We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Secondary development and application of the NP-T creep model based on FLAC.
- Authors
Chen, Luwang; Li, Shengjie; Zhang, Kaixian; Liu, Yanxian
- Abstract
The Poynting-Thomson creep model is one of the classical combined creep models; however, it fails to demonstrate the plastic creep and the accelerated creep stage, which limit the popularization and the use of the model. The New Poynting-Thomson (NP-T) creep model is established to enhance the existing Poynting-Thomson creep model by the damage theory and the viscoplastic unit in this paper. On the basis of deducing its constitutive equation in three-dimensional finite difference form, The NP-T creep model is secondarily developed by using Visual C language and FLAC built-in FISH language. The results of a parameter inversion indicate the superiority of the NP-T creep model that can be applied in non-uniform stress field. After validating its accuracy by the FLAC software, the NP-T creep model is used in a numerical simulation to reflect that the roadway stability is gradually weakened with the increase of the surrounding soft rock thickness.
- Publication
Arabian Journal of Geosciences, 2017, Vol 10, Issue 23, p1
- ISSN
1866-7511
- Publication type
Article
- DOI
10.1007/s12517-017-3301-9