Linear constitutive law of flow and deformation in porous media for a pipe element
This law is used for linear analysis of coupled seepage and compaction in porous media.
This law is used for one‑dimensional problems.
Prepro: LSOCP1.F
Lagamine: SOLCP1.F
| Plane stress state | YES |
| Plane strain state | YES |
| Axisymmetric state | NO |
| 3D state | NO |
| Generalized plane state | NO |
| Line 1 (2I5, 60A1) | |
|---|---|
| IL | Law number |
| ITYPE | 210 |
| COMMENT | Any comment (up to 60 characters) that will be reproduced on the output listing |
None
| Line 1 (5G10.0) | |
|---|---|
| PERMEA | soil permeability (= k) |
| GAMMA | specific weight of the fluid (= q) |
| OED | oedometer elastic parameter |
| AREA | cross section of the pipe |
| POROS | soil porosity ($=n_0$) |
Note : Y axis is vertical directed from bottom to top. Gravity same direction, other sense.
4
| SIG(1) | axial effective stress |
| SIG(2) | fluid flow in the pipe |
| SIG(3) | fluid flow accumulated as a consequence of the evolution of soil porosity = strain rate |
| SIG(4) | axial total stress |
2
For 2D analysis :
| Q(1) | cross section of the pipe |
| Q(2) | porosity |