Thickness optimisation in 3D printed concrete structures

IF 9.6 1区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY
Romain Mesnil, Pedro Sarkis Rosa, Léo Demont
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引用次数: 0

Abstract

Layer pressing in 3D concrete printing (3DCP) allows to continuously modify the thickness of printed laces by changing adequately the robot speed. However, most applications consider a constant thickness throughout the printing and do not leverage all the possibilities from robotic technologies. The aim of this paper is to demonstrate the potential offered by thickness variation to achieve higher structural efficiency and to lower the material usage. To do so, analytical solutions for stress and buckling of tapered heavy column are recalled and highlight a potential of reduction of 25% of material for simple geometries with materials with low structuration rate. Numerical optimisation based on a penalty method and on the finite element simulation with shell elements is then implemented to minimise the volume of printed components for more complex geometries. Promising results are observed and should encourage the 3DCP community to further study this previously unexplored dimension of the process.

Abstract Image

3D打印混凝土结构厚度优化
在3D混凝土打印(3DCP)中,层压可以通过适当改变机器人速度来连续修改打印鞋带的厚度。然而,大多数应用程序在整个打印过程中考虑恒定的厚度,并且没有利用机器人技术的所有可能性。本文的目的是展示厚度变化提供的潜力,以实现更高的结构效率和降低材料的使用。为此,回顾了锥形重柱的应力和屈曲的分析解决方案,并强调了使用低结构率材料的简单几何形状减少25%材料的潜力。基于惩罚方法和壳单元有限元模拟的数值优化,然后实现了更复杂几何形状的打印部件的体积最小化。观察到有希望的结果,应该鼓励3DCP社区进一步研究这个以前未探索的过程维度。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Automation in Construction
Automation in Construction 工程技术-工程:土木
CiteScore
19.20
自引率
16.50%
发文量
563
审稿时长
8.5 months
期刊介绍: Automation in Construction is an international journal that focuses on publishing original research papers related to the use of Information Technologies in various aspects of the construction industry. The journal covers topics such as design, engineering, construction technologies, and the maintenance and management of constructed facilities. The scope of Automation in Construction is extensive and covers all stages of the construction life cycle. This includes initial planning and design, construction of the facility, operation and maintenance, as well as the eventual dismantling and recycling of buildings and engineering structures.
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