{"id":28711,"date":"2016-05-10T15:00:43","date_gmt":"2016-05-10T15:00:43","guid":{"rendered":"https:\/\/www.padtinc.com\/2016\/05\/10\/padt-and-asu-collaborate-on-3d-printed-lattice-research\/"},"modified":"2022-04-01T17:22:27","modified_gmt":"2022-04-02T00:22:27","slug":"padt-and-asu-collaborate-on-3d-printed-lattice-research","status":"publish","type":"post","link":"https:\/\/www.padtinc.com\/2016\/05\/10\/padt-and-asu-collaborate-on-3d-printed-lattice-research\/","title":{"rendered":"PADT and ASU Collaborate on 3D Printed Lattice Research"},"content":{"rendered":"
\"The <\/picture>
ASU student\u00a0team <\/strong>(left to right): Drew Gibson, Jacob Gerbasi, John Reeher, Matthew Finfrock, Deep Patel and Joseph Van Soest<\/figcaption><\/figure>\n

Over the past two academic semesters (2015\/16), I had the opportunity to work closely with six senior-year undergraduate engineering students from the Arizona State University (ASU), as their industry adviser on an\u00a0eProject<\/a>\u00a0(similar to a Capstone or Senior Design project).\u00a0The area we wanted to explore with the students was in 3D printed lattice structures, and more specifically, address the material modeling\u00a0aspects of these structures. PADT provided access to our\u00a03D printing equipment and materials, ASU to their mechanical testing and characterization facilities and we both used ANSYS for simulation, as well as a weekly meeting with\u00a0a whiteboard to discuss our ideas.<\/p>\n

While there are several\u00a0efforts ongoing in developing design and\u00a0optimization software for lattice structures,\u00a0there has been little progress in developing a\u00a0robust, validated material model that\u00a0accurately describes how these structures\u00a0behave – this is what our eProject set out to do. The complex\u00a0internal meso- and microstructure of these\u00a0structures makes them particularly sensitive to\u00a0process variables such as build orientation,\u00a0layer thickness, deposition or fusion width\u00a0etc., none of which are accounted for in\u00a0models for lattice structures available today. As a result,\u00a0the use of published\u00a0values for bulk materials are not accurately\u00a0predictive of true lattice structure behavior.<\/p>\n

In this work, we combined analytical, experimental and numerical techniques to extract and validate material parameters that describe mechanical response of lattice structures. We demonstrated our approach on regular honeycomb structures of ULTEM-9085 material, made with the Fused Deposition Modeling (FDM) process. Our results showed that we were able to predict low strain responses within 5-10% error, compared to 40-60% error with the use of bulk properties.<\/p>\n

This work is to be presented in full at the upcoming RAPID conference on May 18, 2016 (details at this link<\/a>) and has also been accepted for full length paper submission to the SFF Symposium<\/a>. We are also submitting\u00a0a research proposal that builds on this work and extends it into more complex geometries, metals and failure modeling. If you are\u00a0interested in the findings of this work and\/or would like to collaborate, please meet us at RAPID or send us an email (info@padtinc.com).<\/p>\n

\"Our <\/picture>
The\u00a0final poster summarizing our work rests atop\u00a0the Stratasys Fortus 400mc that we printed all our honeycomb structures\u00a0on<\/figcaption><\/figure>\n","protected":false},"excerpt":{"rendered":"

Over the past two academic semesters (2015\/16), I had the opportunity to work closely with six senior-year undergraduate engineering students […]<\/p>\n","protected":false},"author":33,"featured_media":28712,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[25,2323],"tags":[222,515,478,511,624,625,944,724,517,503,520],"post-podcast":[],"_links":{"self":[{"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/posts\/28711"}],"collection":[{"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/users\/33"}],"replies":[{"embeddable":true,"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/comments?post=28711"}],"version-history":[{"count":2,"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/posts\/28711\/revisions"}],"predecessor-version":[{"id":44076,"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/posts\/28711\/revisions\/44076"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/media\/28712"}],"wp:attachment":[{"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/media?parent=28711"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/categories?post=28711"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/tags?post=28711"},{"taxonomy":"post-podcast","embeddable":true,"href":"https:\/\/www.padtinc.com\/wp-json\/wp\/v2\/post-podcast?post=28711"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}