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Tsinghua University
The three dimensional (3D) printing technology has undergone rapid development in the last few years and it is now possible to print engineering structures. This paper presents a study of the mechanical behavior of 3D printed structures using cementitious powder. Microscopic observation reveals that the 3D printed products have a layered orthotropic microstructure, in which each layer consists of parallel strips. Compression and flexural tests were conducted to determine the mechanical properties and failure characteristics of such materials. The test results confirmed that the 3D printed structures are laminated with apparent orthotropy. Based on the experimental results, a stress–strain relationship and a failure criterion based on the maximum stress criterion for orthotropic materials are proposed for the structures of 3D printed material. Finally, a finite element analysis was conducted for a 3D printed shell structure, which shows that the printing direction has a significant influence on the load bearing capacity of the structure.
Peng Feng, Xinmiao Meng, J.F. Chen, Lieping Ye (2015). Mechanical properties of structures 3D printed with cementitious powders. Construction and Building Materials, 93, pp. 486-497, DOI: 10.1016/j.conbuildmat.2015.05.132.
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Type
Article
Year
2015
Authors
4
Datasets
0
Total Files
0
Language
English
Journal
Construction and Building Materials
DOI
10.1016/j.conbuildmat.2015.05.132
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