Molecular dynamics simulations of single crystal copper nanocubes under triaxial tensile loading

Crystal copper nanocubes with different factors under triaxial tensions are studied by the molecular dynamics method. From stress-strain curve, yield stress and the damage models we can notice that decreasing the void size, increasing the strain rate and reducing the temperature can help to improve the strength of single crystal copper nanocube. Orientation is also a significant influence on the strength of the single crystal copper nanocube. A new porosity calculating method is presented based on the atomic number. Higher strain rates can harden the nanocubes. The dislocation atoms can easily slip under a high temperature. Nanomaterials are destroyed on account of coalescing voids.