Research Article
Energy Analysis Method for Uniaxial Compression Test of Sandstone under Static and Quasi-Dynamic Loading Rates
Table 1
Energy evolution law of uniaxial incrementally loading-unloading tests.
| Load (kN) | Loading rates (mm/s) | 1.0 × 10−3(Specimen T1) | Elastic energy (J) | 1.0 × 10−2(Specimen T3) | 5.0 × 10−2(Specimen T4) | 1.0 × 10−1(Specimen T5) | Elastic energy (J) | Input energy (J) | Elastic energy (J) | Input energy (J) | Elastic energy (J) | Input energy (J) | Elastic energy (J) | Input energy (J) | Elastic energy (J) | Input energy (J) |
| 10 | 0.5336 | 1.3542 | 0.5283 | 1.2421 | 0.5347 | 1.2415 | 0.5432 | 1.2641 | 0.5406 | 1.2124 | 20 | 1.7882 | 3.0105 | 1.7981 | 2.9894 | 1.8063 | 3.2947 | 1.7941 | 3.0474 | 1.8023 | 2.8142 | 30 | 3.3095 | 6.3963 | 3.3124 | 6.2854 | 3.3009 | 6.0781 | 3.3376 | 5.7264 | 3.3100 | 5.2241 | 40 | 5.3120 | 10.0936 | 5.3214 | 9.5662 | 5.3421 | 9.2872 | 5.3845 | 9.0275 | 5.4011 | 8.4547 | 50 | 7.1032 | 14.6541 | 7.1842 | 14.0355 | 7.1891 | 13.4601 | 7.2064 | 13.0073 | 7.2219 | 12.4678 | 60 | 9.3945 | 19.1239 | 9.3867 | 18.5455 | 9.4167 | 17.8934 | 9.4054 | 17.0645 | 9.3972 | 16.1347 | 70 | — | — | — | — | 11.4427 | 22.5211 | 11.4210 | 21.8534 | 11.4348 | 20.3556 |
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