Axisymmetric Gasket Element Library

This section provides a reference to the axisymmetric gasket elements available in Abaqus/Standard.

This page discusses:

See Also
About Gasket Elements
Choosing a Gasket Element
In Other Guides
*GASKET SECTION

Products Abaqus/Standard Abaqus/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

X , Y

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.

Node Ordering and Integration Point Numbering

Link Elements



 

General Elements