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Acta Mechanica Solida Sinica

, Volume 24, Issue 3, pp 195–208 | Cite as

A thermo-plastic/viscoplastic damage model for geomaterials

  • Hui Zhou
  • Dawei Hu
  • Fan Zhang
  • Jianfu Shao
Article

Abstract

A thermo-plastic/viscoplastic damage coupled model was formulated to describe the time independent and time dependent behaviors of geomaterials under temperature effect. The plastic strain was divided into instantaneous plastic strain and creep plastic strain. To take temperature effect into account, a temperature variable was introduced into the instantaneous and creep plastic behavior descriptions and damage characterization, and a linear thermal expansion law was used in constitutive equation formulation. According to the mechanical behavior of rock salt, a specific model was proposed based on the previous model and applied to Avery rock salt, in which the numerical results obtained from our model had a good agreement with the data from experiments.

Key words

thermo-plastic/viscoplastic damage coupled mechanical model geomaterial rock salt 

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Copyright information

© The Chinese Society of Theoretical and Applied Mechanics and Technology 2011

Authors and Affiliations

  1. 1.State Key Laboratory of Geomechanics and Geotechnical Engineering, Institute of Rock and Soil MechanicsChinese Academy of SciencesWuhanChina
  2. 2.LML, UMR 8107, CNRSUniversity of Lille IVilleneuve d’AscqFrance
  3. 3.School of Civil Engineering and ArchitectureHubei University of TechnologyWuhanChina

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