Investigation of Compressive Behavior of Pre-folded Thin-walled Column Fabricated by 3D Printing

Q1 Earth and Planetary Sciences
F. Triawan, Elin Rachmawati, B. Budiman, D. W. Djamari, A. Saputro, Ilman Arpi
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引用次数: 6

Abstract

This paper reveals the mechanical behavior of thin-walled columns with pre-folded patterns subjected to compressive loading. The column specimens (Polylactic Acid) are fabricated using Fused Deposition Modeling 3D printer and subjected to quasi-static compressive loading to investigate their mechanical behavior (by modifying the specimens' cross-section patterns and folding angles). The column specimens are simulated by finite element analysis to understand how the stress distribution and local deformation affecting the stiffness, strength, and overall deformation. The experiments showed that introducing the pre-folded pattern in a thin-walled column with different cross-sections can dramatically lower its structural stiffness (85%) and compressive strength (69%), but increase its deformability (115%), which is good agreement with numerical simulation. The variation of cross-section patterns and pre-folding angle could effectively modify the compressive mechanical behavior. Moreover, the results demonstrate how the FDM 3D Printing method can be used in fabricating a thin-walled column with irregular shapes and then to modify its deformability. This finding can be useful for designing any complex structures requiring specific stiffness and deformation such as suspension devices, prosthetic devices in biomechanics, and robotic structures.
3D打印预制折叠薄壁柱压缩性能研究
本文揭示了预折叠薄壁柱在压缩荷载作用下的力学行为。采用熔融沉积建模3D打印机制备柱状试样(聚乳酸),并对其进行准静态压缩加载(通过改变试样的横截面模式和折叠角度),研究柱状试样的力学行为。通过有限元模拟柱样,了解应力分布和局部变形对刚度、强度和整体变形的影响。试验结果表明,在不同截面薄壁柱中引入预折叠模式,可显著降低其结构刚度(85%)和抗压强度(69%),但可提高其变形能力(115%),与数值模拟结果吻合较好。改变预折角和截面模式可以有效地改变材料的压缩力学行为。此外,研究结果还证明了FDM 3D打印方法可以用于制造不规则形状的薄壁柱,并对其变形能力进行修改。这一发现可用于设计任何需要特定刚度和变形的复杂结构,如悬浮装置、生物力学中的假体装置和机器人结构。
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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来源期刊
Indonesian Journal of Science and Technology
Indonesian Journal of Science and Technology Engineering-Engineering (all)
CiteScore
11.20
自引率
0.00%
发文量
10
审稿时长
16 weeks
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