期刊
ENERGIES
卷 11, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/en11092349
关键词
salt rock; creep; damage; fractional derivative; acoustic emission
资金
- National Natural Science Foundation of China [51674266]
- State Key Research Development Program of China [2016YFC0600704]
- Yueqi Outstanding Scholar Program of CUMTB [2017A03]
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.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据