Multiscale modeling of dewetting damage in highly filled particulate composites

Philippe H Geubelle, H. M. Inglis, J. D. Kramer, J. J. Patel, N. C. Kumar, H. Tan

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Particle debonding or dewetting constitutes one of the key damage processes in highly filled particulate composites such as solid propellant and other energetic materials. To analyze this failure process, we have developed a multiscale finite element framework that combines, at the microscale, a nonlinear description of the binder response with a cohesive model of the damage process taking place in a representative periodic unit cell (PUC). To relate micro-scale damage to the macroscopic constitutive response of the material, we employ the mathematical theory of homogenization (MTH). After a description of the numerical scheme, we present the results of the damage response of a highly filled particulate composite subjected to a uniaxial macroscopic strain, and show the direct correlation between the complex damage processes taking place in the PUC and the nonlinear macroscopic constitutive response. We also present a detailed study of the PUC size and a comparison between the finite element MTH-based study and a micromechanics model of the dewetting process.

Original languageEnglish (US)
Title of host publicationMultiscale and Functionally Graded Materials - Proceedings of the International Conference, FGM IX
Pages196-202
Number of pages7
DOIs
StatePublished - Mar 13 2008
Event9th International Conference on Multiscale and Functionally Graded Materials, FGM IX - Oahu Island, HI, United States
Duration: Oct 15 2006Oct 18 2006

Publication series

NameAIP Conference Proceedings
Volume973
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other9th International Conference on Multiscale and Functionally Graded Materials, FGM IX
CountryUnited States
CityOahu Island, HI
Period10/15/0610/18/06

Keywords

  • Cohesive interface model
  • Debonding
  • Micromechanics
  • Multiscale finite element analysis
  • Particulate composites
  • Periodic unit cell

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Geubelle, P. H., Inglis, H. M., Kramer, J. D., Patel, J. J., Kumar, N. C., & Tan, H. (2008). Multiscale modeling of dewetting damage in highly filled particulate composites. In Multiscale and Functionally Graded Materials - Proceedings of the International Conference, FGM IX (pp. 196-202). (AIP Conference Proceedings; Vol. 973). https://doi.org/10.1063/1.2896776