Structural behavior of ice composite for 3D printing

Arno D.C. Pronk, D. Jansen, Kamil Kara, J. Van Laar, Hendrikus Willems

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Abstract

In the past, record breaking large shell structures with ice composites were successfully realized by spraying cellulose-water mixture on an inflatable mould. This paper presents the application of a new, production technique for ice composites by extrusion instead of spraying. With this additive manufacturing technique, the world’s first gridshell in fibre-reinforced ice was designed, constructed, and tested. To increase the stiffness of the gridshell the floorplan of the inflatable mould was designed with an anti-clastic curvature at the supports of the structure. Concerning the pattern of the grid different options were developed and compared and verified in ABAQUS®. The size of the struts were determined by an iterative process. The gridshell was realized in a cold environment by printing multiple layers of cellulose-water mixture on the inflatable mould using piping bags. After the substance has been extruded, the mixture froze at temperatures of minus eight degrees Celsius or lower. The realized structure was tested on-site with a dead load to prove its strength.
Original languageEnglish
Title of host publicationProceedings of the IASS Annual Symposium 2019 – Structural Membranes 2019 Form and Force
EditorsC. Lázaro, K.-U. Bletzinger, E. Oñate
PublisherInternational Association for Shell and Spatial Structures (IASS)
Number of pages8
Publication statusPublished - 6 Oct 2019
EventIASS Annual Symposium 2019 – Structural Membrane 2019 - Barcelona, Spain
Duration: 7 Oct 201910 Oct 2019

Conference

ConferenceIASS Annual Symposium 2019 – Structural Membrane 2019
CountrySpain
CityBarcelona
Period7/10/1910/10/19

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