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1
Content available remote Loss factor prediction for laminated plates
100%
Diveyev B.
Journal of Achievements in Materials and Manufacturing Engineering
|
2007
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tom Vol. 25, nr 1
41-44
EN
Purpose: The study aims to predict the loss factor properties of composite laminated plates. Design/methodology/approach: Elastic constants of laminates and damping properties have been determined by using an identification procedure based on multi-level theoretical approach. Findings: The present paper is the first attempt at proposing a novel adaptive procedure to derive loss factor parameters for sandwich plate's vibration. Research limitations/implications: In the future the extension of the present approach to sandwich plates with different core materials will be performed in order to test various sandwich design. Practical implications: Structures composed of laminated materials are among the most important structures used in modern engineering and especially in the aerospace industry. Such lightweight and highly reinforced structures are also being increasingly used in civil, mechanical and transportation engineering applications. Originality/value: The main advantage of the present method is that it does not rely on strong assumptions on the model of the plate. The key feature is that the raw models can be applied at different vibration conditions of the plate by a suitable analytical or approximation method.
2
Content available remote Elastic modules identification by layered composite beams testing
63%
Diveyev B. , Konyk S.
Journal of Achievements in Materials and Manufacturing Engineering
|
2015
|
tom Vol. 72, nr 1
14--22
EN
Purpose: The study aims to predict elastic properties of composite laminated plates from the measured mechanical properties. Design/methodology/approach: Elastic constants of laminates and damping properties have been determined by using an identification procedure based on experiment design, and multi-level theoretical approach. Findings: The present paper is the first attempt at proposing a novel adaptive procedure to derive stiffness parameters from forced sandwich plate’s vibration experiments. Research limitations/implications: In the future the extension of the present approach to sandwich plates with different core materials will be performed in order to test various experimental conditions. Practical implications: Structures composed of laminated materials are among the most important structures used in modern engineering and especially in the aerospace industry. Such lightweight and highly reinforced structures are also being increasingly used in civil, mechanical and transportation engineering applications. Originality/value: The main advantage of the present method is that it does not rely on strong assumptions on the model of the plate. The key feature is that the raw models can be applied at different vibration conditions of the plate by a suitable analytical ore approximation method
3
Content available Vehicle wheels vibration suppression by dynamic vibration absorber
63%
Stotsko Z. , Diveyev B.
Transport Problems
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2007
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tom T. 2, z. 2
83-90
EN
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.
PL
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.
4
Content available remote Application of complex methods for optimum designing mobile vehicles
51%
Diveyev B. , Vikovych I. , Butyter I.
Vibrations in Physical Systems
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2008
|
tom Vol. 23
95--101
EN
The main task of this work is to analyze CAD-system for the bearing systems of mobile wheeled machines and develop new CAD-component. The algorithm and program packages for construction of variety of cars with mounted and trailing equipment should be analyzed and developed on the basis of modern numerical methods of dynamics of continual-discrete systems. The calculation procedure of machine dynamics, resting on the synthesis of block-variational, modal and adaptive schemes, should be applied. The optimal designs were obtained for the boom suspension of boom sprayer with increased stabilizing and vibroprotecting properties.
5
Application of variation-analytical methods for rotating machine dynamics with absorber
51%
Kernytskyy I. , Diveyev B. , Pankevych B. , Kernytskyy N.
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nr 4
6
Content available remote Design of girder booms for sprayers of increased durability and high quality of agent application
51%
Hashtchuk P. , Diveyev B. , Vayda I. , Vickovych I.
Vibrations in Physical Systems
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2000
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tom Vol. 19
134--135
7
Content available Dynamic vibration absorbers – optimization and design
51%
Pelekh Y. , Diveyev B. , Hlobchak M.
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
|
2017
|
tom Vol. 6, No 1
23--30
EN
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.
8
Content available Using of dynamic vibration absorbers for regulation of vibrating compactor vibration properties
51%
Kernytskyy I. , Diveyev B. , Vybranets J. , Kernytskyy N.
|
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nr 3
EN
A new mathematical model for complicated machine constructions dynamic properties calculation and optimization by DVA is proposed. The essence of the method is to introduce the few parameter models such that the differential equations for machines construction and there dynamic properties optimization can be effectively analyzed.
PL
W artykule zaproponowany został model matematyczny niezbędny dla rozliczania i optymalizacji dynamicznych amortyzatorów wibracyjnych maszyn skomplikowanych konstrukcyjnie. Za pomocą opracowanego modelu opartego na równaniach różniczkowych staje się możliwa efektywna analiza i optymalizacja różnych parametrów maszyn oraz ich właściwości dynamicznych.
9
Content available remote Design and optimization of the impact and particle vibration absorbers
51%
Diveyev B. , Kernytskyy I. , Dorosh I. , Ilnytskyy I.
Journal of Achievements in Materials and Manufacturing Engineering
|
2015
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tom Vol. 71, nr 2
77--86
EN
Purpose: The main aim of this paper is improved dynamic vibration impact and particle absorbers design with taking into account complex machines dynamic. Design/methodology/approach: The numerical schemes row is considered for the complex vibro-loaded constructions. Methods of decomposition and the numerical schemes synthesis on the basis of discrete-continuum modelling are considered. Findings: Development of mathematical models of complicated machines in view of their interaction with system of dynamic vibration absorbers. Dynamic vibration absorbers – complicated machines system design optimized on vibro- absorption properties. Research limitations/implications: The research must be done for non-linear machine dynamics. Practical implications: The absorbers designed in accordance with this paper can be applied not only to electric machines or aeronautic structures, but to any other type of vibro-loaded structure, such as turbo machines, pumps, cars suspensions, chisel installation, optical, magneto-optical disks, washing machine, refrigerator, vacuum cleaner, etc. Originality/value: The paper has novelty both in theoretical, and in practical aspect, In order that optimal parameters of DVA be determinate the complete modelling of dynamics of rotating machine should be made. Traditional design methodology, based on discontinuous models of structures and machines are not effective for high frequency vibration. The one-digit values are established not only for the dynamic vibration absorber parameters, but also for mechanical of base structure in connection points of the dynamic vibration absorbers.
10
Content available remote Vibro- and sound protection in road machines by means of vibration absorbing
51%
Stotsko Z. , Diveyev B. , Ljubas O.
Archive of Mechanical Engineering
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2008
|
tom Vol. LV, nr 3
255-263
EN
In most cases, road machines emit both acoustic and vibration energy into the fluids or structures surrounding the machinery. This is dangerous for the construction strength of the machinery, and is harmful for human health. There are general classes of tools used to assess and optimize acoustic performance of a vehicle: test based methods, and Computer-Aided Engineering based methods. The second one is discussed in this paper.
PL
Większość maszyn drogowych emituje energię akustyczną i energię wibracji do otaczającego środowiska - płynów lub struktur stałych. Jest to niebezpieczne dla wytrzymałości konstrukcji i szkodliwe dla zdrowia ludzkiego. Istnieją generalnie dwie klasy narzędzi stosowanych do oceny i optymalizacji właściwości akustycznych pojazdu: metody oparte na testach, oraz metody projektowania wspomaganego komputerowo (Computer-Aided Engineering). Metoda należąca do tego drugiego rodzaju jest omawiana w przedstawionej pracy.
11
Content available remote Diskrete-continuum methods application for rotating machine-absorber interaction analysis
51%
Stocko Z. , Diveyev B. , Topilnyckyj V.
Journal of Achievements in Materials and Manufacturing Engineering
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2007
|
tom Vol. 20, nr 1-2
387-390
EN
Purpose: The main aim of this paper is improved dynamic vibration absorbers design with taking into accout complex rotating machines dynamic. Design/methodology/approach: The numerical schemes row is considered for the complex vibroexitated constructions. Methods of decomposition and the numerical schemes synthesis are considered on the basis of new methods of modal synthesis. Findings: Development of mathematical models of complicated machines and buildings in view of their interaction with system of dynamic vibration absorbers. Dynamic vibration absorbers - complicated rotating machines system design optimized on vibro- absorption properties. Research limitations/implications: The research must be done for non-linear rotor dynamics. Practical implications: The absorbers designed in accordance with this paper can be applied not only to electric machines or aeronautic structures, but to any other type of vibro-exitated structure, such as cars, chisel installation, optical, magneto-optical disks, washing machine, refrigerator, vacuum cleaner, etc. Originality/value: The paper has novelty both in theoretical, and in practical aspect. In order that optimal parameters of DVA be determinate the complete modeling of dynamics of rotating machine should be made. Traditional design methodology, based on discontinuous models of structures and machines are not effective for high frequency vibration.
12
Content available remote Dynamic properties identification for laminated plates
51%
Diveyev B. , Stocko Z. , Topilnyckyj V.
Journal of Achievements in Materials and Manufacturing Engineering
|
2007
|
tom Vol. 20, nr 1-2
227-230
EN
Purpose: The study aims to identify elastic properties of laminated plates from the measured dynamical properties. Design/methodology/approach: Elastic constants of laminates have been determined by using an identification procedure based on experiment design, and multi-level theoretical approach. Findings: The present paper is the first attempt at proposing a novel procedure to derive stiffness parameters from forced sandwich plates. The main advantage of the present method is that it does not rely on strong assumptions on the model of the plate. The key feature is that the raw models can be applied at different vibration conditions of the plate by a suitable analytical ore approximation method. Research limitations/implications: In the future the extension of the present approach to sandwich plates will be performed in order to test various experimental conditions. Practical implications: Structures composed of laminated materials are among the most important structures used in modern engineering and especially in the aerospace industry. Such lightweight and highly reinforced structures are also being increasingly used in civil, mechanical and transportation engineering applications. Originality/value: The main advantage of the present method is that it does not rely on strong assumptions on the model of the plate. The key feature is that the raw models can be applied at different vibration conditions of the plate by a suitable analytical ore approximation method.
13
Content available remote Dynamic rigidity and loss factor prediction for composite layered panel
51%
Diveyev B. , Smolskyy A. , Sukhorolskyy M.
Archives of Materials Science and Engineering
|
2008
|
tom Vol. 31, nr 1
45-48
EN
Purpose: The study aims to predict the dynamic rigidity and loss factor properties of composite laminated plates. Design/methodology/approach: Dynamic rigidity and loss factor properties have been determined by using a numerical schemes based on multi-level theoretical approach. Findings: The present paper is the first attempt at proposing a novel adaptive procedure to derive dynamic rigidity and damping parameters for sandwich plate’s vibration. Research limitations/implications: In the future the extension of the present approach to sandwich plates with different core materials will be performed in order to test various sandwich design. Practical implications: Structures composed of laminated materials are among the most important structures used in modern engineering and especially in the aerospace industry. Such lightweight and highly reinforced ructures are also being increasingly used in civil, mechanical and transportation engineering applications. Originality/value: The main advantage of the present method is that it does not rely on strong assumptions on the model of the plate. The key feature is that the raw models can be applied at different vibration conditions of the plate by a suitable analytical or approximation method
14
Content available Sound transmission of sandwich beams with the dynamic vibration absorbers
45%
Diveyev B. , Kernytskyy I. , Kopytko M. , Konyk S. , Kogut V.
Przegląd Naukowy. Inżynieria i Kształtowanie Środowiska
|
2015
|
tom 24
|
nr 2[68]
15
High order theories for investigation of laminated structures with clamp condition
45%
Diveyev B. , Kernytskyy I. , Butyter I. , Vybranec J. , Kernytskyy N.
Electronic Journal of Polish Agricultural Universities. Series Civil Engineering
|
2009
|
tom 12
|
nr 2
16
Content available Sound transmission of sandwich beams with the dynamic vibration absorbers
45%
Diveyev B. , Kernytskyy I. , Kopytko M. , Konyk S. , Kogut V.
Przegląd Naukowy Inżynieria i Kształtowanie Środowiska
|
2015
|
tom Vol. 24, No. 2
120--132
EN
This study aims to predict the sound transmission properties of composite layered beams structures with the system of dynamic vibration absorbers (DVA’s). The effective stiffness constants of equivalent to lamina Timoshenko beam and their damping properties have been determined by using a procedure based on multi-level numerical schemes and eigen-frequencies comparison. The strategy of an anisotropic beam to the Timoshenko beam seem to be such: the raw of models can be applied at different vibration or static conditions of the plate by a suitable analytical ore approximation method, research of sensitiveness in relation to the parameters of fixing and material anisotropy, numerical experiments on identification of elastic modules, practical module identification by exploring different schemes of experimental setup and, finally, posterior analysis of identification quality. The combined method of identification was proposed on the basis of the simultaneous use of information on a homogeneous beam and beam with an internal layer, with identical mechanical properties to the homogeneous beam. Numerical evaluations obtained for the vibration of the equivalent Timoshenko beam have been used to determine the sound transmission properties of laminated composite beams with the system of DVA’s. The optimization of beams-DVA’s system sound absorption properties is performed in the low frequency range.
PL
W artykule zostały przebadane procesy pochłaniania hałasu w kompozytowych płytach warstwowych wyposażonych w dynamiczne absorbery drgań (DAD). Skuteczne współczynniki sztywności belki równoważnej do belki Tymoszenki i jej właściwości absorpcyjne zostały określone analitycznie przy użyciu wielopoziomowych systemów liczbowych i przez porównanie ich własnych częstotliwości drgań. Porównanie belek anizotropowych z belką Timoszenki przeprowadzono w następujący sposób: modele porównywały się dla różnych dynamicznych i statycznych właściwości płytek stosując metody analityczne i aproksymacyjne, badała się korelacja parametrów mocowania belki i anizotropii jej materiału, doświadczalnie ustalone zostały wartości modułów sprężystości, które uściślono w trakcie badań różnych schematów doświadczalnych instalacji, a następnie analizowano dokładność określania parametrów. Połączona metoda określania parametrów przewidywała analizę porównawczą jednorodnych i warstwowych płyt (płyty z wewnętrzną warstwą) o identycznych właściwościach mechanicznych. Wyniki liczbowe otrzymane w badaniu drgań równoważnej belki Timoszenki zostały wykorzystane do określenia parametrów kompozytów warstwowych płyt izolacji akustycznej wyposażonej w systemy DAD. Optymalizację właściwości izolacji akustycznej systemu płyta – DAD przeprowadzano w zakresie niskich częstotliwości drgań.
17
Content available Optimization of the impact multi-mass vibration absorbers
38%
Kernytskyy I. , Diveyev B. , Horbaj O. , Hlobchak M. , Kopytko M. , Zachek O.
Przegląd Naukowy. Inżynieria i Kształtowanie Środowiska
|
2017
|
tom 26
|
nr 3[77]
EN
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.
18
Content available Dynamic properties of scre--bolts connections of sowing machine
38%
Snitynskyy V. , Kernytskyy I. , Diveyev B. , Horbay O. , Burtak V. , Humenyuk R.
Przegląd Naukowy. Inżynieria i Kształtowanie Środowiska
|
2019
|
tom 28
|
nr 4[86]
19
Content available Optimization of the semi-active vibration absorbers
38%
Snitynskyy V. , Kernytskyy I. , Diveyev B. , Horbay O. , Fornalchyk Y. , Humenuyk R. , Sholudko Y.
Przegląd Naukowy. Inżynieria i Kształtowanie Środowiska
|
2021
|
tom 30
|
nr 2[92]
20
Content available Vibration absorber optimization for boom-sprayer
38%
Kernytskyy I. , Diveyev B. , Stukalets I. , Horbay O. , Berezovetskyi S. , Baranovych E.
Przegląd Naukowy Inżynieria i Kształtowanie Środowiska
|
2018
|
tom Vol. 28, No. 4
504--515
EN
The main task of this work is to analyze optimal design-system of the booms of boom-sprayers. The discrete-continue models of machines dynamics of such wheeled machines as boom-sprayer with elongated boom element with the attachment of dynamic vibration absorbers are offered. The algorithms for vibration decreasing of boom are received. The new vibroabsorbing elements are proposed. The paper contemplates the provision of dynamic vibration absorbers (DVA) of buffered impact masses and particle type. Such originally designed absorbers reduce vibration selectively in maximum vibration mode, without introducing vibration in other modes. The damping results from the exchange of momentum during impacts among the masses and masses and stops as the structure vibrates. A technique is developed to give the optimal DVA’s as single degree of freedom (SDOF) buffered system. The one-digit values are established not only for the dynamic vibration absorber parameters, but also for mechanical parameter of base structure – boom in connection points of the dynamic vibration absorbers. Finally, present research develops the genetic algorithms for optimal design searching by discrete-continuum DVA’s system – base system modeling.
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