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Wyświetlanie 1-6 z 6
Tytuł:
Elastic buckling of a generalized cylindrical sandwich panel under axial compression
Autorzy:
Magnucki, Krzysztof
Magnucka, Ewa
Wittenbeck, Leszek
Powiązania:
https://bibliotekanauki.pl/articles/2204534.pdf
Data publikacji:
2023
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
cylindrical sandwich panel
rectangular sandwich plate
elastic buckling
panel warstwowy cylindryczny
płyta warstwowa prostokątna
płyta typu sandwich prostokątna
wyboczenie elastyczne
Opis:
The paper is devoted to buckling problem of an axially compressed generalized cylindrical sandwich panel and rectangular sandwich plate. The continuous variation of mechanical properties in thickness direction of the structures is assumed. The generalized theory of deformation of the straight line normal to the neutral surface is applied. The analytical model of this sandwich panel is elaborated. Three differential equations of equilibrium of this panel based on the principle of stationary potential energy are obtained. This system of equations is analytically solved and the critical load is derived. Moreover, the limit transformation of the sandwich panel to a sandwich rectangular plate is presented. The critical loads of the example cylindrical panels and rectangular plates are derived.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2023, 71, 2; art. no. e144623
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibrational analysis of damped orthotropic rectangular plates with simple support on elastic Winkler foundation subjected to moving loads
Autorzy:
Idowu, A. S.
Are, E. B.
Gbadeyan, J. A.
Powiązania:
https://bibliotekanauki.pl/articles/264530.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
Winkler foundation
orthotropic rectangular plates
viscous damping
dynamic moving loads
płyta prostokątna
lepkość
obciążenie ruchome
Opis:
The model of a damped orthotropic rectangular plate resting on a Winkler foundation with a simple support has the fourth order differential equation governing it, which is reduced to a second order coupled differential equation by separating the variables. The coupled differential equation was solved using numerical schemes .The classical condition used as an illustrative example is the simple support condition. It is observed that damping plays a very significant role in the vibration of solid structures, as it has been shown that the deflection profile depends greatly on the damping ratio. The deflection profile also proves to be more stable in the presence of foundation coupled with viscous damping. The results obtained were discussed and graphically presented.
Źródło:
International Journal of Applied Mechanics and Engineering; 2017, 22, 4; 1075-1082
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Buckling and post-buckling behaviour of shallow – nearly flat cylindrical panels under axial compression
Autorzy:
Magnucka-Blandzi, E.
Magnucki, K.
Powiązania:
https://bibliotekanauki.pl/articles/201207.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
rectangular plate
cylindrical shell
elastic buckling
equilibrium paths
płyta prostokątna
powłoka cylindryczna
wyboczenie sprężyste
ścieżki równowagi
Opis:
The paper is devoted to buckling problem of axially compressed shallow cylindrical panels. Governing differential equations of the nonlinear theory of shallow cylindrical shells are analytically solved. Critical stresses and equilibrium paths of the panels with small curvatures are analytically studied. The formula of the critical stresses for almost flat, cylindrical panels is derived. The “shallowness” of the panel is given by the parameter α and formulae are derived for a range of this parameter. The range of values of sectorial angle for these panels is also defined.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 3; 655-658
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modele materiałów porowatych w projektowaniu konstrukcyjnych elementów powierzchniowych
Porous material models in designing of the constructional surface elements
Autorzy:
Mielniczuk, Janusz
Malinowski, Marek
Powiązania:
https://bibliotekanauki.pl/articles/34656088.pdf
Data publikacji:
2005
Wydawca:
Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
Tematy:
materiały porowate
materiały konstrukcyjne
prostokątna płyta
powłoka walcowa
Opis:
W artykule przedstawiono podstawy modelowania materiałów konstrukcyjnych oraz omówiono podstawowe właściwości strukturalne i mechaniczne materiałów porowatych. Dla założonego modelu sprężystego materiału porowatego określone zostały wytrzymałość i stateczność elementów powierzchniowych – prostokątnej płyty i powłoki walcowej. Artykuł powstał w wyniku realizacji tematu badawczego nr 5T07C02825 KBN pt. „Metody oraz projektowanie cech konstrukcyjnych elementów powierzchniowych o strukturze porowatej”.
The article presents the basics of modeling construction materials and discusses the basic structural and mechanical properties of porous materials. For the assumed model of an elastic porous material, the strength and stability of surface elements - a rectangular plate and a cylindrical shell - were determined. The article was created as a result of the research topic no. 5T07C02825 of the KBN entitled "Methods and design of structural features of surface elements with a porous structure."
Źródło:
Rail Vehicles/Pojazdy Szynowe; 2005, 3; 15-21
0138-0370
2719-9630
Pojawia się w:
Rail Vehicles/Pojazdy Szynowe
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The effect of added point masses on the geometrically non-linear vibrations of SCSC rectangular plates
Autorzy:
Hamdani, Mustapha
El Kadiri, Mounia
Benamar, Rhali
Powiązania:
https://bibliotekanauki.pl/articles/2096183.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
SCSC rectangular plates
added mass
nonlinear free vibration
nonlinear forced vibration
swobodne drgania nieliniowe
płyta prostokątna
nieliniowe drgania wymuszone
Opis:
A point mass added to a plate may have a significant effect on its linear and nonlinear dynamics, including frequencies, mode shapes and the forced response to external loading. In the present paper, a simply supported clamped simply supported clamped rectangular plate (SCSCRP) carrying a point mass is examined. The expressions for the kinetic, linear and non-linear strain energies are derived by taking into account the effect of the added mass on the kinetic energy and the effect of the membrane forces induced by the non-linearity on the strain energy. The discretization of these expressions makes the mass tensor, the linear and non-linear rigidity tensors appear in a non-linear algebraic multimode amplitude equation, the iterative solution of which permit to obtain, in the neighborhood of the first non-linear mode, the basic SCSCRP function amplitude dependent contribution coefficients. Nonlinear frequency response functions have been obtained for the first time, based on an iterative numerical solution in each case of the associated complete set of nonlinear algebraic equations. Such new results are useful for a better qualitative understanding allowing an optimal dynamic design of the rectangular plates with added masses.
Źródło:
Diagnostyka; 2022, 23, 2; art. no. 2022206
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Numerical study of the heat transfer phenomenon of a rectangular plate including void, notch using finite difference technique
Autorzy:
Deb Nath, S. K.
Peyada, N. K.
Powiązania:
https://bibliotekanauki.pl/articles/265803.pdf
Data publikacji:
2015
Wydawca:
Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:
transient
steady state
finite difference method
analytical method
rectangular plate
void
notch
metoda różnic skończonych
metoda analityczna
płyta prostokątna
Opis:
In the present study, we have developed a code using Matlab software for solving a rectangular aluminum plate having void, notch, at different boundary conditions discretizing a two dimensional (2D) heat conduction equation by the finite difference technique. We have solved a 2D mixed boundary heat conduction problem analytically using Fourier integrals (Deb Nath et al., 2006; 2007; 2007; Deb Nath and Ahmed, 2008; Deb Nath, 2008; Deb Nath and Afsar, 2009; Deb Nath and Ahmed, 2009; 2009; Deb Nath et al., 2010; Deb Nath, 2013) and the same problem is also solved using the present code developed by the finite difference technique (Ahmed et al., 2005; Deb Nath, 2002; Deb Nath et al., 2008; Ahmed and Deb Nath, 2009; Deb Nath et al., 2011; Mohiuddin et al., 2012). To verify the soundness of the present heat conduction code results using the finite difference method, the distribution of temperature at some sections of a 2D heated plate obtained by the analytical method is compared with those of the plate obtained by the present finite difference method. Interpolation technique is used as an example when the boundary of the plate does not pass through the discretized grid points of the plate. Sometimes hot and cold fluids are passed through rectangular channels in industries and many types of technical equipment. The distribution of temperature of plates including notches, slots with different temperature boundary conditions are studied. Transient heat transfer in several pure metallic plates is also studied to find out the required time to reach equilibrium temperature. So, this study will help find design parameters of such structures.
Źródło:
International Journal of Applied Mechanics and Engineering; 2015, 20, 4; 733-756
1734-4492
2353-9003
Pojawia się w:
International Journal of Applied Mechanics and Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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