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Wyszukujesz frazę "non-conservative system" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
Stationary Action Principle for Vehicle System with Damping
Autorzy:
Kosiński, W.
Oliferuk, W.
Powiązania:
https://bibliotekanauki.pl/articles/386816.pdf
Data publikacji:
2012
Wydawca:
Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
Tematy:
formalizm Lagrange'a
tłumienie
non-conservative system
principle of stationary action
Lagrangian formulation
non-commutative rule
damping
Opis:
The aim of this note is to show possible consequences of the principle of stationary action formulated for nonconservative sys tems. As an example, linear models of vibratory system with damping and with one and two degrees of freedom are considered. This kind of models are frequently used to describe road and rail vehicles. There are vibrations induced by road profile. The appropriate action functional is proposed with the Lagrangian density containing: the kinetic and potential energies as well as dissipative one. Possible variations of generalized coordinates are introduced together with a noncommutative rule between operations of taking variations of the coordinates and their time derivatives. The stationarity of the action functional leads to the EulerLagrange equations.
Źródło:
Acta Mechanica et Automatica; 2012, 6, 4; 23-26
1898-4088
2300-5319
Pojawia się w:
Acta Mechanica et Automatica
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Semi-analytical treatment of complex nonlinear oscillations arising in the slider-crank mechanism
Autorzy:
Big-Alabo, Akuro
Ogbodo, Collins Onyinyechukwu
Ossia, Chinwuba Victor
Powiązania:
https://bibliotekanauki.pl/articles/1031444.pdf
Data publikacji:
2020
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
Slider-crank mechanism
conservative system
continuous piecewise linearization method
non-natural system
nonlinear oscillation
periodic solution
Opis:
The model for the free nonlinear oscillation of the slider-crank mechanism is very complicated and difficult to solve accurately using most of the existing approximate analytical schemes. However, the continuous piecewise linearization method (CPLM), which is a recently proposed semi-analytical algorithm, is capable of producing simple and accurate periodic solutions for conservative systems irrespective of the complexity of the nonlinear restoring force. Hence, this study applied the CPLM to solve and analyze the complex nonlinear oscillations arising in the slider-crank mechanism. The CPLM results were verified using numerical solutions and it was found that the CPLM solution was accurate to less than 1.0% for angular amplitudes up to 165°. Analysis of the frequency-amplitude response revealed the existence of asymptotic behaviour as the ratio of the crank radius to the connecting rod length approaches zero or unity. Hence, oscillation models for the observed asymptotic responses were derived and found to be significantly simpler compared to the original oscillation model. Finally, analysis of the large-amplitude oscillations of the slider-crank mechanism revealed the presence of strong anharmonic response.
Źródło:
World Scientific News; 2020, 142; 1-24
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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