CURVE
Parameters and functions
*CURVE
"Optional title"
cid, $sf_{\mathrm{x}}$, $sf_{\mathrm{y}}$, type${}_{\mathrm{x}}$, type${}_{\mathrm{y}}$
$x_1$, $y_1$
.
$x_{\mathrm{n}}$, $y_{\mathrm{n}}$
"Optional title"
cid, $sf_{\mathrm{x}}$, $sf_{\mathrm{y}}$, type${}_{\mathrm{x}}$, type${}_{\mathrm{y}}$
$x_1$, $y_1$
.
$x_{\mathrm{n}}$, $y_{\mathrm{n}}$
Parameter definition
Variable
Description
cid
Curve identification number
$sf_{\mathrm{x}}$
Scale factor for abscissa values
$sf_{\mathrm{y}}$
Scale factor for ordinate values
type${}_{\mathrm{x}}$
Abscissa data type
type${}_{\mathrm{y}}$
Ordinate data type
$x_1$, $y_1$
First abscissa ordinate pair
.
$x_{\mathrm{n}}$, $y_{\mathrm{n}}$
Last abscissa ordinate pair
Description
Definition of a piecewise linear curve. Note that a curve and a function (see FUNCTION) can not have the same ID. Abscissa and ordinate data types only need to be specified if the curve is to be subjected to an automatic unit conversion (see example below).
Example
Curve
*CURVE
1, 1.0, 1.0
0.0, 0.0
1.0, 2.0
2.0, 8.0
Unit system conversion
Conversion of material parameters from MM/TON/S to SI units:
*UNIT_SYSTEM
SI
~convert_from_MMTONS
*MAT_METAL
1, 2.7e-9, 70.0e3, 0.3
1
*CURVE
1, 0, 0, strain, stress
0.0, 200.0
1.0, 280.0
~end_convert
The input above is equivalent to:
*UNIT_SYSTEM
SI
*MAT_METAL
1, 2700.0, 70.0e9, 0.3
1
*CURVE
1
0.0, 200.0e6
1.0, 280.0e6
