Deformirovanie rezinometallicheskikh vibrosejjsmoizoljatorov
    Autorzy:
    Kozub, Y.
    Powiązania:
    https://bibliotekanauki.pl/articles/792842.pdf
    Data publikacji:
    2012
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    deformation
    rubber-metal vibration
    vibration isolation
    viscoelasticity deformation
    building construction
    seismic isolator
    finite element method
    Źródło:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2012, 12, 4
    1641-7739
    Pojawia się w:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Response of two-storey RC frame with special base-isolation using Ruaumoko 2D program
    Autorzy:
    Alizada, A. M.
    Hamid, N. H.
    Yee, P. T. L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1849806.pdf
    Data publikacji:
    2020
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    izolator podstawy
    pętla histerezy
    przesunięcie między kondygnacjami
    przemieszczenie poprzeczne
    okres wibracji długi
    rama żelbetowa
    rejon sejsmiczny
    Ruaumoko 2D
    program komputerowy
    base isolator
    hysteresis loop
    inter-story drift
    lateral displacement
    vibration long period
    reinforced concrete frame
    seismic area
    software
    Opis:
    The control of structural vibrations due to ground motion can be done by the installation of a passive, active, and hybrid base isolation system. The primary function of the base isolator is to support the superstructure and provide huge horizontal flexibility and a long period of vibration. In this paper, a special HRDB base isolator is made from natural rubber with special elastic property and hardness. This base isolator is designed to support gravity loads of two-story RC building. The experimental hysteresis loop of this isolator is validated with analytical modeling hysteresis loop using Hysteresis program. The Bouc hysteresis rule was chosen as a model the hysteresis loop, and it is similar to experimental hysteresis loops. Later, a single bay two-story RC frame with a base isolation system was modeled using Ruaumoko 2D program subjected to three levels of earthquake excitations. After analyzing this frame under the 1994 Pacoima Dam Earthquake, the 1995 Kobe Earthquake and the 1940 El-Centro 1940 Earthquake. The numerical results show that this isolator is quite efficient in reducing the damage of structural and non-structural elements of the structure through minimizing inter-story drift, lateral displacement, and story acceleration. Therefore, this special HRDB based isolator is recommended to be used for low rise and medium-rise building in seismic regions.
    Źródło:
    Archives of Civil Engineering; 2020, 66, 4; 287-301
    1230-2945
    Pojawia się w:
    Archives of Civil Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-7 z 7

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