From the main menu bar, select .
A Create Section dialog box appears.
Enter a section name. For more information on naming objects, see Using basic dialog box components.
Select Other as the section Category and Cohesive as the section Type, and click Continue.
The cohesive section editor appears.
Select a material for the cohesive section. If desired, click 
to create a material; see Creating or editing a material, for more information.
Select a Response for defining the constitutive behavior of the cohesive section:
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Select Traction Separation if the response is defined directly in terms of traction and separation. Use this option to model a negligibly thin layer of adhesive (debonding).
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Select Continuum to model a strain state involving one direct (opening strain) and two transverse shear components. Use this option to model a finite thickness adhesive layer.
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Select Gasket to specify that the stress state is uniaxial.
Specify the Initial thickness of the cohesive section.
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Toggle on Use analysis default to use the analysis default value for a Traction Separation or Continuum response. No default value is available for the Gasket response.
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Toggle on Use nodal coordinates to obtain the initial thickness from the nodal coordinates.
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Toggle on Specify, and enter a value for the initial thickness.
Enter a value for the section Out-of-plane thickness. If the section will be used with a two-dimensional region, you must specify the section thickness. Abaqus/CAE ignores the thickness information if it is not needed for the region type.
Click OK to save your changes and to close the cohesive section editor.
in the Property module toolbox.