zolfagharian-4dprintingself-2019.pdf (5.6 MB)
4D printing self-morphing structures
journal contribution
posted on 2019-01-01, 00:00 authored by Mahdi Bodaghi, Reza Noroozi, Ali ZolfagharianAli Zolfagharian, Mohamad Fotouhi, Saeed NorouziThe main objective of this paper is to introduce complex structures with self-bending/morphing/rolling features fabricated by 4D printing technology, and replicate their thermo-mechanical behaviors using a simple computational tool. Fused deposition modeling (FDM) is implemented to fabricate adaptive composite structures with performance-driven functionality built directly into materials. Structural primitives with self-bending 1D-to-2D features are first developed by functionally graded 4D printing. They are then employed as actuation elements to design complex structures that show 2D-to-3D shape-shifting by self-bending/morphing. The effects of printing speed on the self-bending/morphing characteristics are investigated in detail. Thermo-mechanical behaviors of the 4D-printed structures are simulated by introducing a straightforward method into the commercial finite element (FE) software package of Abaqus that is much simpler than writing a user-defined material subroutine or an in-house FE code. The high accuracy of the proposed method is verified by a comparison study with experiments and numerical results obtained from an in-house FE solution. Finally, the developed digital tool is implemented to engineer several practical self-morphing/rolling structures.
History
Journal
MaterialsVolume
12Issue
8Article number
1353Publisher
MDPILocation
Basel, SwitzerlandPublisher DOI
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ISSN
1996-1944Language
engPublication classification
C1 Refereed article in a scholarly journalCopyright notice
2019, The AuthorsUsage metrics
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4D printingFEMexperimentsself-morphingshape memory polymerScience & TechnologyPhysical SciencesTechnologyChemistry, PhysicalMaterials Science, MultidisciplinaryMetallurgy & Metallurgical EngineeringPhysics, AppliedPhysics, Condensed MatterChemistryMaterials SciencePhysicsMECHANICAL-PROPERTIESMETAMATERIALSCOMPONENTS
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