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Predicting ductility of Mg/SiCp nanocomposite under multiaxial loading conditions based on unit cell modeling

Journal Article · · International Journal of Mechanical Sciences
 [1];  [2];  [3];  [3];  [2];  [2]
  1. Southwest Jiaotong Univ., Sichuan (China); Univ. of Central Florida, Orlando, FL (United States); Univ. of Central Florida, Orlando, FL (United States)
  2. Univ. of Central Florida, Orlando, FL (United States)
  3. Southwest Jiaotong Univ., Sichuan (China)

This article presents an investigation on the ductility of Mg/SiCp under nine different multiaxial loading conditions based on a unit cell (or called representative volumetric element, RVE) finite element model. The constitutive relationship of magnesium matrix is characterized by a model combined Lode angle dependent plasticity model with the CPB06 plasticity model, which is able to describe the tension-compression asymmetry in magnesium matrix. The debonding of the matrix-particle interface and matrix fracture are considered by the modified Mohr-Coulomb (MMC) fracture model. Simulation results show that the interface debonding and subsequent matrix fracture are responsible for the ductility and fracture of nanocomposite. The computational results with parametric studies are compared and well correlated with experimental data, and it finally gives a stress-based full fracture locus of Mg/SiCp nanocomposite.

Research Organization:
Univ. of Central Florida, Orlando, FL (United States)
Sponsoring Organization:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Natural Science Foundation of China
Grant/Contract Number:
EE0007864
OSTI ID:
1848595
Alternate ID(s):
OSTI ID: 1871851
Journal Information:
International Journal of Mechanical Sciences, Journal Name: International Journal of Mechanical Sciences Journal Issue: C Vol. 184; ISSN 0020-7403
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English

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