Defining the constitutive response of fluid within the cohesive element gap

The cohesive element fluid flow model:

  • is typically used in geotechnical applications, where fluid flow continuity within the gap and through the interface must be maintained;

  • enables fluid pressure on the cohesive element surface to contribute to its mechanical behavior, which enables the modeling of hydraulically driven fracture;

  • enables modeling of an additional resistance layer on the surface of the cohesive element; and

  • can be used only in conjunction with traction-separation behavior.

The features described in this section are used to model fluid flow within and across surfaces of pore pressure cohesive elements.

The following topics are discussed:

Related Topics
About cohesive elements
Defining the constitutive response of cohesive elements using a traction-separation description
In Other Guides
Adhesive joints and bonded interfaces