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Simulating the damped vibrations of a fractional oscillator with fuzzy initial conditions. 

Awrejcewicz, Jan; Tomasiello, Stefania (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
A Picard-like scheme using quadrature and differential quadrature rules, formerly introduced to solve integro-differential equations, is herein adapted to solve the problem of an oscillator with damping defined by the ...
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Theoretical analysis of the foil bearings dynamic characteristics. 

Tkacz, Eliza; Kozanecki, Zbigniew; Kozanecka, Dorota; Łagodziński, Jakub (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
In the theoretical analysis, three systems were identified: a rotor, a gas film and a exible structure. The mathematical analysis involves formulation of analytical equations for each of these elements and determination ...
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Mechanical systems with two nonlinear springs connected in series. 

Starosta, Roman; Sypniewska-Kamińska, Grażyna; Awrejcewicz, Jan (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
The aim of the paper is analysis of dynamical regular response of the nonlinear oscillator with two serially connected springs of cubic type nonlinearity. Behaviour of such systems is described by a set of differential-algebraic ...
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Axially excited spatial double pendulum nonlinear dynamics. 

Ludwicki, Michał; Kudra, Grzegorz; Awrejcewicz, Jan (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
Analysis of a 3D spatial double physical pendulum system, coupled by two universal joints is performed. External excitation of the mechanism is realized by axial periodic rotations of the first joint of the pendulum. ...
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On the vibrations of a composite structure with hexagonal structure of a circular inclusions. 

Andrianov, Igor V.; Awrejcewicz, Jan; Markert, Bernd; Starushenko, Galina A. (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
One of the major advantages of homogenization is a possibility of the generalization of the obtained results. Namely, if a solution to the local problem is found, then without principal problems one may solve not only the ...
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Experimental and numerical investigations of a pendulum driven by a low-powered DC motor. 

Wasilewski, Grzegorz; Kudra, Grzegorz; Awrejcewicz, Jan; Kaźmierczak, Maciej; Tyborowski, Mateusz; Kaźmierczak, Marek (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
The work is a continuation of numerical and experimental investigations of a system consisting of a single pendulum with the joint horizontally driven by the use of a crank-slider mechanism and DC motor. The power supplied ...
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Influence of intermediate foil on air-foil bearings performance and exploitation properties. 

Łagodziński, Jakub; Miazga, Kacper (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
Air-foil technology is an interesting alternative for classic rolling or oil bearings in turbomachinery. It ensures low power losses, do not require external lubrication or pressurization and is capable of working with ...
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Strain analysis and structural optimization of functionally graded rod with small concentration of inclusions. 

Andrianov, Igor V.; Diskovsky, Alexander A.; Awrejcewicz, Jan (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
The homogenization procedure is applied to strain analysis and optimal design of a Functionally Graded (FG) rod in the case when the inclusion size is essentially less than a distance between them. The method is illustrated ...
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Influence of position of an anvil beam on vibrations of collecting electrodes. 

Nowak, Andrzej; Nowak, Paweł; Awrejcewicz, Jan (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
The paper presents experimentally verified computational model of the collecting electrodes in electrostatic precipitator (ESP). Discretisation of the whole system, both the beams and the electrodes, is carried out by means ...
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Double pendulum colliding with a rough obstacle. 

Sypniewska-Kamińska, Grażyna; Starosta, Roman; Awrejcewicz, Jan (Politechnika Łódzka. Wydział Mechaniczny. Katedra Automatyki, Biomechaniki i Mechatroniki., 2015)
The externally excited and damped vibrations of the double pendulum in the vertical plane are considered. The pendulum can collide with a rough obstacle many times during its motion. The pendulum is modeled as a piecewise ...
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AuthorAwrejcewicz, Jan (20)Kudra, Grzegorz (5)Andrianov, Igor V. (3)Łagodziński, Jakub (3)Grzelczyk, Dariusz (2)Kozanecka, Dorota (2)Kozanecki, Zbigniew (2)Ludwicki, Michał (2)Markert, Bernd (2)Starosta, Roman (2)... View MoreSubject
dynamical systems - conference (24)
systems theory - conference (24)
mechatronics - conference (8)teoria systemów (7)systemy dynamiczne (6)symulacje numeryczne (3)tarcie (3)dynamika (2)mechatronika (2)wahadło (2)... View MoreDate Issued2015 (24)Has File(s)
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