Axisymmetric gasket element library | ||||||||
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ProductsAbaqus/StandardAbaqus/CAE
Element types
Link elements
- GKAX2
2-node, axisymmetric gasket element
- GKAX2N
2-node, axisymmetric gasket element with thickness-direction behavior only
Active degrees of freedom
1 for gasket elements with thickness-direction behavior only.
1, 2 for other gasket elements.
Additional solution variables
None.
General elements
- GKAX4
4-node, axisymmetric gasket element
- GKAX4N
4-node, axisymmetric gasket element with thickness-direction behavior only
- GKAX6
6-node, axisymmetric gasket element
- GKAX6N
6-node, axisymmetric gasket element with thickness-direction behavior only
Active degrees of freedom
1 for gasket elements with thickness-direction behavior only.
1, 2 for other gasket elements.
Additional solution variables
None.
Nodal coordinates required
Element property definition
You must define the element's initial gap and initial void. In addition, for link elements you must define the element's width.
You can specify the thickness direction as part of the gasket section definition or by specifying a normal direction at the nodes; you can specify the element thickness as part of the gasket section definition. Otherwise, Abaqus/Standard will calculate the thickness direction and the thickness. For link elements the thickness direction is the direction from the first to the second node and the thickness is the distance between the nodes. For general elements the thickness direction is based on the midsurface of the element and the thicknesses at the integration points are based on the nodal positions. See Defining the gasket element's initial geometry for more details.
Input File Usage
GASKET SECTION
Abaqus/CAE Usage
Property module: Create Section: select Other as the section Category and Gasket as the section Type
Element-based loading
None.
Element output
GKAX2 elements
- S11
Pressure or thickness-direction force per unit length in the gasket element.
- CS11
Contact pressure in the gasket element (only available if S11 is a force per unit length and the gasket response is not defined using a material model).
- S22
Hoop stress.
- S12
Shear stress or shear force per unit length.
- E11
Gasket closure if the gasket response is defined directly using a gasket behavior model; strain if the gasket response is defined using a material model.
- E22
Hoop strain.
- E12
Shear motion if the gasket response is defined directly using a gasket behavior model; strain if the gasket response is defined using a material model.
- NE11
Effective thickness-direction strain.
- NE22
Hoop strain.
- NE12
Effective shear strain.
GKAX2N elements
- S11
Pressure or thickness-direction force per unit length in the gasket element.
- CS11
Contact pressure in the gasket element (only available if S11 is a force per unit length and the gasket response is not defined using a material model).
- E11
Gasket closure if the gasket response is defined directly using a gasket behavior model; strain if the gasket response is defined using a material model.
- NE11
Effective thickness-direction strain.
General elements with thickness-direction behavior only
- S11
Pressure in the gasket element.
- E11
Gasket closure if the gasket response is defined directly using a gasket behavior model; strain if the gasket response is defined using a material model.
- NE11
Effective thickness-direction strain.
Other general elements
- S11
Pressure in the gasket element.
- S22
Direct membrane stress.
- S33
Hoop stress.
- S12
Shear stress.
- E11
Gasket closure if the gasket response is defined directly using a gasket behavior model; strain if the gasket response is defined using a material model.
- E22
Direct membrane strain.
- E33
Hoop strain.
- E12
Shear motion if the gasket response is defined directly using a gasket behavior model; strain if the gasket response is defined using a material model.
- NE11
Effective thickness-direction strain.
- NE22
Direct membrane strain.
- NE33
Direct membrane strain.
- NE12
Effective shear strain.