In this paper the nonlinear homogenized response of elastic composite materials under finite deformations is investigated. The composite material is described by a periodic microstructure containing microcracks in frictionless unilateral self-contact. Stability and uniqueness aspects of the homogenized response along prescribed monotonic macro-strain paths are analyzed by using an updated Lagrangian formulation. Numerical applications are carried out by using a coupled FE methodology and are devoted to the in-plane problem of an hyperelastic model of continuously reinforced composite with interface debonding. Results evidence the effects of crack self-contact and of microscopic defects on the homogenized composite properties.
Nonlinear homogenized response of composite materials containing microscopic defects
BRUNO, Domenico;Greco F;NEVONE BLASI, Paolo;
2014-01-01
Abstract
In this paper the nonlinear homogenized response of elastic composite materials under finite deformations is investigated. The composite material is described by a periodic microstructure containing microcracks in frictionless unilateral self-contact. Stability and uniqueness aspects of the homogenized response along prescribed monotonic macro-strain paths are analyzed by using an updated Lagrangian formulation. Numerical applications are carried out by using a coupled FE methodology and are devoted to the in-plane problem of an hyperelastic model of continuously reinforced composite with interface debonding. Results evidence the effects of crack self-contact and of microscopic defects on the homogenized composite properties.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
