Weeger, Oliver ; Narasimha, Boddeti ; Yeung, Sai Kit ; Kaijima, Sawako ; Dunn, Martin L. (2021)
Digital Design and Nonlinear Simulation for Additive Manufacturing of Soft Lattice Structures.
In: Additive Manufacturing, 2019, 25
doi: 10.26083/tuprints-00019864
Artikel, Zweitveröffentlichung, Postprint
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Kurzbeschreibung (Abstract)
Lattice structures are frequently found in nature and engineering due to their myriad attractive properties, with applications ranging from molecular to architectural scales. Lattices have also become a key concept in additive manufacturing, which enables precise fabrication of complex lattices that would not be possible otherwise. While design and simulation tools for stiff lattices are common, here we present a digital design and nonlinear simulation approach for additive manufacturing of soft lattices structures subject to large deformations and instabilities, for which applications in soft robotics, healthcare, personal protection, energy absorption, fashion and design are rapidly emerging. Our framework enables design of soft lattices with curved members conforming to freeform geometries, and with variable, gradually changing member thickness and material, allowing the local control of stiffness. We model the lattice members as 3D curved rods and using a spline-based isogeometric method that allows the efficient simulation of nonlinear, large deformation behavior of these structures directly from the CAD geometries. Furthermore, we enhance the formulation with a new joint stiffening approach, which is based on parameters derived from the actual node geometries. Simulation results are verified against experiments with soft lattices realized by PolyJet multi-material polymer 3D printing, highlighting the potential for simulation-driven, digital design and application of non-uniform and curved soft lattice structures.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2021 |
| Autor(en): | Weeger, Oliver ; Narasimha, Boddeti ; Yeung, Sai Kit ; Kaijima, Sawako ; Dunn, Martin L. |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Digital Design and Nonlinear Simulation for Additive Manufacturing of Soft Lattice Structures |
| Sprache: | Englisch |
| Publikationsjahr: | 2021 |
| Publikationsdatum der Erstveröffentlichung: | 2019 |
| Verlag: | Elsevier |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Additive Manufacturing |
| Jahrgang/Volume einer Zeitschrift: | 25 |
| Kollation: | 26 Seiten |
| DOI: | 10.26083/tuprints-00019864 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/19864 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| Kurzbeschreibung (Abstract): | Lattice structures are frequently found in nature and engineering due to their myriad attractive properties, with applications ranging from molecular to architectural scales. Lattices have also become a key concept in additive manufacturing, which enables precise fabrication of complex lattices that would not be possible otherwise. While design and simulation tools for stiff lattices are common, here we present a digital design and nonlinear simulation approach for additive manufacturing of soft lattices structures subject to large deformations and instabilities, for which applications in soft robotics, healthcare, personal protection, energy absorption, fashion and design are rapidly emerging. Our framework enables design of soft lattices with curved members conforming to freeform geometries, and with variable, gradually changing member thickness and material, allowing the local control of stiffness. We model the lattice members as 3D curved rods and using a spline-based isogeometric method that allows the efficient simulation of nonlinear, large deformation behavior of these structures directly from the CAD geometries. Furthermore, we enhance the formulation with a new joint stiffening approach, which is based on parameters derived from the actual node geometries. Simulation results are verified against experiments with soft lattices realized by PolyJet multi-material polymer 3D printing, highlighting the potential for simulation-driven, digital design and application of non-uniform and curved soft lattice structures. |
| Status: | Postprint |
| URN: | urn:nbn:de:tuda-tuprints-198642 |
| Zusätzliche Informationen: | Lattices, Digital design, Multi-material 3D printing, Soft structures, Functionally graded structures, Nonlinear rods |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 600 Technik |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet Cyber-Physische Simulation (CPS) |
| Hinterlegungsdatum: | 15 Dez 2021 13:46 |
| Letzte Änderung: | 16 Dez 2021 06:47 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Digital Design and Nonlinear Simulation for Additive Manufacturing of Soft Lattice Structures. (deposited 15 Dez 2021 13:46) [Gegenwärtig angezeigt]
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