Origami-inspired Mechanical Metamaterials
Notice bibliographique
Résumé
Folding paper into a repeated, tessellated, origami pattern can increase the paper’s strength. Using these origami patterns as inspiration for the design of structural engineering materials can similarly enhance the materials’ properties. There are multiple aspects of origami-inspired material designs that can affect their strength and performance, such as the chosen origami fold pattern, the dimensions of the pattern, and the material from which the pattern is fabricated. Common patterns that have previously been shown to have advantageous properties include Miura, Ron Resch, Kresling, and Yoshimura origami patterns.In this thesis, three novel origami fold patterns were designed, parameterized, and mechanically tested. The three patterns included a triangular-based pattern, a rectangular-based pattern, and a square-based pattern. The first study parameterized the geometries of the novel triangular and rectangular based origami, and proved the patterns had higher specific strength moduli than a previously tested Ron Resch pattern made from the same material. The rigid polylactic acid samples fractured during impact testing, leading to the second study which used a rubber-like material to fabricate flexible triangular, rectangular, and square-based origami sheets. These sheets were capable of absorbing loads from multiple impacts without fracturing and were more effective than unpatterned sheets at absorbing impact loads. The third study focused on analysing a two-level, full-factorial, parameterization for the triangular origami patterns. The results of this analysis defined how the overall shape and curvature of the origami sheet varied as the fold angle was changed. The fourth study combined flexible and rigid materials to create multi-material origami sheets comparing the triangular, square, and Miura origami patterns. The results showed that the triangular pattern had the highest compression strength, with the Miura pattern being next strongest. The final study creates heat activated shape memory origami tubes that would be ideal for use as space-saving actuators. Overall, three new origami-inspired patterns were created in this thesis: a triangular-based pattern, a rectangular-based pattern, and a square-based pattern. They were shown to have high strength-to-weight ratios and were effective at absorbing impact loads. Consequently, the materials designed in this thesis would be ideal for lightweight structures and protective equipment.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,001 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,001 | 0,001 |
| Méta-épidémiologie (sens large) | 0,002 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,001 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,051 | 0,001 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».