Switchable Stiffness Morphing Aerostructures using Granular Jamming - PowerPoint PPT Presentation

Mar 22, 2023 •389 likes •527 views

Switchable Stiffness Morphing Aerostructures using Granular Jamming David Brigido Stephen Burrow Benjamin Woods EPSRC ACCIS CDT conference 2019 2 From rigid to compliant Switchable-Stiffness David Brigido 2/8 3 From rigid to compliant

Switchable Stiffness Morphing Aerostructures using Granular Jamming David Brigido Stephen Burrow Benjamin Woods EPSRC ACCIS CDT conference 2019
2 From rigid to compliant Switchable-Stiffness David Brigido 2/8
3 From rigid to compliant Switchable-Stiffness David Brigido 2/8
4 Fish Bone Active Camber (FishBAC) [1] Video: B. Woods, University of Bristol [1] Benjamin Woods. FishBAC Demo. University of Bristol. https://www.youtube.com/watch?v=y-owNyXaClo Switchable-Stiffness David Brigido 3/8
5 Granular Jamming [2] Video: George Lesica [3] Image: D. Bi, Brandeis university • Solid-like: More contact among particles. • Liquid-like: Less contact among particles. [2] George Lesica. Granular material undergoing shear stress. https://www.youtube.com/watch?v=lp4EsXx9ldE [3] Dapeng Bi, Jie Zhang, et al. Jamming by shear. Nature, 480(7377):355 – 358, 2011. Switchable-Stiffness David Brigido 4/8
6 Switchable Stiffness FishBAC Switchable-Stiffness David Brigido 5/8
7 Switchable Stiffness FishBAC Switchable-Stiffness David Brigido 5/8
8 Flexural properties Vacuum at 0.85 bar. • Four-point Bending tests. Digital image correlation: • • Test frame machine. Full-field displacement. Vacuum at 0.5 bar. • • Video gauge system. Full-field strains. Switchable-Stiffness David Brigido 6/8
9 SwitchBAC Switchable-Stiffness David Brigido 7/8
10 SwitchBAC Switchable-Stiffness David Brigido 7/8
11 SwitchBAC Switchable-Stiffness David Brigido 7/8
12 Acknowledgements • This research was funded by the Engineering and Physical Sciences Research Council through the EPSRC Centre for Doctoral Training in Advanced Composites for Innovation and Science (grant number 1791399), • With further support provided by the European Research Council (ERC), as part of the Shape Adaptive Blades for Rotorcraft Efficiency ( SABRE ) programme (grant agreement No 723491). • Aero-ACCIS lab support, Conacyt (the National Council of Science and Technology), Marco Longana & ACCIS office. Switchable-Stiffness David Brigido 8/8
Questions? David.Brigido@bristol.ac.uk

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