TY - JOUR
TI - Energy evolution and distribution law of rock under thermal mechanical coupling
AU - Wang Dong
AU - Wang Xin-Zhong
AU - Zhang Guang-Ze
AU - Xu Zheng-Xuan
AU - Liu Zhi-Jun
AU - Feng Tao
AU - Zhang Ru
AU - Zhang Zhi-Long
AU - Feng Gan
AU - Ren Li
JN - Thermal Science
PY - 2022
VL - 26
IS - 2
SP - 1081
EP - 1088
PT - Article
AB - The characteristics of the energy evolution and distribution of rock during  deformation and failure were studied based on thermal mechanical coupling  tests completed by Min Ming at his Master’s thesis in 2019. Dissipated  energy is greater than elastic energy at the crack closure stage, while  elastic energy is dominant at the linear elastic stage. At the post-peak  failure stage, elastic energy is released rapidly before 800°C and released  slowly at 1000°C. A comprehensive evaluation index to examine the  influence of temperature on rock strength and deformation ability was  proposed from the perspective of elastic energy accumulation ability. The  negative effect of temperature on the strength of the rock sample is weaker  than that on the elastic modulus before 400°C. The negative effect of  temperature on the strength of the rock sample is stronger than that on the  elastic modulus after 600°C.