| Téléchargement | - Voir la version finale : 3D printed octet plate-lattices for tunable energy absorption (PDF, 3.8 Mio)
- Voir les données supplémentaires : 3D printed octet plate-lattices for tunable energy absorption (DOCX, 2.8 Mio)
|
|---|
| DOI | Trouver le DOI : https://doi.org/10.1016/j.matdes.2023.111835 |
|---|
| Auteur | Rechercher : Nam, Ryan; Rechercher : Jakubinek, Michael1; Rechercher : Niknam, Hamed2; Rechercher : Rahmat, Meysam2; Rechercher : Ashrafi, Behnam2; Rechercher : Naguib, Hani E. |
|---|
| Affiliation | - Conseil national de recherches du Canada. Technologies de sécurité et de rupture
- Conseil national de recherches du Canada. Aérospatiale
|
|---|
| Format | Texte, Article |
|---|
| Sujet | energy absorption; additive manufacturing; lattice structures; finite element analysis |
|---|
| Résumé | Tunable energy absorption achieved through grading of lattice structures shows high potential to be used in lightweight cellular cores for energy absorbing structures. This study investigates structurally graded and multi-material lattices consisting of plate-based octet unit cells, under quasi-static compression, to assess their energy absorption ability. Variations in the structure and material compositions of the plate-lattice structures are achieved through changing the plate thickness and through changing the filament material along the lattice in the direction of applied compressive force. The compressive stress–strain behavior reveals a near 10% increase of specific energy absorption (SEA) in the plate thickness graded designs at higher strain compared to the baseline octet lattices. The multi-material arrangements significantly modified onset location of the structure collapse. Finite element models of the structures were developed, and good agreements with experimental results were observed. Effects of varying each of the unit cell geometric parameters were analyzed, and the high sensitivity to the plate inclination angle, which resulted in greater changes to the maximum stress values and control of the overall SEA, was identified. The results demonstrate the capacity to adapt the octet lattice structure design through additive manufacturing to better suit the expected load and application. |
|---|
| Date de publication | 2023-03-27 |
|---|
| Maison d’édition | Elsevier |
|---|
| Licence | |
|---|
| Dans | |
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Identificateur | S0264127523002502 |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 07aee881-9535-444e-985e-67a3c76bd0fb |
|---|
| Enregistrement créé | 2024-01-24 |
|---|
| Enregistrement modifié | 2024-01-24 |
|---|
