Design and Characterisation of a 3D-Printed Pneumatic Rotary Actuator Exploiting Enhanced Elastic Properties of Auxetic Metamaterials
Abstract
:1. Introduction
2. Materials and Methods
2.1. Actuation Principle Based on Auxetic Metamaterials
- for 2D structures;
- for 3D structures with isotropic behaviour;
- for 3D structures with anisotropic behaviour.
2.2. Three-Dimensional Design and Additive Manufacturing
3. Experimental Tests and Results
3.1. Experimental Setup
3.2. Identification of the Mechanical Response of the Actuator
3.3. Isometric Tests
3.4. Isobaric Tests
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Conflicts of Interest
References
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Main 3D-Printing Parameters for Soft Pneumatic Actuator | |
---|---|
Material | TPU Ninjaflex 85A (Ninjatek®) |
3D Printer | Raise 3D Pro 2 |
Layer height | 0.15 mm |
Nozzle diameter | 0.4 mm |
Perimeter lines | 5 |
Infill density | 100% |
Infill pattern | Grid |
Support | Touch platform only |
Extrusion temperature | 220 °C |
Print speed | 15 mm/s |
Heated bed temperature | 0 °C |
Printing time | 16 h 48 min |
Main 3D-Printing Parameters for Rigid Frames | |
---|---|
Material | PLA (Raise3D®) |
3D Printer | Raise 3D Pro 2 |
Layer height | 0.1 mm |
Nozzle diameter | 0.6 mm |
Infill density | 15% |
Infill pattern | Grid |
Support | Touch platform only |
Extrusion temperature | 205 °C |
Print speed | 50 mm/s |
Heated bed temperature | 60 °C |
Printing time | 4 h 26 min |
Linear Fitting | |||
---|---|---|---|
Expansion | Compression | ||
0.932 | 0.898 |
Pressure [kPa] | Linear Fitting | |||
---|---|---|---|---|
Expansion | Compression | |||
0 | 1.49 | 0.010 | ||
50 | 1.07 | 0.013 | ||
100 | 0.32 | 0.007 | ||
150 | 2.13 | 0.051 | ||
200 | 0.97 | 0.027 |
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Donadio, F.F.; Dragone, D.; Procopio, A.; Amato, F.; Cosentino, C.; Merola, A. Design and Characterisation of a 3D-Printed Pneumatic Rotary Actuator Exploiting Enhanced Elastic Properties of Auxetic Metamaterials. Actuators 2024, 13, 329. https://doi.org/10.3390/act13090329
Donadio FF, Dragone D, Procopio A, Amato F, Cosentino C, Merola A. Design and Characterisation of a 3D-Printed Pneumatic Rotary Actuator Exploiting Enhanced Elastic Properties of Auxetic Metamaterials. Actuators. 2024; 13(9):329. https://doi.org/10.3390/act13090329
Chicago/Turabian StyleDonadio, Francesca Federica, Donatella Dragone, Anna Procopio, Francesco Amato, Carlo Cosentino, and Alessio Merola. 2024. "Design and Characterisation of a 3D-Printed Pneumatic Rotary Actuator Exploiting Enhanced Elastic Properties of Auxetic Metamaterials" Actuators 13, no. 9: 329. https://doi.org/10.3390/act13090329