Micro‐flow model with a new algorithm of random fiber distribution over the transverse cross‐section

Abstract A new algorithm to rapidly create representative volume elements (RVE) with random fibers distribution of high volume fractional was proposed. Derived from the classical hard core algorithm, and the “molecular force” effect was introduced to eliminate the irreversibility of the generation process. The new algorithm can create fiber microstructures with constant or random radius, and the volume fraction can reach 80% and 85% respectively. The stochastic statistical analysis of the generated fiber distribution shows that the generated microstructure is completely consistent with the spatial random distribution. Micro‐flow analysis was performed using the generated RVE, predicting the transverse permeability of the fiber tow, and the predicted results were in good agreement with the experimental results. A simple method for creating RVE with random distribution of fibers was provided for the micro‐mechanical analysis of composite materials.