Figure 1:

Figure 2:

Figure 3:

List of uncertain parameters adopted for calculations
| Parameter | Base value | Interval 5% | Interval 10% | Interval 15% | Interval 20% | ||||
| inf. 5% (−) | sup. 5% (+) | inf. 10% (-) | sup. 10% (+) | inf. 15% (-) | sup. 15% (+) | inf. 20% (-) | sup. 20% (+) | ||
| k(t), 1/mm | 0.000041 | 0.000039 | 0.000043 | 0.000037 | 0.000045 | 0.000035 | 0.000047 | 0.000033 | 0.000049 |
| 0.000124 | 0.000117 | 0.000130 | 0.000111 | 0.000136 | 0.000105 | 0.000142 | 0.000099 | 0.000148 | |
| 0.000106 | 0.000101 | 0.000111 | 0.000095 | 0.000117 | 0.000090 | 0.000122 | 0.000085 | 0.000127 | |
|
| 0.00652 | 0.00619 | 0.00685 | 0.00587 | 0.00717 | 0.00554 | 0.00750 | 0.00522 | 0.00782 |
| Es(t), GPa | 180 | 171 | 189 | 162 | 198 | 153 | 200* | 144 | 200* |
| φ(t), - | 2.5 | 2.375 | 2.625 | 2.25 | 2.75 | 2.125 | 2.875 | 2.00 | 3.00 |
