3D-Printed Metamaterial 

Company: HP Labs (2019)
Team: Jiwon Jun (HP), Alexa Siu (PhD, Stanford University)
My Role: Project Lead, 3D Design & Modeling
Demo: Symposium of Computational Fabrication 2019 (Abstract)
Article: Innovation Journal (Issue 11: Winter 2018) magazine.

Abstract
Stretchable and reconfigurable metamaterials have recently attracted a lot of attention. These materials can be engineered to exploit motion, deformation, and mechanical energy to achieve particular physical behaviors. Although several of these concepts have been explored through simulations in idealized systems, 3D-printing the metamaterial structures is still a challenge due to its complex geometry and difficulties in achieving desired mechanical properties of the parts by controlling various factors in the printing process (e.g. material and print orientation). In this work we focus on fabricating these structures at a macro level specifically using HP’s Multi Jet Fusion (MJF) 4200 printer with Nylon PA12 material. We describe the process in translating the proposed patterns for successful realization into 3D printed parts.


This is a flexible 3D-printed PA12 part inspired by Miura-Ori fold, which was designed as part of the exploration. Due to its geometry and thin walls, it is partially compressible and stretchable by hand. It was demonstrated with other 3D-printed parts at the Symposium of Computational Fabrication 2019 (Abstract: “An Exploration of 3D-Printed Metamaterial Structures” (J. W. Jun, A. F. Siu. 2019)

Design


Media
The 3D-printed Miura-Ori part was featured on Innovation Journal (Issue 11: Winter 2018) magazine.