Abstract

In this study, the mechanical properties, in terms of stress–strain curves, of additively manufactured polymeric composite materials, Tango black plus (TB+), vero white plus (VW ), and their intermediate materials with different mixing ratios, are reported. The ultimate tensile strength and elongation at break are experimentally measured using ASTM standard tensile test. As the content of VM+ increases, the strength of the polymeric materials increases and elongation decreases. Additionally, the Shore A hardness of the materials increases with reduced TB+ concentration. In parallel to the experiment, hyperelastic models are employed to fit the experimental stress–strain curves. The shear modulus of the materials is obtained from the Arruda–Boyce model, and it increases with reduced concentration of TB+. Due to the good quality of the fitted data, it is suggested that the Arruda–Boyce model is the best model for modeling the additively manufactured polymeric materials. With the well characterized and modeled mechanical properties of these hyperelastic materials, designers can conduct computational study for application in flexible electronics field.

中文翻译：

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增材制造的高分子复合材料拉伸性能的组合建模与实验研究

摘要

在这项研究中，报告了用增材制造的聚合物复合材料，探戈黑加（TB +），维罗白加（VW）及其混合比不同的中间材料的机械性能，根据应力-应变曲线。极限拉伸强度和断裂伸长率是使用ASTM标准拉伸试验通过实验测量的。随着VM +含量的增加，聚合物材料的强度增加并且伸长率降低。另外，材料的肖氏A硬度随着TB +浓度的降低而增加。与实验并行，采用超弹性模型拟合实验应力-应变曲线。材料的剪切模量是从Arruda-Boyce模型获得的，并且随着TB +浓度的降低而增加。由于拟合数据的质量很高，建议Arruda-Boyce模型是对增材制造的聚合物材料进行建模的最佳模型。利用这些超弹性材料的良好表征和建模机械性能，设计人员可以进行计算研究，以应用于柔性电子领域。