섬유방향 예측이론을 적용한 탄소나노튜브 보강 알루미늄 복합재의 분자동역학 해석

다국어 초록 (Multilingual Abstract)

This research presents Molecular Dynamics (MD) simulations to characterize the tensile behaviors of aluminum (Al) composites reinforced with carbon nanotubes (CNTs) considering the relative positions and alignments of CNTs. The positions, alignments and condensations of CNT inside aluminum composites are usually stochastic in real and obviously, they influence the tensile behaviors of the composites. Therefore, it is important to quantize the strengths of the CNT-Al composites depending on the configurations of CNTs. To find out the effects of the configurations of CNTs, a computational approach based on MD simulations is used to analyze the mechanical behavior of the CNT-Al composite material under tensile tests. The angle of the CNTs is varied inside an aluminum composite to estimate the Yield strengths of the composites applying MD simulations. Compared with the strength of pure Al composite, the Young’s modulus of an aluminum composite increases about 20 GPa from 71.52 GPa to 92 GPa (Chiral vector (6,6), 0 degrees). However, when inclined carbon nanotubes are inserted to make a composite, the strength is deteriorated due to the interface slip and the necking of Al block. It is also observed that both yield stress and yield strain are deteriorated. This deterioration is mostly due to premature failure of the CNT–Al composite due to CNT local buckling.

목차 (Table of Contents)

• Abstract
• 1. 서론
• 2. 방법론
• 3. 결과
• 4. 결론
• 참고문헌