亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

Evaluation of the effect of core lattice topology on the properties of sandwich panels produced by additive manufacturing

平行六面体 夹层结构复合材料 夹芯板 格子(音乐) 抗弯强度 结构工程 抗弯刚度 蜂窝结构 有限元法 芯(光纤) 材料科学 复合材料 几何学 拓扑(电路) 数学 工程类 物理 组合数学 声学
作者
JG Monteiro,Manuel Sardinha,F Alves,A. M. R. Ribeiro,L. Reis,Augusto Moita de Deus,Marco Leite,M. Fátima Vaz
出处
期刊:Proceedings of the Institution of Mechanical Engineers, Part L: Journal of Materials: Design and Applications [SAGE Publishing]
卷期号:235 (6): 1312-1324 被引量:19
标识
DOI:10.1177/1464420720958015
摘要

Sandwich structures are frequently used in automotive, aerospace and marine industries, as they provide adequate functional properties. The two-dimensional regular hexagonal cell shape, i.e. honeycomb is the most used core structure in sandwich panels. Recently, a new type of cellular structures composed of lattice struts has been proposed, as they combine high stiffness, strength and energy absorption with low weight. The main purpose of this research is to investigate the effect of the lattice topology on the flexural behaviour of sandwich panels. Five lattice geometries inspired in crystalline structures were designed, namely, body-centred parallelepiped, body-centred parallelepiped with struts in z-axis, body- and face-centred parallelepiped with struts in z-axis, face-centred parallelepiped with struts in z-axis and parallelepiped simple. The relative density of all the lattices was kept constant as 0.3. Both numerical and experimental approaches were used to evaluate the flexural properties and failure behaviour of the sandwich structures under three-point bending tests. The numerical analysis was undertaken with the finite element software NX Nastran. Taking advantage of additive manufacturing technologies, material extrusion was used to produce polylactic acid samples with the configurations aforementioned. The sandwich panels are composed by a single layer formed by the lattice core and two thin plates, at the bottom and top. The three parts of the panel were manufactured all together. The simulation results indicate that, among the lattices studied, topologies body-centred parallelepiped with struts in z-axis and body- and face-centred parallelepiped with struts in z-axis exhibit higher strength, while body- and face-centred parallelepiped with struts in z-axis shows higher stiffness and higher energy absorption, attaining values that do not differ much from the ones obtained with a two-dimensional hexagonal cellular structure, with the same relative density. As a consequence, some of the geometries studied may have the potential to be considered as alternatives to conventional structures in the design of sandwich structures.

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
7秒前
11秒前
16秒前
祖之微笑发布了新的文献求助10
23秒前
简因完成签到 ,获得积分10
29秒前
英姑应助苹果果汁采纳,获得30
33秒前
kaka完成签到,获得积分10
42秒前
52秒前
Jason发布了新的文献求助10
58秒前
1分钟前
1分钟前
量子星尘发布了新的文献求助10
1分钟前
小乘号子发布了新的文献求助10
1分钟前
1分钟前
1分钟前
1分钟前
子平完成签到 ,获得积分0
1分钟前
科研通AI5应助哲别采纳,获得10
1分钟前
gszy1975完成签到,获得积分10
1分钟前
小乘号子发布了新的文献求助10
2分钟前
2分钟前
Akim应助小乘号子采纳,获得10
2分钟前
量子星尘发布了新的文献求助10
2分钟前
yi完成签到,获得积分10
2分钟前
英俊的铭应助执着的草丛采纳,获得10
2分钟前
科研通AI2S应助科研通管家采纳,获得10
3分钟前
slayers完成签到 ,获得积分20
3分钟前
Billy完成签到,获得积分0
3分钟前
3分钟前
3分钟前
3分钟前
SYLH应助Billy采纳,获得10
3分钟前
量子星尘发布了新的文献求助10
4分钟前
lascqy完成签到 ,获得积分10
4分钟前
4分钟前
4分钟前
优秀黑夜发布了新的文献求助10
4分钟前
Ava应助优秀黑夜采纳,获得10
4分钟前
冰留完成签到 ,获得积分10
5分钟前
5分钟前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Picture Books with Same-sex Parented Families: Unintentional Censorship 700
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3976665
求助须知:如何正确求助?哪些是违规求助? 3520756
关于积分的说明 11204771
捐赠科研通 3257528
什么是DOI,文献DOI怎么找? 1798733
邀请新用户注册赠送积分活动 877897
科研通“疑难数据库(出版商)”最低求助积分说明 806629