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One of the key aspects governing the mechanical performance of compositematerials is debonding: the local separation of reinforcing constituents frommatrix when the interfacial strength is exceeded. In this contribution, twostrategies to estimate the overall response of particulate composites withrigid-brittle interfaces are investigated. The first approach is based on adetailed numerical representation of a composite microstructure. The resultingproblem is discretized using the Finite Element Tearing and Interconnectingmethod, which, apart from computational efficiency, allows for an accuraterepresentation of interfacial tractions as well as mutual inter-phase contactconditions. The candidate solver employs the assumption of uniform fieldswithin the composite estimated using the Mori-Tanaka method. A set ofrepresentative numerical examples is presented to assess the added value of thedetailed numerical model over the simplified micromechanics approach.

Homogenization of composites with interfacial debonding using duality-based solver and micromechanics