Curves
Curve entities define and store xy data and are associated with a plot entity.
Curves do not have a display state. However, the display of a curve in a xy plot window is controlled by the display state and active state of its associated plot.
Abaqus Cards
Card  Description 

*AMPLITUDE  Define an amplitude curve Note: For Standard and Explicit profiles:
The TABULAR definition reads either pairwise entries (new) or four pairs of values per dataline (old). The EQUALLY SPACED option has been updated to the new format as well. The old format is required by users using pre 6.9 Abaqus solver. The reader can read both formats. The card will be exported the same way as it was imported. The card image allows you to switch between both formats. 
EXODUS Cards
Card  Description 

Function  Time, frequency and/or spatially dependent functions for transient and frequency response analysis. 
LSDYNA Cards
The output of curves creates a *DEFINE_CURVE or Structured Card 22 using Option 0.
*DEFINE_CURVE can be changed to *DEFINE_TABLE in the card previewer. When DEFINE_CURVE is changed to DEFINE_TABLE, the number of curves the table should contain depends on the XY curves that are referenced by a load, material, component, property, and so on are output.
Upon input, the *DEFINE_CURVE and *DEFINE_TABLE/Card 22 cards are read and placed in a plot called LSDYNA Load Curves. Upon input, references to curves are preserved and are output along with the card, such as material, component, property and load.
Card  Description 

*DEFINE_CURVE  Define a curve. 
*DEFINE_CURVE_SMOOTH  Define a smoothly varying curve using few parameters. 
*DEFINE_CURVE_TRIM  Define a curve for trimming. 
*DEFINE_CURVE_TRIM_3D  Define a curve for trimming. Trimming is processed based on the element normal rather than the vector. 
*DEFINE_FUNCTION  Define a function that can be referenced by a limited number of keyword options. 
*DEFINE_TABLE  Define a table. 
*DEFINE_TABLE_2D  Define a table. 
*DEFINE_TABLE_3D  Define a table. 
OptiStruct Cards
Card  Description 

MBCRV  Specifies the data used to define a curve. Note: Bulk Data Entry

TABDMP2  Defines modal damping as a tabular function of mode index. Note: Bulk Data Entry

TABLED1  Defines a tabular function for use in generating
frequencydependent and timedependent dynamic loads. Note: Bulk
Data Entry

TABLED2  Defines a tabular function for use in generating
frequencydependent and timedependent dynamic loads. Also contains parametric data
for use with the table. Note: Bulk
Data Entry

TABLED3  Defines a tabular function for use in generating
frequencydependent and timedependent dynamic loads. Also contains parametric data
for use with the table. Note: Bulk
Data Entry

TABLED4  Defines the coefficients of a power series for use in
generating frequencydependent and timedependent dynamic loads. Also contains
parametric data for use with the table. Note: Bulk
Data Entry

TABLEG  Defines a general tabular function for use in supported
reference entries. Note: Bulk Data Entry

TABLEM1  Defines a tabular function for use in generating
temperaturedependent material properties. Note: Bulk
Data Entry

TABLEM2  Defines a tabular function for use in generating
temperaturedependent material properties. Also contains parametric data for use
with the table. Note: Bulk
Data Entry

TABLEM3  Defines a tabular function for use in generating
temperaturedependent material properties. Also contains parametric data for use
with the table. Note: Bulk
Data Entry

TABLEM4  Defines coefficients of a power series for use in
generating temperaturedependent material properties. Also contains parametric data
for use with the table. Note: Bulk
Data Entry

TABLEMD  Defines a multidimensional tabular function which
identifies single or multiple Xvalues for a single Yvalue. Note: Bulk Data Entry

TABLES1  Defines a tabular function for use as stressstrain curve
in elastoplastic material properties MATS1,
MATX33, MATX65, MATHF, as
well as material curve in nonlinear material properties MATX36,
MATX42, and MATX70. The
TABLES1 entry can also be used to define the corresponding
material curves on the MATHE Bulk Data Entry. Note: Bulk
Data Entry

TABLEST  Specifies the material property tables for
elastoplastic, temperaturedependent materials. Note: Bulk
Data Entry

TABLEXN  Defines a tabular function for Stress (X)  Life (Y)
pairs to define an SN curve. Note: Bulk Data Entry

PAMCRASH Cards
Card  Description 

FUNCT/  Definition of curves. 
LOOKU /  Look up table cards. 
Permas Cards
Card  Description 

$FUNCTION  Function definition. 
Radioss Cards
Card  Description 

/FUNCT  Defines a function (For example: stress (Yaxis) as a
function of strain (Xaxis)). Note: Block Format Keyword

/MOVE_FUNC  Describes the function scale and shift. Note: Block Format Keyword
