Multi-scale modeling of heterogeneous adhesives: Effect of particle decohesion

Mohan G. Kulkarni, Philippe H. Geubelle, Karel Matouš

Research output: Contribution to journalArticle

Abstract

We examine the microscopic toughening mechanisms and their effect on the macroscopic failure response of heterogeneous adhesives made of stiff particles embedded in a more compliant matrix. The analysis relies on a multi-scale cohesive framework first described in Matouš et al. [Matouš, K., Kulkarni, M., Geubelle, P., 2008. Multiscale cohesive failure modeling of heterogeneous adhesives. Journal of the Mechanics and Physics of Solids 56, 1511-1533]. Two microscopic constitutive failure models are incorporated: an isotropic damage model to capture the fracture response of the matrix and a cohesive law to model the inclusion-matrix interfacial debonding. A detailed study of the RVE size is presented followed by a set of examples that illustrate the effect of filler size, volume fraction and particle-matrix interface properties on the macroscopic effective traction-separation law of heterogeneous adhesives.

Original languageEnglish (US)
Pages (from-to)573-583
Number of pages11
JournalMechanics of Materials
Volume41
Issue number5
DOIs
StatePublished - May 1 2009

ASJC Scopus subject areas

  • Materials Science(all)
  • Instrumentation
  • Mechanics of Materials

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