Temat: rectangular - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Pre-designing of a mechatronic system using an analytical approach with Dymola
Autorzy:: Hamza, G.
Choley, J.-Y.
Hammadi, M.
Riviere, A.
Barkallah, M.
Louati, J.
Haddar, M.
Powiązania:: https://bibliotekanauki.pl/articles/281893.pdf
Data publikacji:: 2015
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: pre-dimensioning
Dymola
analytical method
vibration
rectangular plate
Opis:: This paper presents a pre-dimensioning method applied to a mechatronic system and regarding the vibrational aspect, through a simple modeling process in Dymola environment. We study the vibration transmission between dynamic exciters (motors) and receivers (electronic cards) which are located on a simply supported rectangular plate, using an analytical approach. This new method will allow us to perform representative and robust modeling and simulation. The solution for this issue would be a pre-sizing and pre-positioning procedure. It aims to determine a set of possible technical solutions and principal characteristics before the definitive choice of components and precise sizing of the system. The presented method predicts also behaviour of the mechatronic system. In order to validate the model with respect to the finite element method, selected simulation results are presented.
Źródło:: Journal of Theoretical and Applied Mechanics; 2015, 53, 3; 697-710
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Exponential temperature effect on frequencies of a rectangular plate of non-linear varying thickness: a quintic spline technique
Autorzy:: Gupta, A. K.
Mamta, J.
Powiązania:: https://bibliotekanauki.pl/articles/949230.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: exponentially temperature
non-linear
thickness variation
vibration
rectangular plate
Opis:: The differential equation governing the transverse motion of an elastic rectangular plate of non-linear thickness variation with thermal gradient has been analyzed on the basis of classi- cal plate theory. Following Levy’s approach, i.e. the two parallel edges are simply supported, the fourth-order differential equation governing the motion of such plates of non-linear vary- ing thickness in one direction with exponentially temperature distribution has been solved by using the quintic splines interpolation technique for two different combinations of clamped and simply supported boundary conditions at the other two edges. An algorithm for com- puting the solution of this differential equation is presented for the case of equal intervals. The effect of thermal gradient together with taper constants on the natural frequencies of vibration is illustrated for the first three modes of vibration.
Źródło:: Journal of Theoretical and Applied Mechanics; 2014, 52, 1; 15-24
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Vibration frequencies of a rectangular plate with linear variation in thickness and circular variation in Poisson’s ratio
Autorzy:: Sharma, Amit
Powiązania:: https://bibliotekanauki.pl/articles/280855.pdf
Data publikacji:: 2019
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: rectangular plate
circular variation
linear variation
Poisson’s ratio
Opis:: The frequency for the first two modes of vibration of a nonhomogeneous tapered rectangular plate is calculated under a bi linear (i.e., linear along both the axes) temperature field. For consideration of the nonhomogeneous material, the author assumed circular variation in Poisson’s ratio. Tapering in the plate is assumed to be linear in one direction. The results are calculated for different values of plate parameters and presented with the help of graphs. Comparison of the results is also given, to support the results of the present study.
Źródło:: Journal of Theoretical and Applied Mechanics; 2019, 57, 3; 605-615
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Modelling method of dynamic characteristics of marine thin-walled structure
Autorzy:: Doan, Do Van
Szeleziński, Adam
Murawski, Lech
Muc, Adam
Powiązania:: https://bibliotekanauki.pl/articles/245078.pdf
Data publikacji:: 2019
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: thin-walled structure
vibration
FEM
rectangular plate
Patran-Nastran software
Opis:: Thin-walled structures are very popular in industries, especially in the field of shipbuilding. There are many types of equipment and structures of ships, which are made up of thin-walled structures such as hull, deck and superstructure. Therefore, the analysis and understanding of the static and dynamic characteristics of a thin-walled structure are very important. In this article, we focus on vibration analysis of a typical thin-walled structurerectangular plate, a basic structure of the hull. Vibration analysis of a rectangular thin plate is conducted by two methods: numerical modelling method of the finite element on Patran-Nastran software platform and experimental method implemented in the laboratory of Gdynia Maritime University. Thin rectangular plate is fixed one end by four clamping plates and is modelled with finite elements and different meshing densities. The numerical model of thin rectangular plate is divided into four cases. Case 1, thin rectangular plate, and clamping plates are modelled with two-dimensional elements. Case 2, the rectangular thin plate is modelled with two-dimensional elements; the clamping plates are modelled with three-dimensional elements. Case 3, both the rectangular thin plate and clamping plates are modelled with three-dimensional elements. Case 4, the rectangular thin plate, and clamping plates are modelled with three-dimensional elements with larger mesh density to increase the accuracy of the calculation results. After that, the results of vibration analysis according to the numerical modelling method on Patran-Nastran software platform for these cases were compared with the measurement results. From there, assess the accuracy of analysis results of selected numerical model methods and the ability to widely apply this numerical model method to other marine structures
Źródło:: Journal of KONES; 2019, 26, 4; 39-46
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 5.

Tytuł:: A modified Fourier-Ritz method for free vibration of rectangular plates with elastic constrains
Autorzy:: Wu, Tao
Chen, Zhao Bo
Qu, Jian Jun
Powiązania:: https://bibliotekanauki.pl/articles/2086961.pdf
Data publikacji:: 2022
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: modified Fourier-Ritz method
rectangular plate
free vibration
boundary conditions
Opis:: In this paper, a modified Fourier-Ritz method is used to study free vibration of a rectangular plate with a set of simply supported opposite sides and another set of arbitrary elastic constraints. The influence of different elastic constraint stiffness values on the modal response of the rectangular plate is also analyzed. In order to avoid that the displacement function of the rectangular plate calculated by the traditional method and its derivative may be discontinuous or non-derivable at the boundary, the displacement function is expressed in the form of the sum of standard cosine series and a periodic polynomial function. Compared with the sine series expansion, the convergence of the result is enhanced. Several sets of numerical examples with different boundary conditions are given in the article, the data shows that the results calculated by this method have good accuracy and fast convergence. In addition, this paper also analyzes the boundary conditions and discusses the influence of different spring stiffness values on the setting of boundary conditions. The results can be applied to the setting of general boundary conditions and the study of vibration control of rectangular plates.
Źródło:: Journal of Theoretical and Applied Mechanics; 2022, 60, 1; 77--89
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 6.

Tytuł:: Dynamic response analysis of a thin-walled rectangular plate subjected to thermoacoustic loadings
Autorzy:: Dang, Zhigao
Mao, Zhaoyong
Powiązania:: https://bibliotekanauki.pl/articles/240521.pdf
Data publikacji:: 2020
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: thermoacoustic loadings
buckling
dynamic response
modal snap-through
rectangular plate
Opis:: For thin-walled structures invariably exposed to thermal and noise environment, their dynamic response is an extreme concern in the design of the component of advanced hypersonic aircraft. To address the problem, three theoretical models are established with three typical graded thermal distributions considered. By introducing the thermal moment, membrane forces and acoustic loadings into the vibration equation of plate, the governing equation is derived and it is solved combined with boundary conditions of the plate, the modal function and velocity compatibility equations at the fluid-structure coupling surface. The accuracy of the theoretical predictions is checked against finite element results with good agreement achieved. The results show that not the physical parameters with variation of temperature but the thermal moments and membrane forces, cause the buckling phenomenon. It is noted that buckling phenomenon occurs not only in uniform temperature field but also in graded temperature distribution filed. The mechanism analysis about modal snap-through and losing phenomenon indicates that thermoacoustic loadings will affect the stiffness matrix and mass matrix of structure. With the increase of temperature, the lower modes of the plate are lost, the higher modes appear in advance, and the losing phenomenon occurs in accordance with the order.
Źródło:: Archives of Thermodynamics; 2020, 41, 1; 151-174
1231-0956
2083-6023
Pojawia się w:: Archives of Thermodynamics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 7.

Tytuł:: Inelastic stability analysis of uniaxially compressed flat rectangular isotropic CCSS plate
Autorzy:: Ibearugbulem, O. M.
Eziefula, U. G.
Onwuka, D. O.
Powiązania:: https://bibliotekanauki.pl/articles/265658.pdf
Data publikacji:: 2015
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: deflection function
plastic buckling
rectangular plate
Taylor's series
work principle
płyta izotropowa
wyboczenia
metoda Taylora
Opis:: This study investigates the inelastic stability of a thin flat rectangular isotropic plate subjected to uniform uniaxial compressive loads using Taylor-Maclaurin series formulated deflection function. The plate has clamped and simply supported edges in both characteristic directions (CCSS boundary conditions). The governing equation is derived using a deformation plasticity theory and a work principle. Values of the plate buckling coefficient are calculated for aspect ratios from 0.1 to 2.0 at intervals of 0.1. The results compared favourably with the elastic stability values and the percentage differences ranged from -0.353% to -7.427%. Therefore, the theoretical approach proposed in this study is recommended for the inelastic stability analysis of thin flat rectangular isotropic plates under uniform in-plane compression.
Źródło:: International Journal of Applied Mechanics and Engineering; 2015, 20, 3; 637-645
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 8.

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

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Skocz do pozycji: 9.

Tytuł:: Reduced differential transform method for thermoelastic problem in hyperbolic heat conduction domain
Autorzy:: Chaudhari, K. K.
Sutar, C. S.
Powiązania:: https://bibliotekanauki.pl/articles/1839891.pdf
Data publikacji:: 2021
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: przewodzenie ciepła
przemieszczenie termiczne
naprężenie termiczne
hyperbolic heat conduction
thermal stresses
thermal displacement
rectangular plate
reduced differential transform
Opis:: In the present study, we have applied the reduced differential transform method to solve the thermoelastic problem which reduces the computational efforts. In the study, the temperature distribution in a two-dimensional rectangular plate follows the hyperbolic law of heat conduction. We have obtained the generalized solution for thermoelastic field and temperature field by considering non-homogeneous boundary conditions in the x and y direction. Using this method one can obtain a solution in series form. The special case is considered to show the effectiveness of the present method. And also, the results are shown numerically and graphically. The study shows that this method provides an analytical approximate solution in very easy steps and requires little computational work.
Źródło:: International Journal of Applied Mechanics and Engineering; 2021, 26, 1; 76-87
1734-4492
2353-9003
Pojawia się w:: International Journal of Applied Mechanics and Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 10.

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

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Skocz do pozycji: 11.

Tytuł:: Plyty prostokatne o skokowo zmiennej grubosci obciazone temperatura
Rectangle plates with leap variable thickness expanding temperature load
Autorzy:: Szymczak-Graczyk, A.
Powiązania:: https://bibliotekanauki.pl/articles/40670.pdf
Data publikacji:: 2007
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:: badania modelowe
praca statyczna
grubosc zmienna skokowo
analiza numeryczna
plyty prostokatne
metoda roznic skonczonych
obciazenie cieplne
konstrukcje inzynierskie
engineering construction
finite difference method
heat load
leap variable thickness
model research
numerical analysis
rectangular plate
static work
Źródło:: Acta Scientiarum Polonorum. Architectura; 2007, 06, 4; 33-43
1644-0633
Pojawia się w:: Acta Scientiarum Polonorum. Architectura
Dostawca treści:: Biblioteka Nauki

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