Elastic buckling and plastic collapse during 3D concrete printing
| Autor: | Akke S.J. Suiker, Rjm Rob Wolfs, Theo A.M. Salet, Sandra M. Lucas |
|---|---|
| Přispěvatelé: | Applied Mechanics and Design, Concrete Structures, 3D Concrete Printing, EAISI High Tech Systems |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
business.industry Additive manufacturing Structural failure 0211 other engineering and technologies 3D printing Parametric 3D printing model 02 engineering and technology Building and Construction Structural engineering 021001 nanoscience & nanotechnology Process conditions Buckling 021105 building & construction Parametric model General Materials Science 0210 nano-technology business 3D printing experiments Optimization of 3D printing process Parametric statistics |
| Zdroj: | Cement and Concrete Research, 135:106016. Elsevier |
| ISSN: | 0008-8846 |
| Popis: | This contribution studies failure by elastic buckling and plastic collapse during 3D concrete printing of wall structures. Four types of experiments were performed, which demonstrate the circumstances under which elastic buckling and plastic collapse occur, the effect of geometrical imperfections on the buckling response, the influence by the curing rate of the concrete material on the buckling stability, and the conditions leading to the successful printing of a complex, practical structure (a picnic table). The experimental results are compared to those computed by the parametric 3D printing model recently developed by Suiker (Int. J. Mech Sci, 137: 145–170, 2018), showing a very good agreement. The design formulas and design graphs deduced from the parametric model serve as a useful tool for accurately designing wall structures against failure during 3D concrete printing. Furthermore, they may be applied to optimize the process conditions during 3D printing, by providing the maximal printing velocity, the optimal geometrical characteristics, or the minimal amount of material required for adequately printing the structure. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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