期刊
NANOTECHNOLOGY AND PRECISION ENGINEERING
卷 1, 期 4, 页码 242-247出版社
AIP Publishing
DOI: 10.1016/j.npe.2018.12.003
关键词
Multiscale; Cohesive zone model; Nanosized silicon carbide particles; Composite materials; Micromachining
资金
- National Science Foundation of China for Young Scientists [51505331]
A finite element method based on the cohesive zone model was used to study the micromachining process of nanosized silicon-carbide-partide (SiCp) reinforced aluminum matrix composites. As a hierarchical multiscale simulation method, the parameters for the cohesive zone model were obtained from the stress-displacement curves of the molecular dynamics simulation. The model considers the random properties of the silicon-carbide-partide distribution and the interface of bonding between the silicon carbide particles and the matrix. The machining mechanics was analyzed according to the chip morphology, stress distribution, cutting temperature, and cutting force. The simulation results revealed that the random distribution of nanosized SiCp causes non-uniform interaction between the tool and the reinforcement particles. This deformation mechanics leads to inhomogeneous stress distribution and irregular cutting force variation. Copyright (C) 2018 Tianjin University. Publishing Service by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.
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