TIME DEPENDENT DAMAGE MODEL OF ROCK UNDER DYNAMIC LOADING
Shan Renliang,Xue Yousong,Zhang Qian (Civil Engineering Department,China University of Mining and Technology, Beijing 100083 China)
The current studying status of dynamic constitutive model of rock is reviewed. Based on analysis of measured dynamic constitutive curves,and combining statistic damage model and viscoelastic model,a time dependent damage model of rock under dynamic loading is established. There is a good coherence between stress-strain curves calculated from the proposed model and that from experimental data directly.