准静态轴向加载条件下吸收能量的三维打印生物启发式 Xylotus 晶格结构的实验研究

IF 2.5 4区材料科学 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications Pub Date : 2024-03-06 DOI:10.1177/14644207241236856

R Ramakrishnan, J Hemanth Kumar, Franklin Titus, P Maharshi, R Nithish

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引用次数: 0

摘要

各行各业对坚固、轻质聚合物部件的需求促使研究人员从大自然的结构中寻找灵感。利用聚合物增材制造（PAM），特别是熔融长丝制造（FFF），复杂的生物启发晶格聚合物结构已经成功实现。本实验研究的重点是开发新型 3D 打印生物启发 Xylotus 网格结构，其元素的灵感来自木质部和莲花。主要目的是评估三维打印木莲晶格结构在准静态压缩载荷下的变形行为和能量吸收特性，并将结果与现有研究进行比较。木质部和莲花的混合（木莲花）结构表现出一种顺序破坏模式，首先是轴向裂缝，然后是屈曲。此外，对能量吸收的分析表明，木质部晶格因其坚固的管状元件而优于莲花晶格。值得注意的是，木莲花格利用了莲花和木质部的特点，显示出最高的能量吸收能力。木莲花格结构的能量吸收能力分别比木质部结构和莲花结构高出 13% 和 29.2%。与现有研究相比，木莲花格结构的能量吸收率高出 38%。此外，木莲花格结构的比能量吸收比现有研究报告中的花格结构高出 37%。这项研究为生物启发的 Xylotus 晶格结构的结构行为、能量吸收和比能量吸收提供了宝贵的见解。研究结果对弹性轻质部件的设计大有裨益，有助于生物启发结构在各行各业的广泛应用。

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Experimental investigation of 3D printed bio-inspired Xylotus lattice structure for energy absorption under quasi-static axial loading conditions

The demand for robust, lightweight polymer components in various industries has prompted researchers to turn to nature's structures for inspiration. Leveraging Polymer Additive Manufacturing (PAM), specifically Fused Filament Fabrication (FFF), complex bio-inspired lattice polymer structures have been successfully realized. This experimental study focuses on the development of novel 3D printed bioinspired Xylotus lattice structure with elements inspired by xylem and lotus. The primary goal was to evaluate the deformation behaviour and energy absorption characteristics of 3D printed Xylotus lattice structure under quasi-static compressive loading and compare the results with existing research. The hybrid (Xylotus) structure of xylem and lotus exhibited a sequential failure pattern, starting with axial cracks and followed by buckling. Furthermore, an analysis of energy absorption showed that the xylem lattice outperformed the lotus lattice, thanks to its robust tubular elements. Notably, the Xylotus lattice displayed the highest energy absorption capabilities, capitalizing on features from both lotus and xylem. The energy absorption of the Xylotus lattice structure surpassed that of the xylem and lotus structures by 13% and 29.2%, respectively. The xylotus lattice structure exhibited 38% higher energy absorption compared to the existing research. Moreover, the specific energy absorption of the Xylotus lattice structure outperformed the lattice structures reported in the existing research by 37%. This study offers valuable insights into the structural behaviour, energy absorption, and specific energy absorption of bio-inspired lattice Xylotus structure. The findings contribute significantly to the design of resilient, lightweight components, supporting the advancement of bio-inspired structures for diverse applications in various industries.

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来源期刊

Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications 工程技术-材料科学：综合

CiteScore

4.70

自引率

8.30%

发文量

166

审稿时长

3 months

期刊介绍： The Journal of Materials: Design and Applications covers the usage and design of materials for application in an engineering context. The materials covered include metals, ceramics, and composites, as well as engineering polymers. "The Journal of Materials Design and Applications is dedicated to publishing papers of the highest quality, in a timely fashion, covering a variety of important areas in materials technology. The Journal''s publishers have a wealth of publishing expertise and ensure that authors are given exemplary service. Every attention is given to publishing the papers as quickly as possible. The Journal has an excellent international reputation, with a corresponding international Editorial Board from a large number of different materials areas and disciplines advising the Editor." Professor Bill Banks - University of Strathclyde, UK This journal is a member of the Committee on Publication Ethics (COPE).