TY - GEN
T1 - Tsai-Wu analysis of a thin-walled 3D-printed polylactic acid (PLA) structural bracket
AU - Chen, Ruiqi
AU - Ramachandran, Ashwin
AU - Liu, Cheng
AU - Chang, Fu-Kuo
AU - Senesky, Debbie G.
N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].
PY - 2017
Y1 - 2017
N2 - In this paper, we discuss the process used to characterize and model thin-walled polylactic acid (PLA) structures manufactured using 3D-printing. PLA is a cheap, biodegradable plastic that can be used for structural applications on unmanned aircraft systems such as quad-rotors and remote controlled airplanes. Material characterization tests were performed and results are compared to existing bulk material data to come up with a set of transversely isotropic constitutive properties and a failure model based on the Tsai-Wu failure criterion. To verify the model, a simple truss-style bracket was analyzed using both a traditional isotropic material model as well as our anisotropic model. Analysis using the isotropic model showed an ultimate load of 75 pounds, while the anisotropic model showed an ultimate load of 55 pounds. The bracket was manufactured using a fused deposition modeling (FDM) 3D-printer and tested to failure. The bracket failed at 65 pounds, 18% greater than that predicted by the anisotropic model. The experimentally-measured strength-to-weight ratio of the bracket was 1522, showing the feasibility of using 3D-printing to manufacture lightweight, efficient structures. © 2017, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
AB - In this paper, we discuss the process used to characterize and model thin-walled polylactic acid (PLA) structures manufactured using 3D-printing. PLA is a cheap, biodegradable plastic that can be used for structural applications on unmanned aircraft systems such as quad-rotors and remote controlled airplanes. Material characterization tests were performed and results are compared to existing bulk material data to come up with a set of transversely isotropic constitutive properties and a failure model based on the Tsai-Wu failure criterion. To verify the model, a simple truss-style bracket was analyzed using both a traditional isotropic material model as well as our anisotropic model. Analysis using the isotropic model showed an ultimate load of 75 pounds, while the anisotropic model showed an ultimate load of 55 pounds. The bracket was manufactured using a fused deposition modeling (FDM) 3D-printer and tested to failure. The bracket failed at 65 pounds, 18% greater than that predicted by the anisotropic model. The experimentally-measured strength-to-weight ratio of the bracket was 1522, showing the feasibility of using 3D-printing to manufacture lightweight, efficient structures. © 2017, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.
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U2 - 10.2514/6.2017-0567
DO - 10.2514/6.2017-0567
M3 - RGC 32 - Refereed conference paper (with host publication)
SN - 9781624104534
T3 - 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2017
BT - 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2017
PB - American Institute of Aeronautics and Astronautics
T2 - 58th AIAA/ASCE/AHS/ASC Structures, Structural Dynamics, and Materials Conference, 2017
Y2 - 9 January 2017 through 13 January 2017
ER -
