Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/84397
Title: Quantifying mechanical properties of material extrusion fabricated lattice structures based on semi-rigid joint frame formulation
Authors: Park, Sang-In
Rosen, David W.
Keywords: Material extrusion additive manufacturing
Semi-rigid joint frame
Issue Date: 2016
Source: Park, S.-I., & Rosen, D. W. (2016). Quantifying mechanical properties of material extrusion fabricated lattice structures based on semi-rigid joint frame formulation. Proceedings of the 2nd International Conference on Progress in Additive Manufacturing (Pro-AM 2016), 222-227.
Abstract: This paper presents a new numerical modeling scheme based on the semi-rigid joint frame element formulation for lattice structures fabricated using material extrusion. The proposed scheme has two main elements. First, a modified semi-rigid joint frame element is formulated in order to model struts in lattice structures. Second, a voxel model is developed by simulating the material deposition process; the resulting model geometry is similar to that of the fabricated part. Using this model, effective structural parameters, such as effective strut and joint size and effective joint stiffness, can be computed. Parametric studies were conducted to examine manufacturing effects on the structural parameters. Estimated mechanical properties utilizing the proposed modeling approach are compared with tensile test results for three types of lattice structures. Results demonstrate good predictive capability of the proposed modeling approach.
URI: https://hdl.handle.net/10356/84397
http://hdl.handle.net/10220/41762
Rights: © 2016 by Pro-AM 2016 Organizers. Published by Research Publishing, Singapore
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:Pro-AM Conference Papers

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