Free vibration of nanotubes affected by atomic dislocation
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Date
2018
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Publisher
Avestia Publishing
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info:eu-repo/semantics/openAccess
Abstract
In recent years, the invention of nanotubes has begun to find its own use area. Computer related researches have been developed for the first time in the world a logical computer circuit in a single molecule. Carbon atoms formed, hair from a tube-shaped molecule of 100,000 times thinner than the hair, carbon nanotubes produced the "voltage Inverter", one of the three basic circuits found on today's computers. In addition, the new generation transistor design is used in electronics. In terms of mechanical properties, the elasticity modulus is in the order of TPa. By the using of nano strain gauge devices, the mechanical properties of the material measurements will be more accurate. In this paper, nanobeam is formulated as an Euler-Bernoulli beam and the equation of motion will be solved by using central finite differences method. By the invention of carbon nanotubes by Iijima [1], science has gained a new perspective. In the name of this perspective, nanomaterial is not so wrong. Nano scale materials have good electrical and mechanical properties. Thus, they can be applied for nanodevices and nanocomposites. After 1960s, Eringen concentrated its work on the mechanics of continuous materials and pioneered this branch of science. In this way, the effects of the borders between atoms are better understood [2-4].In 2009, Abbaschian and Reed-Hill examined the formation of dislocation between atoms, in detail [5].Wang and Varadan studied the behavior of free vibration in the swcnt Timoshenko beam using nonlocal elasticity in 2006 [6]. In this study, affected Single Walled Carbon Nanotubes (SWCNTs) will be studied using transverse vibration of CNTs in the framework of the Nonlocal Elasticity theory. Equations of motion of carbon nanotubes, numerical results are obtained for affected CNTs by using Euler Bernoulli beam theory. The effects of the first mode frequency parameter of SWCNT has affected (missing) mass are studied by using Central Finite Differences Method. The location of missing mass and nonlocal parameters on vibration of SWCNT is investigated.Simply Supported boundary condition is considered. The purpose of this study is to fill this gap by investigating vibration problems of carbon nanotubes have missing mass. © 2018, Avestia Publishing.
Description
4th World Congress on New Technologies, NEWTECH 2018 -- 19 August 2018 through 21 August 2018 -- Madrid -- 140278
Keywords
Carbon nanotubes, Euler bernoulli beam, Finite differences method, Vibration
Journal or Series
Proceedings of the World Congress on New Technologies
