本文選題：碳納米管　切入點：分子結(jié)構(gòu)力學　出處：《燕山大學》2015年碩士論文　論文類型：學位論文

【摘要】：在21世紀這個第三次工業(yè)革命所開創(chuàng)的新紀元中,納米科技和納米材料已經(jīng)成為了新材料技術(shù)的領(lǐng)航者。其中,異軍突起的碳納米管成為如今納米科技與納米材料中的佼佼者。碳納米管表現(xiàn)出了異同尋常材料的力學、電學、光學、熱學等性能,也正是因為這些個性鮮明的性質(zhì)使其具有其他材料無法匹敵的應用價值。為了研究碳納米管的基本力學性能,基于分子結(jié)構(gòu)力學方法,本文在ANSYS有限元軟件的平臺上實現(xiàn)其有限元算法及模擬。首先,介紹了分子結(jié)構(gòu)力學理論。然后,使用有限元軟件ANSYS二次開發(fā)技術(shù)開發(fā)了相應的程序模塊,其中,碳原子間的共價鍵用梁單元模擬。本文對單壁碳納米管進行有限元模型的建立;利用建立的模型對單壁碳納米管的彈性行為進行有限元分析,計算了單壁碳納米管的彈性模量,并分析了彈性模量與結(jié)構(gòu)參數(shù)(直徑和手性角)的關(guān)系;利用建立的模型對單壁碳納米管的振動特性進行有限元分析,計算了單壁碳納米管的固有頻率和振動模態(tài),并分析了固有頻率與結(jié)構(gòu)參數(shù)(長度和直徑)的關(guān)系,總結(jié)了單壁碳納米管的四種振動模態(tài)。
[Abstract]:In 21th century, the third industrial revolution ushered in a new era, nanotechnology and nanomaterials have become the leader of new material technology. Carbon nanotubes (CNTs) have become the best in nanotechnology and nanomaterials. Carbon nanotubes exhibit the mechanical, electrical, optical, thermal and other properties of unusual materials. It is precisely because of these distinctive properties that they are of unparalleled application value to other materials. In order to study the basic mechanical properties of carbon nanotubes, based on molecular structural mechanics, In this paper, the finite element algorithm and simulation are realized on the platform of ANSYS finite element software. Firstly, the theory of molecular structure mechanics is introduced. Then, the corresponding program module is developed by using the second development technology of finite element software ANSYS. In this paper, the finite element model of single-walled carbon nanotubes is established, the elastic behavior of single-walled carbon nanotubes is analyzed by finite element method, and the elastic modulus of single-walled carbon nanotubes is calculated. The relationship between elastic modulus and structural parameters (diameter and chiral angle) was analyzed, the vibration characteristics of single-walled carbon nanotubes were analyzed by finite element method, and the natural frequencies and vibration modes of single-walled carbon nanotubes were calculated. The relationship between natural frequency and structural parameters (length and diameter) is analyzed and four vibration modes of single-walled carbon nanotubes are summarized.
【學位授予單位】：燕山大學
【學位級別】：碩士
【學位授予年份】：2015
【分類號】：TB383.1;O613.71

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本文編號：1591356