| Summary: | 碩士 === 國立中正大學 === 機械工程所 === 95 === The mechanical properties of carbon nanotube aluminum matrix composites were studied using molecular dynamics simulations. The atomic models were constructed in order to investigate several effects, i.e. carbon nanotube weight ratio effect, chirality effect, continuous or discontinuous effect and dispersion effect .
It was found that the Young’s modulus of composites increase as carbon nanotube weight ratios increase. The Young’s modulus of chiral carbon nanotube composites were found to be higher than those with armchair and zig-zag carbon nanotubes for similar weight ratios. The continuous-nanotube composite showed an increase in stiffness relative to the aluminum matrix. The discontinuous-nanotube composite showed no enhancement relative to the aluminum matrix. The yield stress strength of continuous-nanotube composites were found to be higher than those with discontinuous-nanotube. The nanotube was concentrated or dispersed within the matrix, the Young’s modulus of nanocomposites was the same.
Keywords: molecular dynamics, nanocomposites, carbon nanotube, aluminum.
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