Abstract Additive manufacturing technologies provide new opportunities for the manufacturing of components with customisable geometries and mechanical properties. In particular, fused deposition modelling (FDM) allows for customisable mechanical properties by controlling the void density and filament orientation. In this work, a methodology is provided for the prediction of the mechanical properties and mesostructure of FDM polymers. To this end, we propose a computational framework for the simulation of the printing process taking as input data specific manufacturing parameters and filament properties. A new two-stage thermal and sintering model is developed to predict the bond formation process between filaments. The model predictions are validated against original experimental data for acrylonitrile butadiene styrene (ABS) components manufactured by FDM. A parametric study is finally presented to interpret the effects of different manufacturing parameters on the mechanical performance of ABS specimens. Overall, the proposed framework offers new avenues for the design of 3D printed polymeric components with custom properties, directly in terms of manufacturing settings.

中文翻译：

---

FDM 3D 打印聚合物的设计：机械性能预测的实验建模方法

摘要 增材制造技术为制造具有可定制几何形状和机械性能的部件提供了新的机会。特别是，熔融沉积建模 (FDM) 允许通过控制空隙密度和细丝方向来定制机械性能。在这项工作中，提供了一种方法来预测 FDM 聚合物的机械性能和细观结构。为此，我们提出了一个用于模拟打印过程的计算框架，将特定的制造参数和灯丝特性作为输入数据。开发了一种新的两阶段热和烧结模型来预测细丝之间的粘合形成过程。模型预测已根据 FDM 制造的丙烯腈丁二烯苯乙烯 (ABS) 组件的原始实验数据进行验证。最后提出了一项参数研究，以解释不同制造参数对 ABS 试样机械性能的影响。总体而言，所提出的框架直接在制造设置方面为具有自定义属性的 3D 打印聚合物组件的设计提供了新途径。