Research on Damage Constitutive Model and Evolution Equation of Coal under Uniaxial Compression
Based on the CT real-time testing of coal microscopic damage propagation, the comparison of damage variable between CT scanning and Bellonoi equation, Lemaitre equation in the process of uniaxial damage spread was obtained which solves successfully damage discriminating scale problem, and the results is more reasonable than Bellonoi equation and Lemaitre equation. In order to describe logically its behaviors and evolution, its constitutive model and evolvement function under uniaxial compression were carried through separately in pre-linearity phase, start and development phase, speedup phase, which it is important to guide engineering.
CT testing damage constitutive model evolution equation
PI Wenli Dai Gaofei YIN Guangzhi
College of Resource and Environmental Sciences, Chongqing University, Chongqing 400044, China
国际会议
The 2007 International Symposium on Safety Science and Technology(2007采矿科学与安全技术国际学术会议)
河南焦作
英文
535-539
2007-04-17（万方平台首次上网日期，不代表论文的发表时间）