A comparison of modeling methods for predicting the elastic-plastic response of additively manufactured honeycomb structures

Raghav Sharma, Thao Le, Jiaxu Song, Ethaniel Harms, Daniel Sowa, Alex Grishin, Dhruv Bhate

Research output: Contribution to conferencePaper

Abstract

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.

Original languageEnglish (US)
Pages791-807
Number of pages17
StatePublished - 2020
Event29th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2018 - Austin, United States
Duration: Aug 13 2018Aug 15 2018

Conference

Conference29th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2018
CountryUnited States
CityAustin
Period8/13/188/15/18

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Surfaces and Interfaces

Fingerprint Dive into the research topics of 'A comparison of modeling methods for predicting the elastic-plastic response of additively manufactured honeycomb structures'. Together they form a unique fingerprint.

  • Cite this

    Sharma, R., Le, T., Song, J., Harms, E., Sowa, D., Grishin, A., & Bhate, D. (2020). A comparison of modeling methods for predicting the elastic-plastic response of additively manufactured honeycomb structures. 791-807. Paper presented at 29th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2018, Austin, United States.