Temat: tapered beams - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Analysis of axially loaded tapered beams with general end restraints on two-parameter foundation
Autorzy:: Taha, M. H.
Nassar, M.
Powiązania:: https://bibliotekanauki.pl/articles/280518.pdf
Data publikacji:: 2014
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: tapered beams
elastic end restraints
two-parameter foundation
differential quadrature method
Opis:: The stability and free vibration of axially-loaded tapered beams with elastic end restraints resting on two-parameter foundations are studied using the differential quadrature method (DQM). The governing differential equation is discretized at sampling points, and then the boundary conditions due to elastic end restraints are implemented and substituted into the governing differential equation yielding a system of homogeneous algebraic equations. The equivalent two-parameter eigenvalue problem is obtained and solved for critical loads in the static case and for natural frequencies in the dynamic case. The obtained solutions are found compatible with those obtained from other techniques. The influences of different parameters on the critical loads and natural frequencies are investigated.
Źródło:: Journal of Theoretical and Applied Mechanics; 2014, 52, 1; 215-225
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Vibration Analysis of a Carbon Nanotube Reinforced Uniform and Tapered Composite Beams
Autorzy:: Babu Arumugam, Ananda
Rajamohan, Vasudevan
Bandaru, Naresh
Sudhagar P., Edwin
Kumbhar, Surajkumar G.
Powiązania:: https://bibliotekanauki.pl/articles/177161.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czasopisma i Monografie PAN
Tematy:: carbon nanotubes
uniform composite beams
tapered composite beams
finite element formulation
natural frequency
Opis:: In this study, free and forced vibration responses of carbon nanotube reinforced uniform and tapered composite beams are investigated. The governing differential equations of motion of a carbon nanotube (CNT) reinforced uniform and tapered composite beams are presented in finite element formulation. The validity of the developed formulation is demonstrated by comparing the natural frequencies evaluated using present FEM with those of available in literature. Various parametric studies are also performed to investigate the effect of aspect ratio, percentage of CNT content, ply orientation, and boundary conditions on natural frequencies and mode shapes of a CNT reinforced composite beam. It was observed that the addition of carbon nanotube in fiber reinforced polymer composite (FRP) beam enhances the stiffness of the structure which consequently increases the natural frequencies and alters the mode shapes.
Źródło:: Archives of Acoustics; 2019, 44, 2; 309-320
0137-5075
Pojawia się w:: Archives of Acoustics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Large amplitude free vibration analysis of tapered Timoshenko beams using coupled displacement field method
Autorzy:: Rajesh, K.
Saheb, K. M.
Powiązania:: https://bibliotekanauki.pl/articles/265957.pdf
Data publikacji:: 2018
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: wibracje
belka Timoshenki
parametry stożka
współczynnik smukłości
large amplitude vibrations
coupled displacement field method
tapered Timoshenko beams
taper ratio
slenderness ratio
frequency ratio
Opis:: Tapered beams are more efficient compared to uniform beams as they provide a better distribution of mass and strength and also meet special functional requirements in many engineering applications. In this paper, the linear and non-linear fundamental frequency parameter values of the tapered Timoshenko beams are evaluated by using the coupled displacement field (CDF) method and closed form expressions are derived in terms of frequency ratio as a function of slenderness ratio, taper ratio and maximum amplitude ratio for hinged-hinged and clamped-clamped beam boundary conditions. The effectiveness of the CDF method is brought out through the solution of the large amplitude free vibrations, in terms of fundamental frequency of tapered Timoshenko beams with axially immovable ends. The results obtained by the present CDF method are validated with the existing literature wherever possible.
Źródło:: International Journal of Applied Mechanics and Engineering; 2018, 23, 3; 673-688
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: 4.

Tytuł:: Large amplitude free vibration analysis of tapered timoshenko hinged-hinged beam using coupled displacement field method
Autorzy:: Korabathina, R.
Koppanati, M. S.
Powiązania:: https://bibliotekanauki.pl/articles/127704.pdf
Data publikacji:: 2017
Wydawca:: Politechnika Poznańska. Instytut Mechaniki Stosowanej
Tematy:: large amplitude free vibrations
coupled displacement field method
tapered Timoshenko beams
slenderness ratio
taper ratio
drgania swobodne
metoda CDF
belka Timoshenki
belka stożkowa
współczynnik smukłości
współczynnik stożkowatości
Opis:: Tapered beams are more efficient compared to uniform beams as they provide a better distribution of mass and strength and also meet special functional requirements in many engineering applications like architecture, aeronautical, civil, mechanical, automobile, nuclear and robotics. The authors proposed a new method called Coupled Displacement Field (CDF) method in which the displacement field such as total rotation is assumed such that the assumed displacement must satisfy the kinematic and force boundary condition of the beam. The lateral transverse displacement is derived from the coupling equation which is derived from the static equilibrium conditions of the beam. By the application of principle of minimum total potential energy for different beam boundary conditions, the fundamental frequency parameter value is calculated in terms of taper ratio and slenderness ratio for various maximum amplitude ratios of the tapered Timoshenko shear flexible hinged-hinged beam boundary condition.
Źródło:: Vibrations in Physical Systems; 2017, 28; 1-11
0860-6897
Pojawia się w:: Vibrations in Physical Systems
Dostawca treści:: Biblioteka Nauki

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