地下工程土体三维非线性流变有限元分析

FEM of Non-linear Rheological Problem in Underground Engineering

简述了地下工程中土体三维非线性流变问题的有限元法，建立了基于三维非线性流变的时步-粘弹-粘塑性初应变方法，在此基础上研编了适应性较强的三维非线性流变有限元法分析软件──TDNRAS，并用工程实例分析了地下工程土体的三维非线性流变性态．

FEM Of non-linear rheological problem is simply described in this paper. Based on non-linear rheological analysis, the time stop visco-elastic and visco-plastic initial stain method is presented. The three-dimensionalnon-linear rheological analysis program with wide suitability is studied and programmed, which can be applied toanalyzed the non-lineal rheological character of nuderground engineering problems.