Table 2
Fitting coefficients obtained by applying equation (5) to the measured friction coefficients. These coefficients characterise the second-order polynomial curves used to approximate the measured friction coefficients.
| x 0 | x 1 | x 2 | x 12 | x 11 | x 22 | |
|---|---|---|---|---|---|---|
| μ s | 1.623 | −0.028 | −0.112 | −0.001 | 0.003 | −0.002 |
| μ d1 | 1.134 | −0.190 | −0.243 | 0.068 | −0.008 | −0.007 |
| μ d | 1.324 | −0.186 | −0.193 | 0.032 | 0.014 | 0.011 |
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