Temat: jednolita belka - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Response characteristics of non-uniform beam with time-dependent boundary conditions and under the actions of travelling distributed masses
Autorzy:: Omolofe, B.
Adedowole, A.
Powiązania:: https://bibliotekanauki.pl/articles/122754.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Częstochowska. Wydawnictwo Politechniki Częstochowskiej
Tematy:: resonance
time dependent
foundation modulus
distributed masses
uniform beam
truble’s method
Galerkin equation
beam displacement
rezonans
równanie Galerkina
przemieszczenie belki
masy rozproszone
jednolita belka
Opis:: In this paper, dynamic response of non-prismatic elastic beam resting on elastic foundation and subjected to moving distributed masses is investigated. To obtain the solution of the fourth order partial differential equations with singular and variable coefficients governing the motion of the structural member, an elegant mathematical procedure involving the Mindlin and Goodman's technique, the generalized Galerkin method and the asymptotic Struble's technique with the series representation of the Heaviside function. Various results obtained from the analysis of the closed form solutions are presented in plotted curves and fully discussed.
Źródło:: Journal of Applied Mathematics and Computational Mechanics; 2017, 16, 2; 77-99
2299-9965
Pojawia się w:: Journal of Applied Mathematics and Computational Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Free Vibrations of Uniform Timoshenko Beams on Pasternak Foundation Using Coupled Displacement Field Method
Autorzy:: Rajesh, K.
Saheb, K. M.
Powiązania:: https://bibliotekanauki.pl/articles/140207.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: free vibrations
coupled displacement field method
uniform Timoshenko beam
Pasternak foundation
drgania swobodne
metoda CDF
jednolita belka Timoshenko
podłoże Pasternaka
Opis:: Complex structures used in various engineering applications are made up of simple structural members like beams, plates and shells. The fundamental frequency is absolutely essential in determining the response of these structural elements subjected to the dynamic loads. However, for short beams, one has to consider the effect of shear deformation and rotary inertia in order to evaluate their fundamental linear frequencies. In this paper, the authors developed a Coupled Displacement Field method where the number of undetermined coefficients 2n existing in the classical Rayleigh-Ritz method are reduced to n, which significantly simplifies the procedure to obtain the analytical solution. This is accomplished by using a coupling equation derived from the static equilibrium of the shear flexible structural element. In this paper, the free vibration behaviour in terms of slenderness ratio and foundation parameters have been derived for the most practically used shear flexible uniform Timoshenko Hinged-Hinged, Clamped-Clamped beams resting on Pasternak foundation. The findings obtained by the present Coupled Displacement Field Method are compared with the existing literature wherever possible and the agreement is good.
Źródło:: Archive of Mechanical Engineering; 2017, LXIV, 3; 359-373
0004-0738
Pojawia się w:: Archive of Mechanical Engineering
Dostawca treści:: Biblioteka Nauki

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