Affiliation:
1. College of Science, Hunan Agricultural University, Changsha 410128, People’s Republic of China
Abstract
In this paper, molecular dynamics simulation is conducted to study the relationship between the surface and dislocation of nanoporous copper under cyclic shear loading. The results show that the dislocation and the surface have both mutual promotion and competition relationship. On one hand, the surface becomes rough owing to reconstruction caused by cyclic shear, which promotes the dislocation activities, while the dislocation activities also accelerate the process of surface reconstruction. On the other hand, there is a competition between surface reconstruction and dislocation activities: in the early cycles, the dislocation density is low, and surface reconstruction dominates stress release; in the late cycles, the surface tends to be stable, and then, the dislocation activities dominate.
Funder
NSF of China
NSF of Hunan Province
Funding of the Hunan Education Department Project
Double First-Class Construction Project of Hunan Agricultural University
Subject
General Physics and Astronomy
Cited by
1 articles.
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