Volume 42 Issue 6
Jun.  2021
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SONG Yanqi, LI Xiaolong, MA Hongfa, FU Hang. Research on the Whole Creep Process of the Generalized Kelvin Model Based on Damaged Body Elements[J]. Applied Mathematics and Mechanics, 2021, 42(6): 637-644. doi: 10.21656/1000-0887.410255
Citation: SONG Yanqi, LI Xiaolong, MA Hongfa, FU Hang. Research on the Whole Creep Process of the Generalized Kelvin Model Based on Damaged Body Elements[J]. Applied Mathematics and Mechanics, 2021, 42(6): 637-644. doi: 10.21656/1000-0887.410255

Research on the Whole Creep Process of the Generalized Kelvin Model Based on Damaged Body Elements

doi: 10.21656/1000-0887.410255
  • Received Date: 2020-09-07
  • Rev Recd Date: 2020-11-20
  • The creep properties of rocks often have important control effects on the stability of tunnels and underground works. According to the stage characteristics of rock creep, the whole process of rock creep can be divided into 4 stages. The generalized Kelvin model can better reflect the rock creep characteristics of the 1st 3 stages, but cannot ideally reflect the characteristics of the accelerated creep stage. Through introduction of damaged body elements and Kachanov’s damage factor evolution formula, a generalized Kelvin model with damaged body elements was constructed, thereby a creep model was established to reflect the whole process of rock creep, and a relatively simple combined model parameter calculation method was proposed. The model well describes the whole process of rock creep, and the model parameters are easy to determine. The model works well in fitting and analysis of the experimental curves of sandy mudstone uniaxial compression creep, and the research results provides a reference for similar projects.
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