The mechanical behavior of BaTiO₃ incorporated High-Density Polyethylene (HDPE) nanocomposites up to 40% in volume is investigated experimentally through tensile tests. The results showed that Young's modulus increased with increasing amount of BaTiO₃ particles, indicating a higher stiffness. A numerical approach based on a micromechanical model showed the same trend, but with values lower than the experimental ones for all the composite concentrations. The influence of the particle distribution (uniform or random) in the Representative Volume Element (RVE) as well as the RVE size were particularly investigated. The effect of the strain and strain rate on the Young's modulus was highlighted experimentally and numerically. The influence of the filler particles on the strain and stress field distributions in RVE was shown to be a key parameter in the mechanical response of the nanocomposites and revealed the necessity to take into account the true behavior of HDPE in the numerical modeling.

通过拉伸试验对掺入体积高达 40% 的高密度聚乙烯 (HDPE) 纳米复合材料的 BaTiO _{3的机械性能进行了实验研究。}结果表明，杨氏模量随着BaTiO _{3用量的增加而增加。}颗粒，表明较高的刚度。基于微机械模型的数值方法显示出相同的趋势，但所有复合浓度的值均低于实验值。特别研究了代表性体积元素 (RVE) 中颗粒分布（均匀或随机）以及 RVE 尺寸的影响。应变和应变率对杨氏模量的影响在实验和数值上都得到了强调。填料颗粒对 RVE 中应变和应力场分布的影响被证明是纳米复合材料机械响应的关键参数，并揭示了在数值建模中考虑 HDPE 真实行为的必要性。