煤矿安全2019，Vol.50Issue(3)：49-52,4.DOI:10.13347/j.cnki.mkaq.2019.03.012
岩石循环加卸载作用下能量的演化规律
Evolution Laws of Dissipated Energy Under Rock Cyclic Loading and Unloading
詹可亮 1薛俊华 1刘之喜1
作者信息
- 1. 安徽理工大学 土木建筑学院,安徽 淮南 232001
- 折叠
摘要
Abstract
Based on cyclic loading and unloading tests, the size of hysteresis loop area is calculated by data processing software, and the correlation between hysteresis loop and cycle number is analyzed, and the fitting formula of cycle number and hysteresis loop is fitted by data processing. The relationship between dissipation energy, elastic energy and plastic property is analyzed by using the fitting formula. The position of hysteresis loop moves to the right with the increase of cycle times. The elastic energy dissipation energy of rock increases with the increase of cycle times after the first loading and unloading, and the plastic energy has no fixed tendency with the increase of cycles because the strength of rock is randomly distributed. The friction between recoverable cracks decreases gradually and the energy required by elastic strain decreases gradually with the increase of cycle times.关键词
分等级加卸载/滞回环/弹性能/耗散能/塑性能/岩石加载Key words
graded loading and unloading/hysteresis loop/elastic energy/dissipated energy/plastic energy/rock loading分类
矿业与冶金引用本文复制引用
詹可亮,薛俊华,刘之喜..岩石循环加卸载作用下能量的演化规律[J].煤矿安全,2019,50(3):49-52,4.
