A computationally efficient coupled multi-scale model for short fiber reinforced composites

A coupled multi-scale (macro–micro) model is developed to predict non-linear elasto-plastic behavior of short fiber reinforced composites. At the microscopic level, a recently proposed micro-mechanical model, based on two-step orientation averaging approach, used. wide range micro-structural parameters, including matrix and constitutive volume fraction aspect ratio, can be accommodated in model. Different interactions Voigt, Reuss self-consistent assumption are considered This then incorporated Finite Element macro-scale problem, enabling macro–micro simulations real-life structures/specimens. Numerical examples comparisons with experimental data, taken from literature, show that gives good predictions. Besides, several strategies techniques employed improve computational efficiency These include replacing originally utilized trapezoidal integration (for orientations calculation Eshelby tensor) more efficient schemes, using method for data storage. Comparisons efforts shows these improvements substantially decreased cost