*VOID NUCLEATION

Define the nucleation of voids in a porous material.

This option is used to model the nucleation of voids in a porous material. It can be used only with the POROUS METAL PLASTICITY option.

This page discusses:

See Also
*POROUS METAL PLASTICITY
In Other Guides
Porous Metal Plasticity

ProductsAbaqus/StandardAbaqus/Explicit

TypeModel data

LevelModel

Optional parameters

DEPENDENCIES

Set this parameter equal to the number of field variable dependencies, in addition to temperature, that define the normal distribution of the nucleation strain. If this parameter is omitted, the constants defining the normal distribution may depend only on temperature. See Material Data Definition for more information.

Data lines to define void nucleation

First line
  1. εN, mean value of the nucleation-strain normal distribution.

  2. sN, standard deviation of the nucleation-strain normal distribution.

  3. fN, volume fraction of nucleating voids.

  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 dependence of εN, sN, and fN on temperature and other predefined field variables.