Article by Bhandari, Lopez-Anido Published in Journal of Additive Manufacturing
An article by graduate student Sunil Bhandari and Dr. Roberto Lopez-Anido will be published in the August 2018 edition (Volume 22) of the Journal of Additive Manufacturing, an Elsevier publication. The article is titled, “Finite element analysis of thermoplastic polymer extrusion 3D printed material for mechanical property prediction.” This article is based on the first part of Bhandari’s MS thesis work.
Bhandari recently received the Edward T. Bryand Graduate Research Award from the UMaine College of Engineering.
A space frame lattice and shell finite element model was created to predict the linearly elastic response of test coupons made with a modified polyetherimide (PEI) material. This approach was employed because it provides an efficient procedure to design and optimize 3D printed parts. The modeled coupons were 3D printed by extrusion of molten thermoplastic polymer. The finite element model was verified by comparing the predicted values of elastic modulus, shear modulus, and Poisson’s ratio in two material directions with the corresponding values obtained from quasi-static mechanical experiments. The values obtained for the moduli and the Poisson’s ratios from the finite element model matched closely with those obtained from the experiments.
Sunil Bhandari, Roberto Lopez-Anido, Finite element analysis of thermoplastic polymer extrusion 3D printed material for mechanical property prediction, Additive Manufacturing, Volume 22, August 2018, Pages 187-196, ISSN 2214-8604, https://doi.org/10.1016/j.addma.2018.05.009.