Multiscale filler-reinforced composites are emerging category of advanced materials which can replace a range of conventional materials in various applications. The nanofiller reinforcement and the synergistic inclusion of nano- and micro reinforcements in the polymer matrix could generate composites that are suitable in applications where high modulus, strength, and reasonable ductility are required. In light of the above, the nano, micro, and hybrid filler-reinforced composites were prepared by twin screw extrusion and an effort was made to understand the tensile property of the composite through experimental, analytical, and simulation methods. Hybrid multiscale (nano and micro) filler-reinforced composites were prepared by maintaining a fixed composition of microscale glass fiber as 20% (wt) and with varying composition of nanoscale MWCNTs from 1 to 5% (wt) in PP matrix. The present study proposes the modeling of nano (MWCNT) and hybrid filler (glass fiber/MWCNT) reinforcement in polypropylene (PP) matrix using finite-element analysis (FEA) by ANSYS. A representative volume element demonstrating the heterogeneous composite system is developed and simulated with appropriate boundary conditions. To establish the validity of FEA results, for the chosen nanocomposite and hybrid composite containing 3% (wt) of MWCNTs, finite-element modeling results were compared with experimental and micromechanical model values. It could be inferred that FEA results overpredicted the tensile strength and modulus with regard to experimental and analytical observations owing to the assumptions like perfect bonding and nanoclustering.

多尺度填料增强的复合材料是新兴的高级材料类别，可以在各种应用中替代一系列常规材料。纳米填料增强材料以及在聚合物基体中协同包含纳米和微增强材料可以生成适用于需要高模量，强度和合理延展性的应用的复合材料。鉴于上述，通过双螺杆挤出制备了纳米，微米和杂化填料增强的复合材料，并努力通过实验，分析和模拟方法来理解复合材料的拉伸性能。杂化多尺度（纳米和微米）填料增强复合材料的制备方法是，将微型玻璃纤维的固定组成保持为20％（重量），而在PP基体中纳米级MWCNT的组成变化为1％至5％（wt）。本研究提出了利用ANSYS的有限元分析（FEA）对聚丙烯（PP）基体中的纳米（MWCNT）和杂化填料（玻璃纤维/ MWCNT）增强材料进行建模的方法。在适当的边界条件下开发并模拟了代表异质复合系统的代表性体积元。为了确定FEA结果的有效性，对于所选的包含3％（wt）MWCNT的纳米复合材料和杂化复合材料，将有限元建模结果与实验模型和微机械模型值进行了比较。