填充物密度和图案对 FDM 3D 打印 PLA 多层三明治的比负载能力的影响,Journal of Polymer Engineering

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填充物密度和图案对 FDM 3D 打印 PLA 多层三明治的比负载能力的影响
Journal of Polymer Engineering ( IF 1.7 ) Pub Date : 2022-02-01 , DOI: 10.1515/polyeng-2021-0223
József Dobos ₁ , Muammel M. Hanon _{1,

2} , István Oldal ₃

Affiliation

三维 (3D) 打印设置允许在一块内同时存在不同填充的部分。这意味着使用不均匀的内部材料结构。了解 3D 打印塑料部件可以承受的负载能力会导致填充度降低，从而降低某些地方的使用材料量。这种方法在生产过程中有两个优点：(i) 减少材料使用和 (ii) 减少制造时间，两者都是降低成本的因素。本研究旨在找到制造具有不同填充度的弯曲试件的最佳比例。为了实现这一目标，进行了实验测试，以使用不同的填充密度和图案对获得拉伸强度和弹性模量。这为创建基于准确和真实材料特性的工作机械模型提供了基础。因此，使用 Ansys Workbench 软件对夹层结构试样进行了一系列虚拟弯曲测试实验。通过这样做，确定了在给定填充模式和密度下具有最高特定负载能力的最佳厚度（三明治内层）。据我们所知，当前的实验程序和设置优化方法未在其他地方讨论。对于给定的填充模式和密度，确定了具有最高特定负载能力的最佳厚度（三明治内层）。据我们所知，当前的实验程序和设置优化方法未在其他地方讨论。对于给定的填充模式和密度，确定了具有最高特定负载能力的最佳厚度（三明治内层）。据我们所知，当前的实验程序和设置优化方法未在其他地方讨论。

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Effect of infill density and pattern on the specific load capacity of FDM 3D-printed PLA multi-layer sandwich

Three-dimensional (3D) printing settings allow the existence of differently filled sections together within a piece. That means the use of inhomogeneous internal material structure. Knowing the load capacity that 3D printed plastic parts can withstand leads to the reduction of the filling degree, thus the amount of the used material in certain places. This approach has two advantages during production: (i) less material use and (ii) reduced manufacturing time, both being cost-reducing factors. The present research aims to find the optimal proportions for fabricating a bending test piece with varying filling degrees. To achieve this goal, experimental tests were performed for obtaining tensile strength and modulus of elasticity using different pairs of infill density and pattern. This provided a basis for creating a working mechanical model based on accurate and realistic material properties. Hence, a series of virtual bending test experiments were conducted on a sandwich structure specimen employing Ansys Workbench software. By doing so, the optimal thickness (of the sandwich’s inner layer) with the highest specific load capacity for the given filling patterns and densities were determined. To the best of our knowledge, the current procedure of experiments and method of settings optimization were not discussed elsewhere.

更新日期：2022-02-01

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