Abstract
In this paper, the thermoelastic problem of low-dimensional nano copper rod under thermal shock is simulated using molecular dynamics method by adopting embedded atom method potential function. The rod oriented along x-axis, the left edge of the rod is traction free and the right edge is fixed, free boundary condition is imposed on y and z-axis. At the same time, the left and right ends of the rod are imposed hot and cold bath respectively. By virtue of the molecular dynamics method, the temperature, displacement and stress along the rod at different moment are got. The results show that the temperature, displacement and stress distribution in the mobile region are limited, indicating that the heat propagation speed is limited rather than infinite. In addition, the simulation process are conducted the Large-scale Atomic / Molecular Massively Parallel simulator (LAMMPS) and completed visualization software (Atomeye) in this paper.
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