Anisogrid lattice structure in thermoplastic composite by filament gun deposition

IF 1.8 4区工程技术 Q3 ENGINEERING, MECHANICAL Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science Pub Date : 2024-09-17 DOI:10.1177/09544062241279014

Fabrizio Quadrini, Daniele Santoro, Loredana Santo

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Abstract

A new method to manufacture thermoplastic composite parts has been used to produce anisogrid lattice structures. Filament gun deposition consists of a hot-melt gun loaded with narrow thermoplastic prepreg tapes. Anisogrid lattice structures have been prototyped with 3 different geometries and 5 different numbers of layers (from 4 to 8) by using a metallic pattern and E-glass/polypropylene prepregs. Scanning calorimetry and bending tests of multi-layer samples have been used to characterize thermoplastic prepregs. Anisogrid lattice structures have been tested under tensile loads. A finite element model has been used to predict mechanical stiffness of these structures by using material properties coming from the sample characterization. Numerical models have been developed with a batch-type parametric approach to rapidly evaluate the combined effect of geometric and material parameters. A good agreement has been found between experimental and numerical data with an average difference about 4%.

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通过丝枪沉积在热塑性复合材料中形成茴香网格结构

一种制造热塑性复合材料部件的新方法已被用于生产异方格网状结构。纤丝枪沉积法由装载窄热塑性预浸带的热熔枪组成。通过使用金属图案和 E 玻璃/聚丙烯预浸料，已制作出 3 种不同几何形状和 5 种不同层数（从 4 层到 8 层）的异方格网格结构原型。多层样品的扫描量热仪和弯曲试验被用来表征热塑性预浸料。在拉伸载荷下测试了茴香网格结构。有限元模型利用样品表征得出的材料特性来预测这些结构的机械刚度。采用批量式参数方法开发的数值模型可快速评估几何参数和材料参数的综合影响。实验数据和数值数据之间的一致性很好，平均差异约为 4%。

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来源期刊

Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 工程技术-工程：机械

CiteScore

3.80

自引率

10.00%

发文量

625

审稿时长

4.3 months

期刊介绍： The Journal of Mechanical Engineering Science advances the understanding of both the fundamentals of engineering science and its application to the solution of challenges and problems in engineering.