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的填写文献信息,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!

Numerical and experimental analysis of bead cross-sectional geometry in fused filament fabrication

喷嘴 材料科学 熔丝制造 横截面(物理) 等温过程 挤压 机械 工程制图 机械工程 3D打印 复合材料 工程类 物理 热力学 量子力学
作者
Efe C. Balta,Atakan Altınkaynak
出处
期刊:Rapid Prototyping Journal [Emerald (MCB UP)]
卷期号:28 (10): 1882-1894 被引量:9
标识
DOI:10.1108/rpj-09-2021-0255
摘要

Purpose This paper aims to develop experimentally validated numerical models to accurately characterize the cross-sectional geometry of the deposited beads in a fused filament fabrication (FFF) process under various process conditions. Design/methodology/approach The presented numerical model is investigated under various fidelity with varying computational complexity. To this end, comparisons between the Newtonian, non-newtonian, isothermal and non-isothermal computational models are presented for the extrusion of polylactic acid material in an FFF process. The computational model is validated through an experimental study on an off-the-shelf FFF printer. Microscope images of experimentally printed FFF bead cross-sections corresponding to various printing conditions are digitally processed for the validation. In the experimental study, common practical printing conditions for an FFF process are tested, and the results are compared to the numerical model. Findings Microscope image analyses of the cross-sectional geometries of deposited beads show that the numerical model provides a precise characterization of the cross-sectional geometry under varying process parameters in terms of the cross-section outline, bead height and width. The results show that the nozzle-to-table distance has a great effect on the bead shape when compared to the extrusion rate at a given nozzle-to-table distance. Comparison of the various computational models show that the non-Newtonian isothermal model provides the best tradeoff between computational complexity and model accuracy. Originality/value The authors provide detailed computational models, including the extruder nozzle geometry for cases ranging from Newtonian isothermal models to non-Newtonian non-isothermal models with experimental validation. The validation study is conducted for practical process parameters that are commonly used in FFF in practice and show that the computational models provide an accurate depiction of the true process outputs. As the developed models can accurately predict process outputs, they can be used in further applications for process planning and parameter tuning.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
大幅提高文件上传限制,最高150M (2024-4-1)

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
sinan发布了新的文献求助10
3秒前
无语的冰淇淋完成签到 ,获得积分10
56秒前
完美的海完成签到 ,获得积分0
1分钟前
kaginagain发布了新的文献求助10
1分钟前
1分钟前
麦尔哈巴发布了新的文献求助10
1分钟前
Zhou应助美味肉蟹煲采纳,获得10
1分钟前
美味肉蟹煲完成签到,获得积分10
1分钟前
wangfaqing942完成签到 ,获得积分10
2分钟前
充电宝应助麦尔哈巴采纳,获得10
2分钟前
WXHL完成签到 ,获得积分10
3分钟前
星流xx完成签到 ,获得积分10
4分钟前
gy完成签到,获得积分10
4分钟前
坚强的小白菜关注了科研通微信公众号
4分钟前
击倒大树的风暴完成签到,获得积分10
4分钟前
5分钟前
oleskarabach发布了新的文献求助10
5分钟前
5分钟前
tao完成签到 ,获得积分10
5分钟前
研友_Lw43on发布了新的文献求助10
5分钟前
顾矜应助研友_Lw43on采纳,获得10
5分钟前
oleskarabach发布了新的文献求助10
5分钟前
5分钟前
5分钟前
史前巨怪完成签到,获得积分10
6分钟前
6分钟前
6分钟前
小二郎应助kikeva采纳,获得10
7分钟前
7分钟前
7分钟前
7分钟前
kikeva发布了新的文献求助10
7分钟前
搜集达人应助steleegee采纳,获得10
7分钟前
8分钟前
h0jian09完成签到,获得积分10
8分钟前
8分钟前
研友_Lw43on发布了新的文献求助10
8分钟前
天天快乐应助研友_Lw43on采纳,获得10
8分钟前
丘比特应助绝尘采纳,获得10
8分钟前
8分钟前
高分求助中
Earth System Geophysics 1000
Co-opetition under Endogenous Bargaining Power 666
Medicina di laboratorio. Logica e patologia clinica 600
Handbook of Marine Craft Hydrodynamics and Motion Control, 2nd Edition 500
Sarcolestes leedsi Lydekker, an ankylosaurian dinosaur from the Middle Jurassic of England 500
《关于整治突出dupin问题的实施意见》(厅字〔2019〕52号) 500
Language injustice and social equity in EMI policies in China 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 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 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3213132
求助须知:如何正确求助?哪些是违规求助? 2861929
关于积分的说明 8131215
捐赠科研通 2527854
什么是DOI,文献DOI怎么找? 1361893
科研通“疑难数据库(出版商)”最低求助积分说明 643529
邀请新用户注册赠送积分活动 615885