TY - CONF
T1 - Cellular and topology optimization of beams under bending
T2 - 30th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2019
AU - Gopal, Arjun
AU - Parihar, Gaurav
AU - Holt, McKay
AU - Stinson, Tanner
AU - Sharma, Manasvi
AU - Bhate, Dhruv
N1 - Funding Information:
This work was conducted as part of a research project in the MFG 598: Design for Additive Manufacturing course offered in the Spring of 2019 at the Arizona State University. The authors wish to acknowledge support from the Maricopa County Industrial Development Authority (MCIDA) and the Fulton Schools of Engineering at Arizona State University, where these parts were fabricated and tested, as well as Altair Engineering and nTopology for providing access to their software that was used to generate the designs in this paper.
Publisher Copyright:
© Solid Freeform Fabrication 2019: Proceedings of the 30th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2019. All rights reserved.
PY - 2019
Y1 - 2019
N2 - Design for Additive Manufacturing (AM) includes concepts such as cellular materials and topology optimization that combine the capabilities of advanced computational design with those of AM technologies that can realize them. There is however, limited experimental study of the relative benefits of these different approaches to design. This paper examines these two different approaches, specifically in the context of maximizing the flexural rigidity of a beam under bending, while minimizing its mass. A total of 23 beams were designed using commercially available cellular design, and topology optimization software. The Selective Laser Sintering (SLS) process was used to manufacture these beams with Nylon 12, which were then tested per ASTM D790 three-point bend test standards. The effect of varying the size and shape of cells on the flexural rigidity was studied using 15 different cellular designs. These results were then compared to six different topology optimized beam designs, as well as three solid and hollow baseline beams. These preliminary findings suggest that topology optimized shapes underperform their cellular counterparts with regard to specific stiffness, and that stochastic cellular shapes deserve deeper study.
AB - Design for Additive Manufacturing (AM) includes concepts such as cellular materials and topology optimization that combine the capabilities of advanced computational design with those of AM technologies that can realize them. There is however, limited experimental study of the relative benefits of these different approaches to design. This paper examines these two different approaches, specifically in the context of maximizing the flexural rigidity of a beam under bending, while minimizing its mass. A total of 23 beams were designed using commercially available cellular design, and topology optimization software. The Selective Laser Sintering (SLS) process was used to manufacture these beams with Nylon 12, which were then tested per ASTM D790 three-point bend test standards. The effect of varying the size and shape of cells on the flexural rigidity was studied using 15 different cellular designs. These results were then compared to six different topology optimized beam designs, as well as three solid and hollow baseline beams. These preliminary findings suggest that topology optimized shapes underperform their cellular counterparts with regard to specific stiffness, and that stochastic cellular shapes deserve deeper study.
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M3 - Paper
AN - SCOPUS:85095968276
SP - 1877
EP - 1892
Y2 - 12 August 2019 through 14 August 2019
ER -