A micromechanical approach to the mechanical characterization of 3D-printed composites

A. Sayyidmousavi, Z. Fawaz
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引用次数: 2

Abstract

Aiming for the development of experimentally validated computational models to predict the mechanical properties of 3D-printed composites, the present study proposes a micromechanical approach by using a simplified unit cell model to characterize the material properties and behavior of 3D-printed composites manufactured through fused deposition modeling. The effective properties of the voided polymer matrix phase of the material are computed by calculating the void density as a tensorial meso-structural variable. These effective properties along with those of the fiber are input into a simplified micromechanical model to predict the material properties of the 3D-printed composite. The predictions are seen to be in very good agreement with the experimental values. The present approach is much simpler and less computationally costly compared to the finite element homogenization method. In addition, the present approach has the potential to simulate the response of the 3D-printed composite under different loading conditions.
3d打印复合材料力学特性的微力学方法
为了开发实验验证的计算模型来预测3d打印复合材料的力学性能,本研究提出了一种微力学方法,通过简化的单位胞模型来表征通过熔融沉积建模制造的3d打印复合材料的材料性能和行为。通过计算孔隙密度作为张量细观结构变量,计算了材料的孔隙聚合物基体相的有效性能。将这些有效性能与纤维的性能一起输入到简化的微力学模型中,以预测3d打印复合材料的材料性能。预测结果与实验值非常吻合。与有限元均匀化方法相比,该方法更简单,计算成本更低。此外,本方法具有模拟3d打印复合材料在不同载荷条件下的响应的潜力。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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