tab_file : depth-table file
- Brief description : defines depth-related parameters.
- Additional information : to each depth value the following parameters are assigned: the void index, vertical oedometric compressibility, effective vertical stress three parameters related to the principal stress theta, m1 and m2. The latter are used to compute the effective stress state from the principal stress components (the effective vertical stress is assumed principal) :
The depth values must be defined from the smallest to the largest. A linear trend is assumed between two consecutive values: at least two values must be present in the file. For each element, the table is used for initializing the effective stress state of all Gauss-Points. According to the material type, it is used for initializing the vertical oedometric compressibility as a function of depth and/or updating it as a function of vertical effective stress. The file path must be written in the tab_list file.
- File type : unformatted ASCII
- Parameters to be set :
| NAME | TYPE | DESCRIPTION | UM |
|---|---|---|---|
TAB_NROW |
integer | number of rows defined in the table | - |
TAB_DEPTH[TAB_NROW] |
real | depth values | \(length\) |
TAB_E[TAB_NROW] |
real | void index values | - |
TAB_CM[TAB_NROW] |
real | vertical oedometric compressibility values | \(stress^{-1}\) |
TAB_SZ0[TAB_NROW] |
real | effective vertical stress values | \(stress\) |
TAB_T[TAB_NROW] |
real | theta values | \(degree\) |
TAB_M1[TAB_NROW] |
real | m1 values | - |
TAB_M2[TAB_NROW] |
real | m2 values | - |
- File structure :
TAB_NROW
TAB_DEPTH[1] TAB_E[1] TAB_CM[1] TAB_SZ0[1] TAB_T[1] TAB_M1[1] TAB_M2[1]
TAB_DEPTH[2] TAB_E[2] TAB_CM[2] TAB_SZ0[2] TAB_T[2] TAB_M1[2] TAB_M2[2]
...
- Example [XYZ principal directions] : this example defines the principal stress directions equal to X,Y and Z axis :
10
0.0 0.77 4.13773E-07 0.00000E+00 0.0 0.333 0.333
500.0 0.72 1.66481E-08 4.87947E+05 0.0 0.333 0.333
1000.0 0.71 7.53438E-09 9.81621E+05 0.0 0.333 0.333
...