Cohesive modeling of dewetting in particulate composites: micromechanics vs. multiscale finite element analysis

The effect of damage due to particle debonding on the constitutive response of highly filled composites is investigated using two multiscale homogenization schemes: one based on a closed-form micromechanics solution, and the other on the finite element implementation of the mathematical theory of ho...

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Bibliographic Details
Published in:Mechanics of materials 2007-06, Vol.39 (6), p.580-595
Main Authors: Inglis, H.M., Geubelle, P.H., Matouš, K., Tan, H., Huang, Y.
Format: Article
Language:English
Subjects:
Damage mechanics
Debonding
Exact sciences and technology
Fracture mechanics (crack, fatigue, damage...)
Fundamental areas of phenomenology (including applications)
Homogenization
Micromechanics
Microstructure
Particle-reinforced composites
Physics
Solid mechanics
Structural and continuum mechanics
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Summary:The effect of damage due to particle debonding on the constitutive response of highly filled composites is investigated using two multiscale homogenization schemes: one based on a closed-form micromechanics solution, and the other on the finite element implementation of the mathematical theory of homogenization. In both cases, the particle debonding process is modeled using a bilinear cohesive law which relates cohesive tractions to displacement jumps along the particle–matrix interface. The analysis is performed in plane strain with linear kinematics. A detailed comparative assessment between the two homogenization schemes is presented, with emphasis on the effect of volume fraction, particle size and particle-to-particle interaction.
ISSN:0167-6636
1872-7743
DOI:10.1016/j.mechmat.2006.08.008