Modeling of nano-reinforced polymer composites: Microstructure effect on Young's modulus

► We developed an algorithm in ABAQUS to generate multiparticle unit cell models of nanocomposites. ► We studied the influence of microstructural parameters on elastic properties of nanocomposites. ► The effective interface model is improved by introducing a parameter of clustering effects. ► The nanoparticles with higher aspect ratios ensure higher stiffness than the round nanoparticles.