Effective Stiffness of a Debonded Particle in Particulate Composites

Akihiro Wada; Yusuke Nagata; Shi Nya Motogi

doi:10.4028/www.scientific.net/KEM.334-335.33

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 334-335Effective Stiffness of a Debonded Particle in...

Effective Stiffness of a Debonded Particle in Particulate Composites

Abstract:

In this study, partially debonded spherical particles in a particulate composite are analyzed by three-dimensional finite element method to investigate their load carrying capacities, and the way to replace a debonded particle with an equivalent inclusion is examined. The variation in Young’s modulus and Poisson’s ratio of a composite with the debonded angle was evaluated for different particle arrangements and particle volume fractions, which in turn compared with the results derived from the equivalent inclusion method. Consequently, it was found that by replacing a debonded particle with an equivalent orthotropic one, the macroscopic behavior of the damaged composite could be reproduced so long as the interaction between neighboring particles is negligible.

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Periodical:

Key Engineering Materials (Volumes 334-335)

Pages:

33-36

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.334-335.33

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Online since:

March 2007

Authors:

Akihiro Wada, Yusuke Nagata, Shi Nya Motogi

Keywords:

Damage Mechanics, Debonding, Finite Element Model (FEM), Modeling, Particulate Composite

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[1] 0 0 10 20 30 40 50 60 70 SC, D1 SC, D2 BCC, D1 BCC, D2 FCC, D1 FCC, D2 Damage variables θ Debonded angle [deg. ].

DOI: 10.7554/elife.09100.029

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[1] 0 0 10 20 30 40 50 60 70 SC, D1 SC, D2 BCC, D1 BCC, D2 FCC, D1 FCC, D2 Damage variables Debonded angle [deg. ]θ Vf=0. 1 Vf=0. 3 (a) Debonded particle (b) Equivalent particle Fig. 5 Replacement of a debonded particle with an equivalent particle. σ σ σ σ replace mCpC pC.

DOI: 10.7554/elife.09100.029

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[1] 0 0 10 20 30 40 50 60 70 D1, Vf=0. 01 D2, Vf=0. 01 D1, Vf=0. 1 D2, Vf=0. 1 Damage variables θ Debonded angle [deg. ] Fig. 7 Variation of damage variables with the debonded angle for different particle volume fractions. BCC.

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