An analytical model for stress analysis of short fiber composites in power law creep matrix

The creep deformation behavior of short fiber composites has been studied by an approximate analytical model. A perfect fiber/matrix interfacial bond is assumed and a power law function is considered for describing the steady state creep behavior of the matrix material. The results obtained from the proposed analytical solution satisfy the equilibrium and constitutive creep equations. Also, a parametric study was undertaken to define the effects of geometric parameters on the steady state creep strain rate of short fiber composites. The present model is then validated using the results of finite element method. The predicted strain rate and stress components by the proposed analytical approach exhibit good agreement with the finite element results. •We developed a new analytical model for creep behavior of short fiber composites.•A power law creep function is considered for the matrix material.•The results satisfy the equilibrium and constitutive creep equations.•The predicted results exhibit good agreement with the finite element results.•The presented novel method is used to define the effects of geometric parameters.