*CURE GLASS TRANSITION TEMPERATURE

This option is used to specify the glass transition temperature as a function of the degree of cure.

This option is used to specify the glass transition temperature as a function of the degree of cure. It must be used in conjunction with the CURE KINETICS option.

This page discusses:

See Also
In Other Guides
Curing Processes in Polymers

Products Abaqus/Standard

Type Model data

LevelModel

Required parameters

DEFINITION

Set DEFINITION=DIBENEDETTO to define the glass transition temperature using the DiBenedetto equation.

Set DEFINITION=TABULAR to define the glass transition temperature in tabular form.

Optional parameters

DEPENDENCIES

This parameter is relevant only for DEFINITION=TABULAR.

Set this parameter equal to the number of field variables included in the specification of the glass transition temperature.

If this parameter is omitted, it is assumed that the glass transition temperature depends only on the degree of cure and, optionally, on temperature. For more information, see Material Data Definition.

Data line to define the glass transition temperature using the DiBenedetto equation

First (and only) line
  1. Glass transition temperature in uncured state, θ g , 0 . (Units of θ .)
  2. Glass transition temperature in fully cured state, θ g , ∞ . (Units of θ .)
  3. DiBenedetto model parameter, λ ( λ > 0 ).

Data lines to define the glass transition temperature in tabular form

First line
  1. Glass transition temperature, θ g . (Units of θ .)
  2. Degree of cure, α .
  3. Temperature.
  4. First field variable.
  5. Second field variable.
  6. Etc., up to five field variables.
Subsequent lines (only needed if the DEPENDENCIES parameter has a value greater than five)
  1. Sixth field variable.
  2. Etc., up to eight field variables per line.

Repeat this data line as often as necessary to define the glass transition temperature as a function of the degree of cure, temperature, and user-defined field variables.