ELASTO-VISCOPLASTIC SOIL/WATER COUPLING FINITE ELEMENT ANALYSIS FOR MOUNTAIN TUNNEL IN UNCONSOLIDATED SAND LAYER

Finite element formulation for modelling large deformations in elasto-viscoplastic polycrystals

Anisotropic, elasto-viscoplastic behaviour in polycrystalline materials is modelled using a new, updated Lagrangian formulation based on a three-field form of the Hu-Washizu variational principle to create a stable finite element method in the context of nearly incompressible behaviour. The meso-scale is characterized by a representative volume element, which contains grains governed by single ...

Thermo-elasto-viscoplastic Analysis of Problems in Extension and Shear

The problems of extension and shear behavior of structural elements made of carbon steel and subjected to large thermomechanical loads are investigated. The analysis is based on nonlinear geometric and constitutive relations, and is expressed in a rate form. The materiai constitutive eqtiations arc capab!e of reproducing all nonisothermal, elasto-viscoplastic characteristics. The results of the...

An Algorithm for Finite Element Analysis of Tunnel Supports Based on the Winkler’s Theory

An Algorithm for Finite Element Analysis of Tunnel Supports Based on the Winkler’s Theory

Finite Element Analysis of the Stability of Tunnel Surrounding Rock with Weak Rock Layer

The evaluation of local stability of the tunnel surrounding rock mass with weak rock layer is very important for the economy and security of the tunnel construction. Based on the rock tunnel geological conditions in the construction, the finite element model of the tunnel surrounding rock mass stability analysis with weak rock layer is established in the article by selecting the ABAQUS program ...