*CURE KINETICS

Define the reaction kinetics for cure modeling capabilities.

This option is used in a material data block to define the reaction kinetics for cure modeling capabilities.

This page discusses:

See Also
In Other Guides
Curing Processes in Polymers

Products Abaqus/Standard

Type Model data

LevelModel

Required parameters

DEFINITION

Set DEFINITION= KAMAL to define the degree of cure rate using the Kamal equation.

Set DEFINITION=TABULAR to define the degree of cure rate in tabular form.

Optional parameters

DEPENDENCIES

This parameter is relevant only for DEFINITION=TABULAR.

Set this parameter equal to the number of field variable dependencies included in the definition of the degree of cure rate, in addition to temperature. If this parameter is omitted, the degree of cure rate does not depend on field variables.

Data lines to define the Kamal model coefficients

First line

  1. Kamal equation coefficient, Z1. (Units of T-1.)

  2. Ratio of the activation energy to the universal gas constant, E1 / R. (Units of θ .)

  3. Kamal equation exponent, m1.
  4. Kamal equation exponent, n1.
  5. Kamal equation parameter, b1.

In addition, you must specify the value of absolute zero using the PHYSICAL CONSTANTS option.

Repeat this data line as often as necessary to define the second, third, etc., terms in the Kamal equation. There is no restriction on the number of terms in the model.

Data lines to define the degree of cure rate in tabular form

First line
  1. Degree of cure rate, α ˙ . (Units of T-1.)
  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 degree of cure rate as a function of the degree of cure, temperature, and user-defined field variables.