Temat: rotating beam - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Vibration of a mistuned three-bladed rotor under regular and chaotic excitations
Autorzy:: Warminski, J.
Latalski, J.
Szmit, Z.
Powiązania:: https://bibliotekanauki.pl/articles/280551.pdf
Data publikacji:: 2018
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: rotating beam
multi-bladed rotor
rotor mistuning
chaotic oscillations
Opis:: This study considers forced vibrations of a rotating structure consisting of a rigid hub and three flexible beams. The blades are nominally made of a multilayered laminate with a specific stacking sequence resulting in full isotropic macroscopic material behaviour. However, in the performed analysis it is assumed that the rotor has been mistuned because of manufacturing tolerances of the composite material. These inaccuracies are represented by deviations of reinforcing fibres orientations from their nominal values. The considered tolerances break the intended macroscopic material isotropy and make the laminate to exhibit the fully orthotropic behaviour. Based on previous authors research, the system of four mutually coupled dimensionless ordinary differential governing equations is adopted. Forced responses of the system under regular and chaotic excitations are investigated.
Źródło:: Journal of Theoretical and Applied Mechanics; 2018, 56, 2; 549-566
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Controlling a non-homogeneous Timoshenko beam with the aid of the torque
Autorzy:: Sklyar, G. M.
Szkibiel, G.
Powiązania:: https://bibliotekanauki.pl/articles/330593.pdf
Data publikacji:: 2013
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: Timoshenko beam
rotating beam control
approximate control
stabilizability
belka Timoshenki
sterowanie wiązką
sterowanie aproksymacyjne
stabilizowalność
Opis:: Considered is the control and stabilizability of a slowly rotating non-homogeneous Timoshenko beam with the aid of a torque. It turns out that the beam is (approximately) controllable with the aid of the torque if and only if it is (approximately) controllable. However, the controllability problem appears to be a side-effect while studying the stabilizability. To build a stabilizing control one needs to go through the methods of correcting the operators with functionals so that they have finally the appropriate form and the results on C⁰-continuous semigroups may be applied.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2013, 23, 3; 587-598
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: A new dynamic model for a rotating beam carrying extra partially distributed mass
Autorzy:: Altınkaynak, A.
Gürgöze, M.
Powiązania:: https://bibliotekanauki.pl/articles/38605374.pdf
Data publikacji:: 2020
Wydawca:: Instytut Podstawowych Problemów Techniki PAN
Tematy:: mechanical vibrations
model analysis
rotating cantilever beam
partially distributed mass
radial basis functions-based meshless method
Opis:: In this paper, a new dynamic model for the vibration analysis of an inwardoriented rotating cantilever beam with extra distributed mass was presented. The derived differential equation of motion was solved using the meshless methods of generalizedMultiquadric Radial Basis Function (RBF) and the eigenfrequencies of the system were determined. The same problem was also modeled using the finite element method and the results were compared to validate the accuracy of the proposed model. Later, the effect of the partially distributed mass amount and location on the eigenfrequencies was studied for various beam lengths. The results showed that the eigenfrequency at a constant rotational speed mostly decreased unless the mass was located at the free end of the beam. The location of the mass had a greater effect on the first eigenfrequency compared to the second and third eigenfrequencies. A joint dimensionless eigenfrequency was found at a specific rotational speed regardless of the distributed mass. Nearly constant dimensionless eigenfrequencies could be obtained for a wide range of rotational speeds by adjusting the distributed mass.
Źródło:: Archives of Mechanics; 2020, 72, 4; 307-321
0373-2029
Pojawia się w:: Archives of Mechanics
Dostawca treści:: Biblioteka Nauki

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