Table of Contents
FMILC
Description
Constitutive law for mixed limit condition for element FMILC
The model
This law is only used for non linear thermal analysis of solids. This constitutive law allows to impose a mixed limit condition on a boundary, with a classical penalty method.
Files
Prepro: LFMILC.F
Availability
| Plane stress state | YES |
| Plane strain state | YES |
| Axisymmetric state | YES |
| 3D state | YES |
| Generalized plane state | YES |
Input file
Parameters defining the type of constitutive law
| Line 1 (2I5, 60A1) | |
|---|---|
| IL | Law number |
| ITYPE | 124 |
| COMMENT | Any comment (up to 60 characters) that will be reproduced on the output listing |
Integer parameters
| Line 1 (I5) | |
|---|---|
| IDDL | DDL number (3 = water, 4 = air, 5 = temperature, in 2D case) |
| DDL number (4 = water, 5 = air, 6 = temperature, in 3D case) | |
Real parameters
| Line 1 (1G10.0) | |
|---|---|
| COEFK | K penalty coefficient |
Stresses
Number of stresses
1
Meaning (numerical, not physical)
| SIG(1) | = output or input flow at the boundary : if $V_S < V_0$ : $q=0$ if $V_S > V_0$ : $q=K\left( V_0 - V_S \right) $ |
Where $V$ is either a pressure or a temperature, $V_0$ is the $V$ value of the environment node and $V_S$ is the V value of the integration point.
State variables
Number of state variables
3
List of state variables
| Q(1) | water pressure (IDDL= 3 (in 2D) or 4 (in 3D)) or gas pressure (IDDL= 4 (in 2D) or 5 (in 3D)) or temperature (IDDL= 5, (in 2D) or 6 (in 3D)) of the solid at the integration point under consideration (=$V_S$) |
| Q(2) | reference water pressure (IDDL= 3 (in 2D) or 4 (in 3D)) or reference gas pressure (IDDL= 4 (in 2D) or 5 (in 3D)) or reference temperature (IDDL=5 (in 2D) or 6 (in 3D) (=$V_0$) |
| Q(3) | = $q$ |