Design of graded lattice structure with optimized mesostructures for additive manufacturing

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Design of graded lattice structure with optimized mesostructures for additive manufacturing
Title:
Design of graded lattice structure with optimized mesostructures for additive manufacturing
Journal Title:
Materials & Design
Publication Date:
11 January 2018
Citation:
Yiqiang Wang, Lei Zhang, Stephen Daynes, Hongying Zhang, Stefanie Feih, Michael Yu Wang, Design of graded lattice structure with optimized mesostructures for additive manufacturing, Materials & Design, Volume 142, 2018, Pages 114-123, ISSN 0264-1275, https://doi.org/10.1016/j.matdes.2018.01.011.
Abstract:
Additive manufacturing (AM) enables fabrication of multiscale cellular structures as a whole part, whose features can span several dimensional scales. Both the configurations and layout pattern of the cellular lattices have great impact on the overall performance of the lattice structure. In this paper, we propose a novel design method to optimize cellular lattice structures to be fabricated by AM. The method enables an optimized load-bearing solution through optimization of geometries of global structures and downscale mesostructures, as well as global distributions of spatially-varying graded mesostructures. A shape metamorphosis technology is incorporated to construct the graded mesostructures with essential interconnections. Experimental testing is undertaken to verify the superior stiffness properties of the optimized graded lattice structure compared to the baseline design with uniform mesostructures.
License type:
http://creativecommons.org/licenses/by-nc-nd/4.0/
Funding Info:
Agency for the Science Technology and Research and the Science and Engineering Research Council of Singapore through the Additive Manufacturing Centre Initiative (SERC Grant no. 142 68 00088)
Description:
ISSN:
0264-1275
0261-3069
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