Jordan Journal of Civil Engineering

Paper Detail

Effect of Shear Stresses on Failure of Fibrous Composite Materials Accounting for Nonlinear Material Behavior

Volume 7, No. 4, 2013
Received: 2013/09/22, Accepted:

Authors:

Ghazi Abu-Farsakh;

Abstract:

Variation of shear stresses  xy on failure behavior of different composite materials was investigated for two types of composites; Boron-Epoxy Narmco 5505 and Carbon-Epoxy AS4 (3501-6). The effect of material nonlinearity on failure behavior of unidirectional fibrous composite laminates was considered for several fiber-orientation angles; ϴ=15, 30, 45, 60 and 75 degrees. An energy-based nonlinear material model was adopted to predict the mechanical properties of a unidirectional composite lamina. A compatible failure criterion for nonlinear composite materials was utilized which incorporates the material model into the failure criterion. The resulting failure envelopes were compared for all the cases.

Keywords:

Shear stress, Failure envelope, Composite material, Nonlinear behavior, Fiberorientation