Eye Model and Its Application - Computational Biomechanics of the Musculoskeletal System - page 277

The matched simulation results are shown in Figure 21.7. The comparison of the results includes
the peak stress, peak strain, and peak deflection of the two models. Significant positive correlation
was found with the Pearson correlation test (R = 0.982 for peak stresses, R = 0.983 for peak strains,
and R = 0.996 for peak deflections). It indicates that the current eye model has the capability to pre-
dict dynamic responses to different impact loads. Table 21.3 lists the comparison of results between
the current and VT-WFU eye models.

30. 715
27. 302
23. 888
20. 477
17. 064
13. 651
10. 238
6. 8255
0

30. 715
27. 302
23. 889
20. 477
17. 064
13. 651
10. 238
6. 8255
0

a1 a2

3. 4128 3. 4128

7.4222
6.5975
5.7728
4.9481
4.1235
3.2988
2.4741
1.6494
0.82469
0

7.4222
6.5975
5.7728
4.9481
4.1235
3.2988
2.4741
1.6494
0.82469
0

b1 b2

18. 91
16. 809
14. 708
12. 607
10. 506

c2

18. 91
16. 809
14. 708
12. 607
10. 506

c1

8. 4046

8. 4046

6. 3034

6. 3034

4. 2023

4. 2023

2. 1011
0

2. 1011
0

FIgure 21.7 (See color insert.) The distribution of max principal stress of the globe in the six matched
simulations: (a) stress distribution for low (left) and high (right) speed BB simulation; (b) stress distribution
for low (left) and high (right) speed foam simulation; and (c) stress distribution for low (left) and high (right)
speed baseball simulation.

table 21.3
Comparison of results between the Current and vt-wFu eye models in matched
Simulations

Peak Stress (mPa) Peak Strain Peak deflection (mm)

Simulations Current vt-wFu Current vt-wFu Current vt-wFu

S1 23.561 22.812 0.519 0.437 6.060 6.420

S2 31.734 32.757 0.702 0.732 7.836 7.790

SF1 3.091 3.180 0.007 0.009 1.126 1.300

SF2 7.109 7.830 0.182 0.250 2.891 2.670

SB1 22.081 22.153 0.261 0.309 — —

SB2 23.340 24.167 0.331 0.360 — —

Correlation R = 0.981 R = 0.977 R = 0.997