An Improved Shear-Lag Model for a Single Fiber Composite with a Ductile Matrix
A shear-lag model is developed to predict the stress distributions in and around an isolated fiber in a single-fiber polymer matrix composite (PMC) subjected to uniaxial tensile loading and unloading along the fiber direction. The matrix is assumed to be an elasto-plastic material that deforms according to J2 flow theory. The stress distributions are obtained numerically and compared with a different shear-lag model that employs total strain theory as a constitutive equation of the matrix material. An effect of the difference between the models on the derived stress state is discussed.
J.K. Kim, D.Z. Wo, L.M. Zhou, H.T. Huang, K.T. Lau and M. Wang
S. Kimura et al., "An Improved Shear-Lag Model for a Single Fiber Composite with a Ductile Matrix ", Key Engineering Materials, Vols. 334-335, pp. 333-336, 2007