Effect of fiber properties on plastic behavior of 22 biaxial braided composites Academic Article uri icon

abstract

  • Plasticity induced non-linear behavior of 2 2 braided composites was analyzed using a two scale modeling approach based on Hill's yield function for orthotropic materials. Two 25 biaxial braided composites that used same resin (EPON 9504) but different fibers (AS4 carbon and E-glass) were analyzed under uniaxial tensile loading. The resin was chosen to be the same so that the effect of fiber type on the degree of plasticity induced non-linearity could be characterized. Characteristics such as macroscopic stress-strain behavior, stress distributions, and plastic zone locations and sizes were examined. Conclusions about the effect of fiber type on the degree of plasticity induced non-linearity depend on the parameters chosen to quantify the plasticity. The results suggest that a glass braid tow is probably more susceptible to initiation of fatigue damage than a carbon braid tow of a geometrically similar braid. 2007 Elsevier Ltd. All rights reserved.

published proceedings

  • Composites Science and Technology

author list (cited authors)

  • Goyal, D., & Whitcomb, J. D.

publication date

  • January 1, 2008 11:11 AM