TY - JOUR
T1 - Rheological Analysis of Tunnel Excavation by Means of Coupled Finite Element (FEM) - Boundary Element (BEM) Analysis
AU - Swoboda, G.
AU - Mertz, W.
AU - Beer, Gernot
PY - 1987
Y1 - 1987
N2 - To facilitate the practical numerical analysis of tunnel structures by means of the finite element method in the case of viscoplastic properties of the rock mass and viscoelastic properties of the shotcrete, this method is coupled to boundary elements. In this way, the unchanged properties of the boundary element region provide enormous savings in computing time. In order to improve the numerical stability of such calculations, a variable time‐step analysis was employed for each time step with an iterative correction method. Characteristic values are obtained from measured values by back‐analysis.
AB - To facilitate the practical numerical analysis of tunnel structures by means of the finite element method in the case of viscoplastic properties of the rock mass and viscoelastic properties of the shotcrete, this method is coupled to boundary elements. In this way, the unchanged properties of the boundary element region provide enormous savings in computing time. In order to improve the numerical stability of such calculations, a variable time‐step analysis was employed for each time step with an iterative correction method. Characteristic values are obtained from measured values by back‐analysis.
U2 - 10.1002/nag.1610110202
DO - 10.1002/nag.1610110202
M3 - Article
SN - 1096-9853
VL - 11
SP - 115
EP - 129
JO - International Journal for Numerical and Analytical Methods in Geomechanics
JF - International Journal for Numerical and Analytical Methods in Geomechanics
IS - 2
ER -