期刊
CEMENT AND CONCRETE RESEARCH
卷 138, 期 -, 页码 -出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.cemconres.2020.106256
关键词
3D concrete printing; Computational fluid dynamics; Layer geometry; Parametric study; Rheology
资金
- Innovation Fund Denmark [8055-00030B]
- COWIfonden
- Danish Council for Independent Research (DFF)\Technology and Production Sciences (FTP) [7017-00128]
This paper presents a computational fluid dynamic model of 3D Concrete Printing. The numerical simulation is used to predict the cross-sectional shape of 3D printed segments through virtual printing simulations. An experimental parametric study of the layer geometry is also conducted for a wide range of processing printing speeds and nozzle heights. The constitutive behavior of the cement-based mortar used in experiments is characterized by rotational and oscillatory rheological tests, and it is modelled with a Bingham constitutive law. Moreover, two formulations of the constitutive law are used in the simulations: the generalized Newtonian fluid model, and the elasto-visco-plastic fluid. Overall, the numerical results agree well with the experiments, validating the proposed computational fluid dynamics modelling approach. Finally, an example of multi-layer print simulations as well as research prospects are presented.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据