Constitutive Behavior of Salt Rock Coupled of Creep Deformation and Damage Development
Making use of internal variables and a proper generalized time scale to describe the irreversible deformation history of salt rock, a constitutive model coupled of creep deformation and damage development of salt rock is formulated. A creep correlated function is defined to describe the effect of loading time on creep deformation of salt rock, and a fourth order damage tensor is introduced to formulate the anisotropic development of material damage. The creep experiments of salt rock under triaxial compression are simulated by the proposed constitutive model. The good agreement between the calculated and experimental results shows the proposed constitutive model can well describe the creep behavior of salt rock.
Huawu Liu, Yongxin Yang, Shijie Shen, Zhili Zhong, Laijiu Zheng and Peng Feng
Z. J. Ren, "Constitutive Behavior of Salt Rock Coupled of Creep Deformation and Damage Development", Applied Mechanics and Materials, Vols. 268-270, pp. 712-716, 2013