MODELING OF INTERACTION NANOPARTICLES WITH CRACKS ON THE SURFACE OF SOLIDSстатьяИсследовательская статья
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Дата последнего поиска статьи во внешних источниках: 20 января 2021 г.
Аннотация:The paper presents in-depth analysis and modeling of processes of interaction of nanoparticles with micro cracks on a solid surface. The molecular dynamics method was used to simulate the processes of interaction of nanoparticles with a crack. The numerical simulation of the processes of dynamic interaction of nanoparticles and penetration of nanoparticles into the crack is performed. The results of numerical calculations and analyzes of the interaction of aluminum and copper nanoparticles with micro cracks in the aluminum and other materials are presented. It has been shown that nanoparticles form “bridge” structures connecting and fixing the surface of a crack. The formation of a “bridge” of nanoparticles leads to both complete overgrowth of the microcrack and its transformation into micropores, due to the restructuring of the structure of the nanosystem. A comparison is made of crack opening under load with and without nanoparticles. It has been established that cracks with nanoparticles inside require a large load for opening. In general, the presence of nanoparticles in a microcrack stabilizes and strengthens it.