›› 2006, Vol. 27 ›› Issue (S1): 46-50.

• Fundamental Theroy and Experimental Research • Previous Articles     Next Articles

A rheology damage constitutive equation of rocks

WAN Ling 1, 2, PENG Xiang-he,1, 2, YANG Chun-he3, REN Zhong-jun1   

  1. 1. College of Resources and Environmental Science, Chongqing University, Chongqing 400044, China; 2. Key Lab. for the Exploitation of Southwest Resources & Environmental Disaster Control Engineering, Ministry of Education, Chongqing University, Chongqing 400044, China; 3. Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China
  • Received:2006-05-22 Published:2006-12-15

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Abstract: Based on the microstructure-mechanisms of rock materials and a simple mechanical model, a rheology damage constitutive equation is proposed by introducing generalized time defined in the space of irreversible strain and Newtonian time, and an anisotropic damage tensor of rank four. The anisotropic evolution and unilateral effect of damage as well as the effect of hydrostatic pressure can be taken into account in the proposed model. The corresponding numerical analysis is developed; and the creep, inelastic and damage behaviors of claystone are analyzed. It shows that the calculated results agree well with the experimental observation. The influence of stress level on the creep can be well described with the model.

Key words: rock, rheology, damage, constitutive equation

CLC Number: 

  • TU452
  • Please send e-mail to pingzhou3@126.com if you would like to read full paper in English for free. Parts of our published papers have English translations.
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