scholarly journals Influence of Winkler-Pasternak Foundation on the Vibrational Behavior of Plates and Shells Reinforced by Agglomerated Carbon Nanotubes

2017 ◽  
Vol 7 (12) ◽  
pp. 1228 ◽  
Author(s):  
Damjan Banić ◽  
Michele Bacciocchi ◽  
Francesco Tornabene ◽  
Antonio Ferreira
2021 ◽  
Vol 163 ◽  
pp. 104058
Author(s):  
J. Payandehpeyman ◽  
K. Moradi ◽  
A. Shayesteh Zeraati ◽  
H. Goodarzi Hosseinabadi

2017 ◽  
Vol 64 (3) ◽  
pp. 359-373
Author(s):  
Korabathina Rajesh ◽  
Koppanati Meera Saheb

Abstract 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.


2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Iman Karami ◽  
S. Ali Eftekhari ◽  
Davood Toghraie

AbstractAmong various types of nanostructures, carbon nanotube (CNT) is one of the most important nanostructures. These nanostructures have been considered due to their mechanical, thermal, and vibrational properties. In this research, this nanostructure’s vibrational behavior in the vicinity of argon flow in the vicinity of ultrasonic velocity was investigated. The effect of factors such as the stability of atomic structures, the atomic manner of carbon nanotubes in the presence of ultrasonic fluid, the influence of carbon nanotubes’ length, and the chirality of carbon nanotubes on vibrational behavior was studied by molecular dynamics simulation. The MD simulations display an enhance in amplitude and a decrease in the oscillation frequency. Physically, these simulations’ results indicated the appropriate mechanical strength of carbon nanotubes in the presence of argon fluid. Numerically, the simulated carbon nanotubes’ minimum oscillation amplitude and frequency were equal to 2.02 nm and 10.14 ps−1. On the other hand, the maximum physical quantities were expressed as 4.03 nm and 13.01 ps−1.


2004 ◽  
Vol 120 (11) ◽  
pp. 5377-5386 ◽  
Author(s):  
Wai-Leung Yim ◽  
Oleg Byl ◽  
John T. Yates ◽  
J. Karl Johnson

Sign in / Sign up

Export Citation Format

Share Document