MODELLING OF IMPERFECT BOND BETWEEN COMPOSITE MATRIX AND REINFORCEMENT BY THE FETI METHOD

Abstract eng:
Composite materials consist of a composite matrix and a reinforcement usually created by fibres. The overall properties of a composite material strongly depend on interaction between the composite matrix and the reinforcement. The contribution describes the interaction by so-called dual formulation where the original unknowns, in mechanical case displacements, are replaced by the dual unknowns, in mechanical case forces. The dual formulation is more robust and the conditions on interfaces are simpler than conditions in the original formulation. The approach is based on the FETI method which was developed as a domain decomposition method in 1991 by C. Farhat and co-workers.

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