Function - Code Aster

Code_Aster, Salome-Meca course material
GNU FDL licence (http://www.gnu.org/copyleft/fdl.html)
Functions and formulas

2 - Code_Aster and Salome-Meca course material GNU FDL Licence
Definitions
FONCTION :
tabulated (discrete) function depending on one parameter
NAPPE :
tabulated (discrete) function depending on two
parameters
FORMULE :
continuum mathematic formula depending on several
parameters

3 - Code_Aster and Salome-Meca course material GNU FDL Licence
Parameters
Parameters : the most useful in Code_Aster
ABSC_CURV Curvilinear abscissa EPSI Strain
DX
DY
DZ
Displacement along X
Displacement along Y
Displacement along Z
SIGM Stress
DRX
DRY
DRZ
Rotation around X
Rotation around Y
Rotation around Z
INST Time
X
Y
Z
Coordinate X
Coordinate Y
Coordinate Z
TEMP Temperature

4 - Code_Aster and Salome-Meca course material GNU FDL Licence
General principles of code and platform (1/4)
Function : definition by (xi,yi)
Parameter
x1x2x3x4x5...x0
y0
y1
y2
...
Function
Abscissas values are stricly increasing : x0<x1<x2<x3<x4<x5<x6<x7<x8<...

5 - Code_Aster and Salome-Meca course material GNU FDL Licence
Function in Code_Aster : mathematical sense
Function
One abscissa, several values :
→ NOT a function
Function has a domain definition
Function can be complex or real
Parameter is only real
domain of definition
Cor R
R