Page 373 - Control Theory in Biomedical Engineering
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Tunable stiffness using negative Poisson's ratio 339
Star, PVA
Base case 3 mm elongation 6 mm elongation
8
7
6
Load (N) 5 4 3
2
1
0
0 2 4 6 8 10
Vertical deflection (mm)
Star, TPU
Base case 3 mm elongation 6 mm elongation
10
8
6
Load (N) 4
2
0
0 2 4 6 8 10
–2
Vertical deflection (mm)
Star, Pythonflex
Base case 3 mm elongation 6 mm elongation
10
9
8
7
6
Load (N) 5 4
3
2
1
0
–1 0 2 4 6 8 10
Vertical deflection (mm)
Fig. 19 Test results for Star structures.
