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Table 7 Comparison of simulation and experimental results, grouped by slope and bump height

From: Manual wheelchair downhill stability: an analysis of factors affecting tip probability

Slope angle

Bump height

Sims correct

Sims incorrect

Discrepancies

Percentage correct

Simulations

Experiments

7.8°

1.3 cm

24

1

Rolled

Backwards tip

96.0

7.8°

1.9 cm

22

5

3x forward tip

2x backward tip

Rolled

Rolled

81.5

7.8°

3.2 cm

24

3

Stopped

Stopped

Backward tip

Backward tip

Forward tip

Forward tip

88.9

4.8°

1.3 cm

33

1

Stopped

Rolled

97.1

4.8°

1.9 cm

33

6

4x rolled

2x stopped

Stopped

Forward tip

84.6

4.8°

3.2 cm

32

5

3x stopped

Backward tip

Backward tip

Forward tip

Forward tip

Stopped

86.5

  1. For 189 trials, 88.9% of the simulations gave the same results as the experiment