Table 7 Fitting equation of impact stress of multiple layers with different rammers
From: Research on mechanical characteristics and energy dissipation of traditional ramming technology
Rammer | Fitting equation | Correlation coefficient R2 | Area expression | Curve integral area (m2) |
|---|---|---|---|---|
No. 1 | y = 0.00573 + 0.39464e−x/14.3695 | 0.99151 | y = −5.696e(−x/14.3695) + 0.00573x + C1 | 0.22 |
No. 2 | y = −0.002 + 0.34425e−x/21.05343 | 0.99448 | y = −7.2476e(−x/21.0534)−0.002x + C2 | 0.19 |
No. 3 | y = 0. 001,534 + 0.8721e−x/11.83216 | 0.98771 | y = −10.3188e(−x/11.8322) + 0.001534x + C3 | 0.48 |
No. 4 | y = 0.00906 + 0.95481e−x/15.58366 | 0.9875 | y = −14.8794e(−x/15.5837) + 0.00906x + C4 | 0.54 |
No. 5 | y = −0.00309 + 0.83206e−x/16.28111 | 0.9896 | y = −13.5469e(−x/16.2811)−0.0031x + C5 | 0.46 |