Modeling Coupled Flow-Stress-Damage during Creep Deformation

Abstract:

In order to reflect the tertiary rheological characteristics of hard rocks at the high stress states, a new nonlinear visco-elastic-plastic model is proposed on the basis of linear visco-elastic-plastic model and nonlinear visco-elastic-plasticity. And then the corresponding constitutive model are deduced, which can be used for describing rocks’ long-term strength characteristics and their creep deformational behavior and time-dependent damage under interaction of coupled seepage-stress field in rock engineering. At last, considering the time effect of rock damage in the process of tertiary creep, a coupled seepage -stress creep damage model for investigating the whole creep deformation behavior, including tertiary creep failure process is established, and the related equations governing the evolution of stress, creep damage and rock permeability along with the creep deformation of rock is introduced.

• Periodical: Applied Mechanics and Materials (Volumes 204-208)
• Pages: 3294-3298
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.204-208.3294
• Online since: October 2012
• Authors: Ru Bin Wang, Wei Ya Xu, Jiu Chang Zhang
• Keywords: Creep Damage, Creep Test, Flow-Stress-Damage Model, Rock Mechanics, Rock Permeability

References

[1] Daoping Lai, Robert Liang and M. ASCE: Journal of engineering mechanics ASCE Vol. 134 (2008), p.218.

[2] Stephansson Ove: Hydrogeology Journal Vol. 11 (2003), p.5.

[3] M Biot: Journal of applied physics Vol. 12 (1941), p.158.

[4] Louis C.. Rock Hydraulics. in: Rock Mechanics. Muller Leds. (1974).

[5] Noorishad J., Ayatollahi M. S. and Witherspoon P. A.: Int J. Rock Mech Min Sci & Geomech Abstr.. Vol. 19 (1982), p.1985.

[6] Oda M. :Geotechnique Vol. 35 (1985), p.486.

[7] Zhende Zhu, Aijun Zhang, and Xu Weiya: Rock and Soil Mechanics Vol. 23 (2002), p.557. (In Chinese)

[8] B Berkowitz: Adv Water Resource Vol. 25 (2002), p.865.

[9] G Cammarata, C Fidelibus, M Cravero, et al: Rock Mech Rock Eng, Vol. 40 (2007), p.41.

[10] Hunaling Wang, Weiya Xu, Shengqi Yang: Rock and Soil Mechanics Vol. 27 (2006), p.1703. (In Chinese)

[11] Weiya Xu, Rubin Wang, Wei Wang, et al: J. Cent. South Univ. Vol. 19 (2012), p.252.

[12] T.H. Yang, J. Liu, W.C. Zhu, et al: International Journal of Rock Mechanics & Mining Sciences Vol. 44 (2007), p.87.

[13] C.A. Tang, L.G. Tham, P.K.K. Lee, et al: International Journal of Rock Mechanics & Mining Sciences Vol. 39 (2002), p.477.

[14] Yang T H, Liu J, Zhu W C, et al: International Journal of Rock Mechanics & Mining Sciences Vol. 44 (2007), p.87.

[15] Tianhong Yang, Tiao Xu, Jianxin Liu et al: Chinese Journal of Rock Mechanics and Engineering Vol. 24(2005), p.2900. (In Chinese)