PREDICTION MODEL OF LOCALIZATION DEFORMATION OF ROCKS CONSIDERING THE THIRD DEVIATIORIC STRESS INVARIANT
LI Yunzhen1，2，HUANG Tao1，DAI Benlin3，CAI Chen1
(1. School of Environmental Science and Engineering，Southwest Jiaotong University，Chengdu，Sichuan 610031，China； 2. Department of Civil and Environment Engineering，Northwestern University，Evanston，IL 60208，USA； 3. College of Environmental Science and Engineering，Hohai University，Nanjing，Jiangsu 210098，China)
Abstract：Comparing with some other constitutive relations，which only consider the influence of two stress invariants，about the deformation behaviour of rocks，a model is proposed considering the influence of the third deviatoric stress invariant through a similar angle on the basis of Rudnicki and Rice(RR) single yield surface model and Issen two yield surface model. The model is used to obtain the determinant condition of the three types of deformation bands and band angles. The axisymmetric stress state data are chosen of Mogi¢s experiment on Dunham-Dolomite and Haimson¢s on Westly granite as boundary condition to deduce the elastoplastic parameters in the model，and then to predict the band angle of the other stress states. The results are compared with the data of Mogi¢s true trixial test on Dunham-Dolomite，and it is found that the predictions are in reasonable agreement with the experiment data more than the two stress invariants model.
李云祯,黄涛，戴本林，蔡臣. 考虑第三偏应力不变量的岩石局部化变形预测模型[J]. 岩石力学与工程学报, 2010, 29(07): 1450-1456.
LI Yunzhen1，2，HUANG Tao1，DAI Benlin3，CAI Chen1. PREDICTION MODEL OF LOCALIZATION DEFORMATION OF ROCKS CONSIDERING THE THIRD DEVIATIORIC STRESS INVARIANT. , 2010, 29(07): 1450-1456.
