Command manual

Command list

CURVE

Parameters and functions
*CURVE
"Optional title"
cid, $sf_{\mathrm{x}}$, $sf_{\mathrm{y}}$, type${}_{\mathrm{x}}$, type${}_{\mathrm{y}}$
$x_1$, $y_1$
.
$x_{\mathrm{n}}$, $y_{\mathrm{n}}$

Parameter definition

VariableDescription
cid Curve identification number
$sf_{\mathrm{x}}$ Scale factor for abscissa values
default: 1
$sf_{\mathrm{y}}$ Scale factor for ordinate values
default: 1
type${}_{\mathrm{x}}$ Abscissa data type
options: time, length, disp, velo, acc, force, stress, strain, pressure, temp, energy
type${}_{\mathrm{y}}$ Ordinate data type
options: time, length, disp, velo, acc, force, stress, strain, pressure, temp, energy
$x_1$, $y_1$ 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
Piecewise linear function
Piecewise linear function
Unit system conversion

Conversion of material parameters from MMTONS 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