| Title | The Creep-Damage Model of Salt Rock Based on Fractional Derivative |
| Authors | Zhou, Hongwei Liu, Di Lei, Gang Xue, Dongjie Zhao, Yang |
| Affiliation | China Univ Min & Technol, State Key Lab Coal Resources & Safe Min, Beijing 100083, Peoples R China. Peking Univ, Coll Engn, Beijing 100871, Peoples R China. |
| Keywords | salt rock creep damage fractional derivative acoustic emission BEHAVIOR |
| Issue Date | 2018 |
| Publisher | ENERGIES |
| Citation | ENERGIES. 2018, 11(9). |
| Abstract | The use of salt rock for underground radioactive waste disposal facilities requires a comprehensive analysis of the creep-damage process in salt rock. A computer-controlled creep setup was employed to carry out a creep test of salt rock that lasted as long as 359 days under a constant uniaxial stress. The acoustic emission (AE) space-time evolution and energy-releasing characteristics during the creep test were studied in the meantime. A new creep-damage model is proposed on the basis of a fractional derivative by combining the AE statistical regularity. It indicates that the AE data in the non-decay creep process of salt rock can be divided into three stages. Furthermore, the authors propose a new creep-damage model of salt rock based on a fractional derivative. The parameters in the model were determined by the Quasi-Newton method. The fitting analysis suggests that the new creep-damage model provides a precise description of full creep regions in salt rock. |
| URI | http://hdl.handle.net/20.500.11897/568493 |
| ISSN | 1996-1073 |
| DOI | 10.3390/en11092349 |
| Indexed | SCI(E) |
| Appears in Collections: | 工学院 |
