Finite Element Modeling for Predicting Out-Of-Plane Compressive Behavior in Fiber-Reinforced Composites

Considerable efforts have focused on micromechanical Finite Element (FE) modeling to replicate the out-of-plane compressive behavior of fiber-reinforced polymer composites (FRP). Microstructure features like fiber distribution, volume fraction, minimum distance between fibers, and void contents could significantly influence mechanical properties, necessitating a computational micromechanics approach. Utilizing the representative volume element (RVE) concept enables comprehensive assessment without constraints on material or geometry, aiding in damage prediction. This study employs varied parameters to predict compressive behavior accurately. Understanding and controlling these microstructure features are vital for optimizing composite performance. The Monte Carlo method in MATLAB facilitates generating random fiber distributions and varying volume fractions, essential for RVE simulations in Abaqus. Through Monte Carlo simulations, realistic fiber arrangements are created, considering randomness and irregularity. Additionally, Adaptive Mesh Refinement improves simulation efficiency. The combined approach captures the variability in composites, leading to more accurate predictions of mechanical behavior. Simulation results highlight the significant impact of volume fraction and the influence of void contents on compressive performance.