This option is used to provide uniaxial test data. It can be used only in conjunction with the *HYPERELASTIC option, the *HYPERFOAM option, the *LOW DENSITY FOAM option, and the *MULLINS EFFECT option.
Products: Abaqus/Standard Abaqus/Explicit Abaqus/CAE
Type: Model data
Level: Model
Abaqus/CAE: Property module
“Hyperelastic behavior of rubberlike materials,” Section 22.5.1 of the Abaqus Analysis User's Guide
“Hyperelastic behavior in elastomeric foams,” Section 22.5.2 of the Abaqus Analysis User's Guide
“Low-density foams,” Section 22.9.1 of the Abaqus Analysis User's Guide
“Mullins effect,” Section 22.6.1 of the Abaqus Analysis User's Guide
“Energy dissipation in elastomeric foams,” Section 22.6.2 of the Abaqus Analysis User's Guide
Include this parameter to apply a smoothing filter to the stress-strain data. If the parameter is omitted, no smoothing is performed.
Set this parameter equal to the number n such that is equal to the total number of data points in the moving window through which a cubic polynomial is fit using the least-squares method. n should be larger than 1. The default is SMOOTH=3.
Set this parameter equal to the number of field variable dependencies included in the definition of the test data. If this parameter is omitted, it is assumed that the test data depend only on temperature.
First line:
Nominal stress, .
Nominal strain, .
Repeat this data line as often as necessary to give the stress-strain data.
First line:
Nominal stress, .
Nominal strain, .
Nominal lateral strain, . Not needed if the POISSON parameter is specified on the *HYPERELASTIC option or if the *VOLUMETRIC TEST DATA option is used.
Temperature, .
First field variable.
Second field variable.
Etc., up to four field variables.
Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than four):
Fifth field variable.
Etc., up to eight field variables per line.
Repeat this set of data lines as often as necessary to define the test data as a function of temperature and other predefined field variables. Nominal strains and nominal stresses must be given in ascending order.
First line:
Nominal stress, .
Nominal strain, .
Nominal lateral strain, . Default is zero. Not needed if the POISSON parameter is specified on the *HYPERFOAM option.
Repeat this data line as often as necessary to give the stress-strain data.
Set DIRECTION=TENSION to define tensile behavior.
Set DIRECTION=COMPRESSION to define compressive behavior.
Set this parameter equal to the number of field variable dependencies included in the definition of the test data. If this parameter is omitted, it is assumed that the test data depend only on temperature.
First line:
Nominal stress, . (Provide the absolute value if DIRECTION=COMPRESSION.)
Nominal strain, . (Provide the absolute value if DIRECTION=COMPRESSION.)
Nominal strain rate, . (Provide positive values to specify the loading response and negative values to specify unloading.)
Temperature, .
First field variable.
Second field variable.
Etc., up to four field variables.
Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than four):
Fifth field variable.
Etc., up to eight field variables per line.
Repeat this set of data lines as often as necessary to define the test data as a function of temperature and other predefined field variables. Nominal strains, nominal strain rates and nominal stresses must be given in ascending order.
First line:
Nominal stress, . (Provide the absolute value if DIRECTION=COMPRESSION.)
Nominal strain, . (Provide the absolute value if DIRECTION=COMPRESSION.)
Nominal lateral strain, . Default is zero. The value must be negative if DIRECTION=TENSION and positive if DIRECTION=COMPRESSION. (A negative Poisson's ratio is not supported for this model.)
Nominal strain rate, . (Provide positive values to specify the loading response and negative values to specify unloading.)
Temperature, .
First field variable.
Second field variable.
Third field variable.
Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than three):
Fourth field variable.
Etc., up to eight field variables per line.
Repeat this set of data lines as often as necessary to define the test data as a function of temperature and other predefined field variables. Nominal strains, nominal strain rates and nominal stresses must be given in ascending order.
First line:
Nominal stress, .
Nominal strain, .
Repeat this data line as often as necessary to give the stress-strain data.