Mechanical characteristics of graded origami bellows under axial tension

• Published in: Frontiers in physics Vol. 11
• Main Authors: Zhang, Xinyi, Lu, Guoxing, Wang, Shenghai, Durandet, Yvonne
• Format: Journal Article
• Language: English
• Published: Frontiers Media S.A 13.12.2023
• Subjects: axial tension; dynamic behavior; energy absorption; graded origami bellows; non-rigid deployment; quasi-static behavior
• ISSN: 2296-424X; 2296-424X
• DOI: 10.3389/fphy.2023.1304426

In this study, the mechanical characteristics of the graded origami bellows were numerically investigated and experimentally validated. Two graded geometric parameters were considered: pre-folding angle ( θ ) and layer height ( L e ). The sensitivities of the deployment process and energy absorption efficiency of origami bellows to variations in θ and L e under quasi-static loading and dynamic loading were numerically investigated. Results show that the origami bellows with positive gradients exhibited progressive deployment process. More than one deformation mechanism was triggered during deployment, indicating a mixed non-rigid deployment mode. A large gradient of θ had a notable effect on the energy absorption efficiency. Both specific energy absorption ( SEA ) and mean tensile force ( P m ) decreased as the gradient of θ increased. Although the gradient of L e was insensitive to the force response, the SEA decreased as the gradient of L e increased. The dynamic behavior of the graded models indicated that both the initial peak force and SEA were affected by the graded parameters. In general, the proposed graded origami bellows show a controllable deployment process and a stable force response under axial tension.