PLA Double-Spirals Offering Enhanced Spatial Extensibility

IF 4.2 3区 材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY
Mohsen Jafarpour, Stanislav N. Gorb
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Abstract

Inspired by natural spiral curves, this study aims to present a strategy to find a compromise between extensibility and load-bearing capacity in structures made from polylactic acid (PLA) as a brittle material. Herein, four geometrically distinct double-spiral modules are fabricated using a three-dimensional (3D) printer and subjected to tension, in-plane sliding, and out-of-plane sliding to assess both their in-plane and out-of-plane mechanical performance. Subsequently, a modular spiral-based metastructure is developed and tested under tension in two different directions. The results show that the maximum extension of the modules under different loading scenarios varies from 9 to 86 mm, while their load-bearing capacity ranges between 18 and 78 N. These significant variations highlight the considerable influence of both geometry and loading conditions on the mechanical behavior of the double-spiral modules. Moreover, the 250% horizontal and 130% vertical extensibility of the metastructure emphasize the importance of the spatial orientation of the modules in determining the efficiency of spiral-based metastructures. This study suggests that double-spirals with adjustable mechanical properties, if designed rationally, can offer a promising strategy to address the limited deformability of materials like PLA, and when arranged in specific spatial configurations, they can contribute to the development of energy-dissipative metastructures with enhanced extensibility.

Abstract Image

提供更强空间扩展性的 PLA 双螺旋结构
受自然螺旋曲线的启发,本研究旨在提出一种策略,在由聚乳酸(PLA)作为脆性材料制成的结构中找到延伸性和承载能力之间的折衷。在此,使用三维(3D)打印机制造了四个几何上不同的双螺旋模块,并对其进行了张力、面内滑动和面外滑动,以评估其面内和面外机械性能。随后,开发了模块化螺旋基元结构,并在两个不同方向的张力下进行了测试。结果表明:不同加载工况下,双螺旋模组的最大伸长量在9 ~ 86 mm之间,承载能力在18 ~ 78 n之间。这些显著的变化凸显了几何形状和加载条件对双螺旋模组力学行为的显著影响。此外,元结构的250%水平可扩展性和130%垂直可扩展性强调了模块的空间取向在决定螺旋元结构效率方面的重要性。该研究表明,具有可调节力学性能的双螺旋结构,如果设计合理,可以为解决PLA等材料有限的变形能力提供一种有希望的策略,并且当它们以特定的空间构型排列时,可以促进具有增强可扩展性的耗能元结构的发展。
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来源期刊
Macromolecular Materials and Engineering
Macromolecular Materials and Engineering 工程技术-材料科学:综合
CiteScore
7.30
自引率
5.10%
发文量
328
审稿时长
1.6 months
期刊介绍: Macromolecular Materials and Engineering is the high-quality polymer science journal dedicated to the design, modification, characterization, processing and application of advanced polymeric materials, including membranes, sensors, sustainability, composites, fibers, foams, 3D printing, actuators as well as energy and electronic applications. Macromolecular Materials and Engineering is among the top journals publishing original research in polymer science. The journal presents strictly peer-reviewed Research Articles, Reviews, Perspectives and Comments. ISSN: 1438-7492 (print). 1439-2054 (online). Readership:Polymer scientists, chemists, physicists, materials scientists, engineers Abstracting and Indexing Information: CAS: Chemical Abstracts Service (ACS) CCR Database (Clarivate Analytics) Chemical Abstracts Service/SciFinder (ACS) Chemistry Server Reaction Center (Clarivate Analytics) ChemWeb (ChemIndustry.com) Chimica Database (Elsevier) COMPENDEX (Elsevier) Current Contents: Physical, Chemical & Earth Sciences (Clarivate Analytics) Directory of Open Access Journals (DOAJ) INSPEC (IET) Journal Citation Reports/Science Edition (Clarivate Analytics) Materials Science & Engineering Database (ProQuest) PASCAL Database (INIST/CNRS) Polymer Library (iSmithers RAPRA) Reaction Citation Index (Clarivate Analytics) Science Citation Index (Clarivate Analytics) Science Citation Index Expanded (Clarivate Analytics) SciTech Premium Collection (ProQuest) SCOPUS (Elsevier) Technology Collection (ProQuest) Web of Science (Clarivate Analytics)
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