Molecular dynamic modeling of the loading of an ultrathin aluminum plate on a silicon substrate

In this paper, a set of atomistic models of an ultrathin membrane made of monocrystalline aluminum on a silicon base with an ideal crystal structure is constructed within the framework of the methodology of molecular dynamics, based on which molecular dynamic calculations have been performed in the LAMMPS package, which implements the method of molecular dynamics, of an ultrathin aluminum membrane on a silicon base under normal pressure for a series of interaction potentials for silicon. The fields of atomic Cauchy stresses in an aluminum plate are determined. The calculations allowed us to find the values of the critical load that this sample can withstand. Molecular dynamic calculations are implemented in the LAMMPS package, which implements the method of molecular dynamics, an ultrathin aluminum membrane on a silicon base under the influence of cyclic normal pressure for a series of interaction potentials for silicon. The fields of atomic Cauchy stresses in an aluminum plate are determined. The values of the critical load that a given sample can withstand are found, depending on the number of loading cycles. For cyclic loading of an ultrathin membrane, the following tests were performed: checking the symmetry of the cycle, analyzing hysteresis loops, monitoring damage accumulation, and monitoring the temperature regime. Molecular dynamic calculations were performed in the LAMMPS package, which implements the method of molecular dynamics, of an ultrathin aluminum membrane on a silicon base under the influence of normal pressure for two temperatures of 300K and 600K. The fields of atomic Cauchy stresses in an aluminum plate are determined. The values of the critical load that this sample can withstand are found.