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Analysis of the Mechanical Properties of BNNTs in Compression

机译:压缩中BNNTs的力学性能分析

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For the purpose of studying the way of using boron nitride nanotubes (BNNTs) in nano-measurement technology,we use the method of Dreiding and Universal force fields to simulate the axial compression of two single wall boron nitride (BN) nanotubes: (12,0) zigzag BNNT and (12,12) armchair BNNT.Based on the simulation data,the mechanical properties of the compressed BNNTs have been collected and analyzed.Studies have shown that: 1) The Young's modulus and the compressive strength of (12,0) BN nanotube are both greater than the other one's; 2) Different curves of the strain energy accumulation are shown after deformation.In the event of topological deformation,energy of the former declines much faster than of the latter; 3) (12,12) BN nanotube has a secondary deformation when it's continuously compressed and the forms of the two buckling deformations are distinctly different.And all of these differences depend on their topological structures.
机译:为了研究在纳米测量技术中使用氮化硼纳米管(BNNT)的方式,我们使用Dreiding和通用力场方法来模拟两种单壁氮化硼(BN)纳米管的轴向压缩:(12, 0)之字形BNNT和(12,12)扶手椅BNNT。基于仿真数据,收集并分析了压缩的BNNTs的力学性能。研究表明:1)杨氏模量和(12, 0)BN纳米管都大于另一个; 2)变形后的应变能积累曲线不同。在发生拓扑变形时,前者的能量下降快于后者。 3)(12,12)BN纳米管在连续压缩时会发生二次变形,两种屈曲变形的形式明显不同,所有这些差异都取决于它们的拓扑结构。

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