Figure 1
Figure 2
Figure 3
Values of fatigue characteristics of wood (Ry)_
| Image of the stressful element state | Special symbols used | Value of the calculated resistance fatigue for first-grade wood, MPa |
|---|---|---|
| Bending along the fibres | Rу | 12.00 |
| Compression along fibres | Rусо | 12.00 |
Comparison of the experimental and calculated values of the endurance factor_
| No. | Determination method | Endurance factor at | |
|---|---|---|---|
| ρ = 0.20 | ρ = 0.25 | ||
| 1 | Experimental | 0.459 | 0.470 |
| 2 | Calculated | 0.451 | 0.475 |
| 3 | Error, % | -1.77 | +1.05 |