ABAQUS Keywords Reference Manual  

*DIELECTRIC
Specify dielectric material properties.

This option is used to define the dielectric property of a fully constrained material for use in coupled piezoelectric analysis.

Product: ABAQUS/Standard  

Type: Model data

Level: Model  

Reference:

Optional parameters:

DEPENDENCIES

Set this parameter equal to the number of field variables included in the definition of the dielectric property. If this parameter is omitted, the dielectric property is assumed not to depend on any field variables but may still depend on temperature. See “Specifying field variable dependence” in “Material data definition,” Section 9.1.2 of the ABAQUS Analysis User's Manual, for more information.

TYPE

Set TYPE=ISO (default) for isotropic behavior. Set TYPE=ORTHO for orthotropic behavior. Set TYPE=ANISO for fully anisotropic behavior.

Data lines to define isotropic behavior (TYPE=ISO): 

First line:

  1. Dielectric constant. (Units of C–1L–1.)

  2. Temperature, .

  3. First field variable.

  4. Second field variable.

  5. Etc., up to six field variables.

Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than six):

  1. Seventh field variable.

  2. Etc., up to eight field variables per line.

Repeat this set of data lines as often as necessary to define the dielectric property as a function of temperature and other predefined field variables.

Data lines to define orthotropic behavior (TYPE=ORTHO): 

First line:

  1. . (Units of C–1L–1.)

  2. .

  3. .

  4. Temperature, .

  5. First field variable.

  6. Second field variable.

  7. Etc., up to four field variables.

Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than four):

  1. Fifth field variable.

  2. Etc., up to eight field variables per line.

Repeat this set of data lines as often as necessary to define the dielectric property as a function of temperature and other predefined field variables.

Data lines to define anisotropic behavior (TYPE=ANISO): 

First line:

  1. . (Units of C–1L–1.)

  2. .

  3. .

  4. .

  5. .

  6. .

  7. Temperature, .

  8. First field variable.

Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than one):

  1. Second field variable.

  2. Etc., up to eight field variables per line.

Repeat this set of data lines as often as necessary to define the dielectric property as a function of temperature and other predefined field variables.