Numerical Model Describing the Early Age Behavior of 3D Printed Concrete – Work in Progress

Sebastian Andersen*, Wilson Ricardo Leal da Silva, Ieva Paegle, Jens Henrik Nielsen

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

Abstract

A numerical model used to predict the behavior of 3D printed concrete in the early age phase up until the point of collapse is presented. An incremental creep model for the material including aging and temperature effects is suggested. Furthermore, kinematic nonlinear effects are included in order to predict instability. The input parameters to the numerical model are determined through an optimization process where the displacement error between a finite element method (FEM) model and digital image correlation (DIC) measurements from an actual 3D print are minimized. A simplified (current state) version of the suggested numerical model was used to predict at how many layers a specific 3D print collapsed, with an error of 58%. This was concluded to be expected, since the numerical model is not fully implemented yet.
Original languageEnglish
Title of host publicationSecond RILEM International Conference on Concrete and Digital Fabrication : Digital Concrete 2020
Volume28
PublisherSpringer
Publication date2020
Pages175-184
DOIs
Publication statusPublished - 2020
Event2nd RILEM International Conference on Concrete and Digital Fabrication: Digital Concrete 2020 - Online
Duration: 6 Jul 20208 Jul 2020
Conference number: 2

Conference

Conference2nd RILEM International Conference on Concrete and Digital Fabrication
Number2
LocationOnline
Period06/07/202008/07/2020
SeriesRILEM Bookseries
Volume28
ISSN2211-0844

Keywords

  • 3D concrete print
  • Creep
  • Digital image correlation
  • Finite element method
  • Optimization loop

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