SLIDE 1
From rigid to compliant
2
Switchable-Stiffness David Brigido 2/8
Switchable Stiffness Morphing Aerostructures using Granular Jamming - - PowerPoint PPT Presentation
Switchable Stiffness Morphing Aerostructures using Granular Jamming - - PowerPoint PPT Presentation
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
SLIDE 2
SLIDE 3
From rigid to compliant
3
Switchable-Stiffness David Brigido 2/8
SLIDE 4
Fish Bone Active Camber (FishBAC)
4
[1] Benjamin Woods. FishBAC Demo. University of Bristol. https://www.youtube.com/watch?v=y-owNyXaClo
Switchable-Stiffness David Brigido 3/8
[1] Video: B. Woods, University of Bristol
SLIDE 5
Granular Jamming
5
Switchable-Stiffness David Brigido 4/8
- 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. [2] Video: George Lesica [3] Image: D. Bi, Brandeis university
SLIDE 6
Switchable Stiffness FishBAC
6
Switchable-Stiffness David Brigido 5/8
SLIDE 7
Switchable Stiffness FishBAC
7
Switchable-Stiffness David Brigido 5/8
SLIDE 8
Flexural properties
8
Switchable-Stiffness David Brigido 6/8
- Four-point Bending tests.
- Test frame machine.
- Video gauge system.
Digital image correlation:
- Full-field displacement.
- Full-field strains.
Vacuum at 0.85 bar. Vacuum at 0.5 bar.
SLIDE 9
SwitchBAC
9
Switchable-Stiffness David Brigido 7/8
SLIDE 10
SwitchBAC
10
Switchable-Stiffness David Brigido 7/8
SLIDE 11
SwitchBAC
11
Switchable-Stiffness David Brigido 7/8
SLIDE 12
Acknowledgements
12
- 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
SLIDE 13