A new three-dimensional finite-element model of two-dimensional, triaxially braided composites is presented in this paper. This mesoscale modeling technique is used to examine and predict the deformation and damage observed in tests of straight-sided specimens. A unit cell-based approach is used to consider the braiding architecture and the mechanical properties of the fiber tows, the matrix, and the fiber tow-matrix interface. A 0°/±60° braiding configuration has been investigated by conducting static finite-element analyses. Failure initiation and progressive degradation has been simulated in the fiber tows by using the Hashin failure criteria and a damage evolution law. The fiber tow-matrix interface was modeled by using a cohesive zone approach to capture any fiber-matrix debonding. By comparing the analytical results with those obtained experimentally, the applicability of the developed model was assessed and the failure process was investigated.
Finite-Element Model for Failure Study of Two-Dimensional Triaxially Braided Composite
Journal of Aerospace Engineering ; 24 , 2 ; 170-180
2011-04-01
11 pages
Article (Journal)
Electronic Resource
English
Finite-Element Model for Failure Study of Two-Dimensional Triaxially Braided Composite
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