TY - CONF
T1 - A comparison of modeling methods for predicting the elastic-plastic response of additively manufactured honeycomb structures
AU - Sharma, Raghav
AU - Le, Thao
AU - Song, Jiaxu
AU - Harms, Ethaniel
AU - Sowa, Daniel
AU - Grishin, Alex
AU - Bhate, Dhruv
N1 - Funding Information:
This effort was performed through the National Center for Defense Manufacturing and Machining under the America Makes Program entitled “A Non-Empirical Predictive Model for Additively Manufactured Lattice Structures” and is based on research sponsored by the Air Force Research Laboratory under agreement number FA8650-12-2-7230. The U.S. Government is authorized to reproduce and distribute reprints for Governmental purposes notwithstanding any copyright notation thereon.
Publisher Copyright:
© Solid Freeform Fabrication 2018: Proceedings of the 29th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2018. All Rights Reserved.
PY - 2020
Y1 - 2020
N2 - Valid and accurate models describing the mechanical behavior of additively manufactured cellular materials are crucial to enabling their implementation in critical-to-function parts. Broadly speaking, the modeling approaches commonly used in the literature fall into three categories. Each of these differs in the level of discretization at which the cellular behavior is modeled: at the level of each material point, at the level of the unit cell or at the level of a connecting member that constitutes a unit cell. Each of these three approaches relies on different characterization techniques and the way in which the resulting data is leveraged in the development of the model. In this work, we critically examine all three modeling approaches using FEA and compare their accuracy in the prediction of the elastic and plastic behavior of experimentally characterized hexagonal honeycomb structures made with Fused Deposition Modeling, and discuss the pros and cons of each method.
AB - Valid and accurate models describing the mechanical behavior of additively manufactured cellular materials are crucial to enabling their implementation in critical-to-function parts. Broadly speaking, the modeling approaches commonly used in the literature fall into three categories. Each of these differs in the level of discretization at which the cellular behavior is modeled: at the level of each material point, at the level of the unit cell or at the level of a connecting member that constitutes a unit cell. Each of these three approaches relies on different characterization techniques and the way in which the resulting data is leveraged in the development of the model. In this work, we critically examine all three modeling approaches using FEA and compare their accuracy in the prediction of the elastic and plastic behavior of experimentally characterized hexagonal honeycomb structures made with Fused Deposition Modeling, and discuss the pros and cons of each method.
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M3 - Paper
AN - SCOPUS:85084948560
SP - 791
EP - 807
T2 - 29th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2018
Y2 - 13 August 2018 through 15 August 2018
ER -