Rossiter_Johnson_Bingham_Lupin_AcceptedVersion.pdf (999.5 kB)
Assessing the design and compressive performance of material extruded lattice structures
journal contribution
posted on 2020-01-09, 10:17 authored by Jay Rossiter, Andrew JohnsonAndrew Johnson, Guy BinghamWith additive manufacturing increasingly being embraced in the area of sports technology, focus has shifted toward cellular structures for impact protection. Periodic lattice structures can be tailored for a specific response by modifying the geometry of individual cells, with the structure capable of being modified to conform around a given body. However, the effect of modifying specific design characteristics within a lattice and the interrelationships between them are not well understood. This study examines five geometric design variables: cell width, strut cross-sectional area (CSA), strut shape, cell orientation, and joint filleting, and their effect on the compressive behavior of a lattice structure. Truncated octahedron lattices were manufactured using nylon through the process of material extrusion and tested under compression at a constant strain rate of 1.0 s−1. Design of experiments was utilized to analyze the results by implementing a 2(5-1) factorial design. Results indicated that the strut CSA, cell width, and interaction between the two design characteristics had the largest effects on the plateau stress of the lattice and its energy capacity.
History
School
- Design
Published in
3D Printing and Additive ManufacturingVolume
7Issue
1Pages
19 - 27Publisher
Mary Ann LiebertVersion
- AM (Accepted Manuscript)
Rights holder
© Mary Ann Liebert, Inc., publishersPublisher statement
Final publication is available from Mary Ann Liebert, Inc., publishers http://doi.org/10.1089/3dp.2019.0030.Acceptance date
2019-12-30Publication date
2020-02-13Copyright date
2020ISSN
2329-7662eISSN
2329-7670Publisher version
Language
- en
Depositor
Dr Andrew Johnson. Deposit date: 7 January 2020Usage metrics
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