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*CONTACT PERMEABILITY
Specify fluid permeability contact property.

This option is used to modify pore fluid permeability in a surface interaction model. It must be used in conjunction with the *SURFACE INTERACTION option. If this option is omitted, the surface interaction model will have no resistance to fluid flow across a contact interface (corresponding to infinite permeability) while contact is active and for clearances up to a default tolerance distance.

Product: Abaqus/Standard  

Type: Model data

Level: Model  

References:

Optional parameters:

CUTOFF FLOW ACROSS

Set this parameter equal to a cutoff clearance distance above which no fluid flow occurs across a contact interface.

CUTOFF GAP FILL

Set this parameter equal to a cutoff clearance distance above which no fluid flow occurs into or out of a contact interface due to changes in clearance distance.

DEPENDENCIES

Set this parameter equal to the number of field variables on which the contact permeability, , depends.

Data lines to define the contact permeability, , directly: 

First line:

  1. Contact permeability, . (Units of L2TM–1.)

  2. Contact pressure, .

  3. Average pore pressure, .

  4. Average temperature, .

  5. Average value of the first field variable, .

  6. Average value of the second field variable, .

  7. Etc.

Repeat this data line as often as necessary to define the dependence of contact permeability on the contact pressure, average surface pore pressure, average surface temperature, and the average of any predefined field variables on the surfaces.