- Book学术

发布求助

文献互助智能选刊最新文献

IF 5.7 1区工程技术 Q1 ENGINEERING, CIVIL

Thin-Walled Structures Pub Date : 2025-01-23 DOI:10.1016/j.tws.2025.113002

Xiaofei Ma, Ce Guo, Yuxuan Wang, Jingyu Shen, Xiao Wang

{"title":"Design, fabrication and mechanical properties of multi-dimensional graded-amplitude gyroid structures","authors":"Xiaofei Ma, Ce Guo, Yuxuan Wang, Jingyu Shen, Xiao Wang","doi":"10.1016/j.tws.2025.113002","DOIUrl":null,"url":null,"abstract":"<div><div>Graded Triply periodic minimal surface (TPMS) lattice structures have gained significant attention due to their ability to enhance the mechanical and energy-absorbing properties of uniform structures. However, current studies have focused primarily on the graded design of topological constants, relative density, size, and wall thickness and there has been less research on the design of graded-amplitude TPMS structures. Inspired by some biological gradient structures, this study presents a method for designing multi-dimensional graded-amplitude structures based on a Gyroid structure. A graded-amplitude Gyroid structure was fabricated using stainless steel 316L powder by selective laser melting (SLM). The mechanical properties of the structures were investigated using quasi-static compression tests and numerical simulation methods. The findings indicate that the manufacturing accuracy of SLM fabrication is affected by the variation in the structure amplitude. A smaller amplitude results in more particles adhering to the structure surface. Additionally, a graded-amplitude can alter the angle between the structure surface and the loading direction, which affects the mechanical properties and energy absorption capacity of the structure. The specific energy absorption of the three-dimensional gradient structure with amplitude variation range of 0-1 reaches 33.98 J/g, which is 35.76 % higher than that of the uniform structure. Furthermore, graded-amplitude can change the deformation pattern of the structure. The one-dimensional gradient structures with amplitude variations ranging from 0 to 2 displays deformation in a layer-by-layer manner. Moreover, one-dimensional and two-dimensional gradient structures display significant anisotropic properties, whereas three-dimensional gradient structures exhibit approximately orthogonal isotropic characteristics. Finally, a parametric analysis shows that the low-dimensional graded-amplitude structure has better mechanical properties and energy absorption characteristics when the amplitude variation range is greater than 1 but worse when the amplitude variation range is less than 1. This graded-amplitude design method offers new design freedom for porous structures and new ideas for developing energy-absorbing devices.</div></div>","PeriodicalId":49435,"journal":{"name":"Thin-Walled Structures","volume":"210 ","pages":"Article 113002"},"PeriodicalIF":5.7000,"publicationDate":"2025-01-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thin-Walled Structures","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0263823125000965","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, CIVIL","Score":null,"Total":0}

引用次数: 0

摘要

分级三周期极小面（TPMS）晶格结构因其能够增强均匀结构的机械和吸能特性而备受关注。然而，目前的研究主要集中在拓扑常数、相对密度、尺寸和壁厚的分级设计上，对分级振幅 TPMS 结构设计的研究较少。受一些生物梯度结构的启发，本研究提出了一种基于 Gyroid 结构的多维梯度振幅结构设计方法。通过选择性激光熔融（SLM）技术，使用不锈钢 316L 粉末制造了梯度振幅陀螺结构。采用准静态压缩试验和数值模拟方法对结构的机械性能进行了研究。研究结果表明，SLM 制造精度受结构振幅变化的影响。振幅越小，结构表面粘附的颗粒越多。此外，分级振幅可以改变结构表面与加载方向之间的角度，从而影响结构的机械性能和能量吸收能力。振幅变化范围为 0-1 的三维梯度结构的比能量吸收能力达到 33.98 J/g，比均匀结构高出 35.76%。此外，梯度振幅还能改变结构的变形模式。振幅变化范围为 0 至 2 的一维梯度结构显示出逐层变形。此外，一维和二维梯度结构显示出明显的各向异性特征，而三维梯度结构则显示出近似正交的各向同性特征。最后，参数分析表明，当振幅变化范围大于 1 时，低维梯度振幅结构具有更好的机械性能和能量吸收特性，而当振幅变化范围小于 1 时，机械性能和能量吸收特性则较差。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Design, fabrication and mechanical properties of multi-dimensional graded-amplitude gyroid structures

查看原文本刊更多论文

Design, fabrication and mechanical properties of multi-dimensional graded-amplitude gyroid structures

Graded Triply periodic minimal surface (TPMS) lattice structures have gained significant attention due to their ability to enhance the mechanical and energy-absorbing properties of uniform structures. However, current studies have focused primarily on the graded design of topological constants, relative density, size, and wall thickness and there has been less research on the design of graded-amplitude TPMS structures. Inspired by some biological gradient structures, this study presents a method for designing multi-dimensional graded-amplitude structures based on a Gyroid structure. A graded-amplitude Gyroid structure was fabricated using stainless steel 316L powder by selective laser melting (SLM). The mechanical properties of the structures were investigated using quasi-static compression tests and numerical simulation methods. The findings indicate that the manufacturing accuracy of SLM fabrication is affected by the variation in the structure amplitude. A smaller amplitude results in more particles adhering to the structure surface. Additionally, a graded-amplitude can alter the angle between the structure surface and the loading direction, which affects the mechanical properties and energy absorption capacity of the structure. The specific energy absorption of the three-dimensional gradient structure with amplitude variation range of 0-1 reaches 33.98 J/g, which is 35.76 % higher than that of the uniform structure. Furthermore, graded-amplitude can change the deformation pattern of the structure. The one-dimensional gradient structures with amplitude variations ranging from 0 to 2 displays deformation in a layer-by-layer manner. Moreover, one-dimensional and two-dimensional gradient structures display significant anisotropic properties, whereas three-dimensional gradient structures exhibit approximately orthogonal isotropic characteristics. Finally, a parametric analysis shows that the low-dimensional graded-amplitude structure has better mechanical properties and energy absorption characteristics when the amplitude variation range is greater than 1 but worse when the amplitude variation range is less than 1. This graded-amplitude design method offers new design freedom for porous structures and new ideas for developing energy-absorbing devices.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Thin-Walled Structures 工程技术-工程：土木

CiteScore

9.60

自引率

20.30%

发文量

801

审稿时长

66 days

期刊介绍： Thin-walled structures comprises an important and growing proportion of engineering construction with areas of application becoming increasingly diverse, ranging from aircraft, bridges, ships and oil rigs to storage vessels, industrial buildings and warehouses. Many factors, including cost and weight economy, new materials and processes and the growth of powerful methods of analysis have contributed to this growth, and led to the need for a journal which concentrates specifically on structures in which problems arise due to the thinness of the walls. This field includes cold– formed sections, plate and shell structures, reinforced plastics structures and aluminium structures, and is of importance in many branches of engineering. The primary criterion for consideration of papers in Thin–Walled Structures is that they must be concerned with thin–walled structures or the basic problems inherent in thin–walled structures. Provided this criterion is satisfied no restriction is placed on the type of construction, material or field of application. Papers on theory, experiment, design, etc., are published and it is expected that many papers will contain aspects of all three.