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    Wyświetlanie 1-14 z 14
    Tytuł:
    Optimal positions of tunable translational and rotational dynamic absorbers in global vibration control in beams
    Autorzy:
    Łatas, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/279393.pdf
    Data publikacji:
    2015
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    dynamic vibration absorber
    beam vibration
    vibration reduction
    Opis:
    The paper discusses the problem of vibration of an Euler-Bernoulli beam with translational and rotational dynamic absorbers attached. The beam is subjected to concentrated and distributed harmonic forces. The equation of motion is solved using the Fourier method. The time Laplace transformation allows one to determine the amplitude-frequency characteristics of the beam deflection. The aim of the study is to examine the influence of positions of the translational and rotational dynamic absorbers on vibration suppression in the global control problem in beams. Numerical examples present reduction of kinetic energy of the cantilever beam with tunable absorbers over a wide range of frequencies. Optimal positions of the absorbers are obtained.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2015, 53, 2; 467-476
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Sound transmission of sandwich beams with the dynamic vibration absorbers
    Transmisja dźwięku poprzez płyty warstwowe z dynamicznymi absorberami drgań
    Autorzy:
    Diveyev, B.
    Kernytskyy, I.
    Kopytko, M.
    Konyk, S.
    Kogut, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/886602.pdf
    Data publikacji:
    2015
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    sound transmission
    beam
    dynamic vibration absorber
    noise
    vibration
    industrial machine
    Źródło:
    Scientific Review Engineering and Environmental Sciences; 2015, 24, 2[68]
    1732-9353
    Pojawia się w:
    Scientific Review Engineering and Environmental Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Impact and particle vibration absorbers optimal design
    Działanie oraz optymalna konstrukcja dynamicznego absorbera drgań
    Autorzy:
    Snitynskyy, V.
    Kernytskyy, I.
    Diveyev, B.
    Horbay, O.
    Koruniak, P.
    Humenyuk, R.
    Kokhana, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/2083884.pdf
    Data publikacji:
    2020
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    dynamic vibration absorber
    particle-based damping system
    buffered absorber
    optimization
    design
    Opis:
    The paper contemplates the provision of impact or particle dynamic vibration absorber (DVA). An efficient numerical approach based on the theoretical-experimental method is proposed to maximize the minimal damping of modes in a prescribed frequency range for general viscous tuned-mass systems. Methods of decomposition and numerical synthesis on the basis of adaptive schemes are considered. The influence of dynamic vibration absorbers and basic design elastic and damping properties is under discussion. Compact buffered impact absorbers are analysed. One task of this work is to analyse parameters identification of the dynamic vibration absorber and the basic structure. The work focused on a single degree of order (SDOF) system which is equivalent to particle DVA. The simulation provides a close agreement with the measurements over various entire frequency ranges, which means the SDOF is simple yet easy to calculate the damped motion, compared with the experimental results of particle DVA. Examples of the attachment of particle DVA’s and elongated element with multi-mass impact DVA’s are offered. The paper contemplates the provision of the impact multi-mass DVA’s with masses collisions and traction for additional damping. A technique is developed to give the optimal DVA’s for the elimination of excessive vibration in harmonic and impact loaded systems.
    Źródło:
    Acta Scientiarum Polonorum. Architectura; 2020, 19, 1; 93-102
    1644-0633
    Pojawia się w:
    Acta Scientiarum Polonorum. Architectura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    On the optimum absorber parameters: revising the classical results
    Autorzy:
    Puzyrov, V.
    Awrejcewicz, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/281548.pdf
    Data publikacji:
    2017
    Wydawca:
    Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
    Tematy:
    dynamic vibration absorber
    Den Hartog’s model
    frequency-amplitude curve
    optimization
    Opis:
    The dynamic vibration absorber is a kind of mechanical device with inertia, stiffness, and damping. Once connected to a given structure or machine, it is capable of absorbing vibratory energy. As a result, the primary system can be protected from excessively high vibration levels. In this paper, we deal with classical Den Hartog’s model to clarify the known results and improve the mathematical component of this approach. We suggest the optimal choice of absorber parameters, which is slightly different and more general analytical approach. The comparison of two methods of optimization is carried out, and the corresponding error of calculus is estimated.
    Źródło:
    Journal of Theoretical and Applied Mechanics; 2017, 55, 3; 1081-1089
    1429-2955
    Pojawia się w:
    Journal of Theoretical and Applied Mechanics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimisation of absorber parameters in the case of stochastic vibrations in a bridge with a deck platform for servicing pipelines
    Autorzy:
    Grosel, Jacek
    Podwórna, Monika
    Powiązania:
    https://bibliotekanauki.pl/articles/2037668.pdf
    Data publikacji:
    2021
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    urban network infrastructure
    dynamic vibration absorber
    DVA
    vibration effect
    dynamic analysis
    Poisson process
    random vibration
    Opis:
    The paper focuses on the problem of optimising the cooperation between a dynamic vibration absorber (DVA) and a structure. The authors analyse a road beam bridge equipped with a working platform (deck) used to service pipelines installed on the structure. The paper studies the problem of choosing the optimal parameters for damping absorbers that reduce the random vibration of a beam subjected to a random sequence of moving forces with a constant velocity. The stochastic properties of the load are modelled by means of a filtering Poisson process. A single-degree-of-freedom (SDOF) absorber model with a multi-degree-of-freedom (MDOF) primary structure model are is considered.
    Źródło:
    Studia Geotechnica et Mechanica; 2021, 43, s1; 492-500
    0137-6365
    2083-831X
    Pojawia się w:
    Studia Geotechnica et Mechanica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Multiple tuned tunable translational-rotational vibration absorbers in beam
    Autorzy:
    Łatas, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/128066.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    dynamic vibration absorber
    beam vibration
    vibration reduction
    dynamiczny pochłaniacz drgań
    drgania belki
    redukcja drgań
    Opis:
    The paper deals with vibration of the beam with a system of the translational-rotational dynamic vibration absorbers attached. The beam is subjected to the distributed and concentrated harmonic excitation forces. Assuming small and linear vibration, an analytical Euler-Bernoulli model is applied and the solution to the problem is found with the use of Fourier method. Performing time-Laplace transformation the displacement amplitude of arbitrary point of the beam may be written in the frequency domain. The aim of the paper is to investigate the improvement of the efficiency of the translational-rotational absorbers compared with the translational ones in global vibration control problems. As an example reduction of the kinetic energy of the host structure is considered. Numerical simulations shows a considerable improvement of vibration reduction when the translational-rotational absorbers are utilized.
    Źródło:
    Vibrations in Physical Systems; 2014, 26; 145-152
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Using of dynamic vibration absorbers for regulation of vibrating compactor vibration properties
    Wykorzystanie dynamicznych amortyzatorów wibracyjnych w celu regulowania charakterystyk wibracyjnych walców wibracyjnych
    Autorzy:
    Kernytskyy, I.
    Diveyev, B.
    Vybranets, J.
    Kernytskyy, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/40205.pdf
    Data publikacji:
    2008
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    dynamic property
    dynamic vibration absorber
    machine construction
    mathematical model
    optimization
    parameter model
    regulation
    vibration property
    Źródło:
    Acta Scientiarum Polonorum. Architectura; 2008, 07, 3
    1644-0633
    Pojawia się w:
    Acta Scientiarum Polonorum. Architectura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Distributed dynamic vibration absorber in beam
    Autorzy:
    Łatas, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/127662.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    distributed dynamic vibration absorber
    beam vibration
    vibration reduction
    dynamiczny pochłaniacz drgań
    drgania belki
    redukcja drgań
    Opis:
    The paper deals with forced vibration of Euler-Bernoulli beam with variable cross-section equipped with a distributed dynamic absorber. The beam is subjected to the concentrated and distributed harmonic excitations. The problem is solved using Galerkin’s method and Lagrange’s equations. Performing time-Laplace transformation the displacement amplitude of arbitrary point of the beam may be written in the frequency domain. The aim of the paper is to find the effectiveness of the distributed vibration absorbers in beams. As an example numerical results of vibration reduction in wind turbine’s tower are presented.
    Źródło:
    Vibrations in Physical Systems; 2014, 26; 137-144
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Acoustical properties of layered beams with attached dynamic vibration absorbers
    Właściwości akustyczne belek wielowarstwowych z przyłączonymi dynamicznymi absorberami
    Autorzy:
    Divejev, B.
    Kernytskyy, I.
    Grygoryshyn, O.
    Kogut, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/887075.pdf
    Data publikacji:
    2012
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    acoustic property
    layered beam
    beam
    sound transmission
    laminated structure
    dynamic vibration absorber
    noise
    Źródło:
    Scientific Review Engineering and Environmental Sciences; 2012, 21, 4[58]
    1732-9353
    Pojawia się w:
    Scientific Review Engineering and Environmental Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of the continuous dynamic absorbers in local and global vibration reduction problems in beams
    Autorzy:
    Łatas, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/128152.pdf
    Data publikacji:
    2016
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    tuned mass damper
    dynamic vibration absorber
    continuous absorber
    beam vibration
    vibration control
    tłumik masowy strojony
    dynamiczny pochłaniacz drgań
    drgania belki
    sterowanie drganiami
    Opis:
    The paper deals with the application of the continuous dynamic absorbers in vibration reduction problems in beams. The Euler-Bernoulli beam of variable cross-section is subjected to the concentrated and distributed harmonic excitation forces. The beam is equipped with a system of the continuous vibration absorbers. The problem of the forced vibration is solved employing the Galerkin’s method and Lagrange’s equations of the second kind. Performing time-Laplace transformation the amplitudes of displacement may be written in the frequency domain, similarly the time-averaged kinetic energy of any part of the beam. The results of some local and global vibration control optimization problems concerning the placement and parameters of the continuous vibration absorbers are presented.
    Źródło:
    Vibrations in Physical Systems; 2016, 27; 245-254
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimal configuration and parameters of translational dynamic vibration absorbers in vibroisolation of mechanical press
    Autorzy:
    Łatas, Waldemar
    Dziechciowski, Zygmunt
    Powiązania:
    https://bibliotekanauki.pl/articles/2146578.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Poznańska. Instytut Mechaniki Stosowanej
    Tematy:
    dynamic vibration absorber
    discrete system vibration
    machine vibration isolation
    dynamiczny pochłaniacz drgań
    drgania układów dyskretnych
    izolacja drgań maszyny
    Opis:
    The paper deals with the problem of optimizing the positions and parameters of dynamic vibration absorbers for a mechanical press subjected to polyharmonic inertial excitation. Under the assumption of small vibrations a linear dynamic model of a rigid body performing a planar motion, on viscoelastic supports, with an attached system of translational tuned mass dampers is constructed. The problem of vibroisolation of the machine is presented, considering selected harmonics of the force transmitted to the ground, the solutions with a single DVA are proposed.
    Źródło:
    Vibrations in Physical Systems; 2020, 31, 3; art. no. 2020314
    0860-6897
    Pojawia się w:
    Vibrations in Physical Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Optimization of the impact multi-mass vibration absorbers
    Autorzy:
    Kernytskyy, I.
    Diveyev, B.
    Horbaj, O.
    Hlobchak, M.
    Kopytko, M.
    Zachek, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/886928.pdf
    Data publikacji:
    2017
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Tematy:
    impact damping system
    multi-mass
    dynamic vibration absorber
    optimization
    simultaneous optimization
    genetic algorithm
    Boltzmann approximation
    Opis:
    Optimization of the impact multi-mass vibration absorbers. The problem of attaching dynamic vibration absorber (DVA) to a discrete multi-degree-of-freedom or continuous structure has been outlined in many papers and monographs. An impact damping system can overcome some limitations by impact as the damping medium and impact mass interaction as the damping mechanism. The paper contemplates the provision of DVA with the several of the impact masses. Such originally designed absorbers reduce vibration selectively in maximum vibration mode without introducing vibration in other modes. An impact damper is a passive control device which takes the form of a freely moving mass, constrained by stops attached to the structure under control, i.e. the primary structure. The damping results from the exchange of momentum during impacts between the mass and the stops as the structure vibrates. The paper contemplates the provision of the impact multi-mass DVA’s with masses collisions for additional damping. For some cases of DVA optimization such a design seems more effective than conventional multi-mass DVA with independent mass moving. A technique is developed to give the optimal DVA’s for the elimination of excessive vibration in harmonic stochastic and impact loaded systems.
    Źródło:
    Scientific Review Engineering and Environmental Sciences; 2017, 26, 3[77]
    1732-9353
    Pojawia się w:
    Scientific Review Engineering and Environmental Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Vehicle wheels vibration suppression by dynamic vibration absorber
    Zmniejszenie wibracji kół pojazdu przez dynamiczny absorber wibracji
    Autorzy:
    Stotsko, Z.
    Diveyev, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/375114.pdf
    Data publikacji:
    2007
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    absorber wibracji
    absorber dynamiczny
    wibracja koła
    DVA
    vibration absorber
    dynamic absorber
    wheel vibration
    Opis:
    The article deals with the methods of calculation and optimization of dynamic processes in vibroexcitated constructions with dynamic absorbers. The improved constructions of such absorbers for vehicle wheels vibration suppression are discussed.
    Artykuł zajmuje się metodami obliczeń i optymalizacji procesów dynamicznych w konstrukcjach wibrujących z dynamicznymi absorberami. Została omówiona poprawiona konstrukcja takiego DVA dla zmniejszenia wibracji kół pojazdu.
    Źródło:
    Transport Problems; 2007, 2, 2; 83-90
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Dynamic vibration absorbers – optimization and design
    Autorzy:
    Pelekh, Ya.
    Diveyev, B.
    Hlobchak, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/410921.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    rotating machines
    discreet-continuum theory
    modal analysis
    dynamic vibration absorber
    optimal design
    electrical plants
    gas- and oil pipelines
    aerospace technique
    chisel installation
    cars
    magneto-optical disks
    home appliances
    maszyny wirujące
    teoria układów dyskretno-ciągłych
    analiza modalna
    absorber wibracyjno-dynamiczny
    optymalne kształtowanie
    elektrociepłownie
    rurociągi naftowo-gazowe
    technika lotnicza
    samochody
    dyski magnetyczno-optyczne
    sprzęt AGD
    Opis:
    The main aim of the paper is improved dynamic vibration absorbers (DVA) design, taking into account the complex rotating machines dynamics. It is often impossible to balance the rotating elements so as to reduce the vibration to an acceptable level. The paper considers the provision of DVA or number of such DVA. Such originally designed DVA reduces vibration selectively in the maximum mode of vibration without introducing vibration in other modes. The result is achieved at a far lower expense than would be required to replace the concrete and steel foundation with a more massive one. By installing DVA, one can minimize excitation virtually at the source. In order to be more effective, a vibration absorption system should react in all the frequency domains. The present absorber also has as an advantage that it can be constructed so that it has a wide-range vibration absorption property. This construction allows for an easy connection of the above rotor equipment. In order to determine the optimal parameters of DVA, the complete modeling of the rotating machine dynamics is obvious. The two degrees of freedom model are totally inadequate to accurately calculate the vibration frequencies of the construction and therefore, for a sufficiently accurate determination of its dimensional characteristics so as to determine such frequencies. It is therefore necessary in practice to dimension the construction through more complex modeling. In particular, concentrated mass and rigidity calculation methods may be adopted based on an even more accurate theoretical determination. The numerical schemes (NS) row is considered for the complex vibration-excited constructions. Methods of decomposition and the NS synthesis are considered on the basis of new methods of modal synthesis. Complex NS are obtained of discretely-continua type, which enables in the adaptive mode to calculate tension not only in the continuum elements, but in the places of the most tension concentration in joints. Traditional design methodology, based on discontinuous models of structures and machines is not effective for high frequency vibration. The present research develops a modern prediction and control methodology, based on complex continuum theory and application of special frequency characteristics of structures. Complex continuum theory allows to take into consideration system anisotropy, supporting structure strain effect on equipment motions and to determine some new effects that are not described by ordinary mechanics of the continuum theory. The absorbers in accordance with this paper may be applied not only to electric machines ore aeronautic structures, but also to any other type of vibration-excited structure, such as cars, chisel installation, optical, magneto-optical disks, washing machines, refrigerators, vacuum cleaners, etc.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2017, 6, 1; 23-30
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-14 z 14

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