Modeling Damage in a Plain Weave Fabric-Reinforced Composite Material
作者： WS Johnson , JE Masters , TK O'Brien , DM Blackketter , DE Walrath
DOI: 10.1520/CTR10364J
关键词: Tension (physics) 、 Finite element method 、 Composite material 、 Shear (sheet metal) 、 Materials science 、 Micromechanics 、 Plain weave 、 Stiffness 、 Composite number 、 Epoxy
摘要: A method for describing damage propagation in a woven fabric-reinforced composite material subjected to tension or shear loading is presented. three-dimensional unit cell description of plain weave graphite/epoxy was constructed. From this description, finite element models were generated. An incremental iterating algorithm developed analyze response. This program included capabilities model nonlinear constitutive behavior (anisotropic plasticity), and scheme estimate the effects by stiffness reduction. Tension loadings modeled. Results from analysis compared favorably with experimental data. Nonlinear stress-strain fabric shown be principally caused rather than plastic deformation matrix.
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