A parametric modelling strategy for the numerical simulation of 3D concrete printing with complex geometries

Ooms, Ticho; Vantyghem, Gieljan; Coile, Ruben Van; Corte, Wouter De

doi:10.1016/j.addma.2020.101743

Cited by 25 publications

(9 citation statements)

References 22 publications

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“…The integration of 3DPC in the design and construction of built environments brings many promising advantages, such as minimal manpower and labor costs, rapid fabrication, reduction of construction wastes, cost-effectiveness, formwork-free construction, and increased flexibility with precise architectural design. In addition to conventional building components, entirely unique and complex configurations, which are not viable with conventional formwork, can be constructed using 3DPC [10,[12][13][14][15]. In addition, 3DPC provides lesser self-weight structures with topology optimization, and further reduction of weight and enhanced thermal insulation properties could be achieved by developing mix designs using materials with low thermal conductivity [16,17].…”

Section: Introductionmentioning

confidence: 99%

Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

et al. 2021

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Three-dimensional-printed concrete (3DPC), which is also termed as digital fabrication of concrete, offers potential development towards a sustainable built environment. This novel technique clearly reveals its development towards construction application with various global achievements, including structures such as bridges, houses, office buildings, and emergency shelters. However, despite the enormous efforts of academia and industry in the recent past, the application of the 3DPC method is still challenging, as existing knowledge about its performance is limited. The construction industry and building sectors have a significant share of the total energy consumed globally, and building thermal efficiency has become one of the main driving forces within the industry. Hence, it is important to study the thermal energy performance of the structures developed using the innovative 3DPC technique. Thermal characterization of walls is fundamental for the assessment of the energy performance, and thermal insulation plays an important role in performance enhancements. Therefore, in this study, different wall configurations were examined, and the conclusions were drawn based on their relative energy performance. The thermal performance of 32 different 3DPC wall configurations with and without cavity insulation were traced using validated finite element models by measuring the thermal transmittance value (U-value). Our study found that the considered 3DPC cavity walls had a low energy performance, as the U-values did not satisfy the standard regulations. Thus, their performance was improved with cavity insulation. The simulation resulted in a minimum thermal transmittance value of 0.34 W/m2·K. Additionally, a suitable equation was proposed to find the U-values of 100 mm-thick cavity wall panels with different configurations. Furthermore, this study highlights the importance of analytical and experimental solutions as an outline for further research

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Section: Introductionmentioning

confidence: 99%

Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

et al. 2021

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“…Higher energy power or faster scanning speeds can be employed to improve printing efficiency, but this approach may sacrifice printing accuracy. One solution is to optimize printing parameters through numerical simulation [ 207 ], in-situ monitoring [ 208 ], or artificial intelligence [ 209 , 210 ] to circumvent this difficulty. Moreover, complex, time-consuming post-processes add to the overall printing time.…”

Section: Discussion and Future Trendsmentioning

confidence: 99%

Scientometric Analysis and Systematic Review of Multi-Material Additive Manufacturing of Polymers

et al. 2021

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Multi-material additive manufacturing of polymers has experienced a remarkable increase in interest over the last 20 years. This technology can rapidly design and directly fabricate three-dimensional (3D) parts with multiple materials without complicating manufacturing processes. This research aims to obtain a comprehensive and in-depth understanding of the current state of research and reveal challenges and opportunities for future research in the area. To achieve the goal, this study conducts a scientometric analysis and a systematic review of the global research published from 2000 to 2021 on multi-material additive manufacturing of polymers. In the scientometric analysis, a total of 2512 journal papers from the Scopus database were analyzed by evaluating the number of publications, literature coupling, keyword co-occurrence, authorship, and countries/regions activities. By doing so, the main research frame, articles, and topics of this research field were quantitatively determined. Subsequently, an in-depth systematic review is proposed to provide insight into recent advances in multi-material additive manufacturing of polymers in the aspect of technologies and applications, respectively. From the scientometric analysis, a heavy bias was found towards studying materials in this field but also a lack of focus on developing technologies. The future trend is proposed by the systematic review and is discussed in the directions of interfacial bonding strength, printing efficiency, and microscale/nanoscale multi-material 3D printing. This study contributes by providing knowledge for practitioners and researchers to understand the state of the art of multi-material additive manufacturing of polymers and expose its research needs, which can serve both academia and industry.

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“…In this project a novel 3DCP technology with a fast-setting material was used to cope with the steep overhangs present in the geometry of the bridge and to allow for increased buildability. However, still some measures were taken to facilitate the printing process and reduce the risk of premature failure, such as numerical analysis using previously developed simulation tools [5,6] and 3D-printed spacers as temporary, lateral supports.…”

Section: D Concrete Printingmentioning

confidence: 99%

The Production of a Topology-Optimized 3D-Printed Concrete Bridge

et al. 2022

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In the last few years, the development of 3D concrete printing (3DCP) technology has flourished exponentially both in academics and the construction industry. Many problems inherent to 3DCP are already being tackled on a material level. However, in the practical realization of large-scale components there are still a lot of questions to be answered. In this study, we discuss the production process of a topology-optimized 3D-printed concrete bridge structure. As the entire process is largely different compared to the manufacturing of traditional concrete structures, the problems, workarounds, and insights gathered from this project are valuable for future constructions using 3DCP. The geometry of the bridge was based on topology optimization results and further developed through the use of parametric modelling. After careful considerations, the bridge geometry was discretized into four segments and printed as integrated formwork. Several measures were taken during the printing process in order to produce the separate sections. The assembly process entailed the handling of the printed components, the placement of reinforcement and prestressing tendons, the production of the end blocks, and the handling and joining of the printed sections. For the latter, also the process of pouring self-compacting concrete in the printed formwork is discussed and more details about the post-tensioning procedure are provided.

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A parametric modelling strategy for the numerical simulation of 3D concrete printing with complex geometries

Cited by 25 publications

References 22 publications

Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

Energy Performance of 3D-Printed Concrete Walls: A Numerical Study

Scientometric Analysis and Systematic Review of Multi-Material Additive Manufacturing of Polymers

The Production of a Topology-Optimized 3D-Printed Concrete Bridge

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