Gasket submodeling

This problem contains basic test cases for one or more Abaqus elements and features.

This page discusses:

Elements tested
Features tested
Problem description
Results and discussion
Input files

ProductsAbaqus/Standard

Elements tested

GK3D6

GK3D6T

GK3D8

GK3D8T

GKAX4

GKPE4

GKPS4

Features tested

The submodeling capability is applied to gasket elements. The general static procedure is used for both the global and submodel analyses.

Problem description

Model:

All global models consist of a rectangular gasket, with a length of 3 and a thickness of 0.125. The three-dimensional models have a width of 1. The submodel input files model the right half of the global model. All nodes on the submodel are driven.

Material:


Membrane elastic modulus	68.7 × 10³
Transverse shear stiffness	1.06 × 10⁴
Poisson's ratio	0.3
Thickness behavior	Pressure of 2.75 × 10⁴ at a closure of 1

Loading and boundary conditions

The gasket is loaded through contact with two rigid surfaces. The lower rigid surface is held fixed. The upper rigid surface is moved down and rotated to impart a spatially varying stress response in the gasket. Additional boundary conditions are applied to the gasket to suppress rigid body motion.

Results and discussion

The submodel stress distribution is confirmed to agree with the global model.

Input files

submodelgasket_gk3d6_g.inp: GK3D6 elements; global analysis.
submodelgasket_gk3d8_s.inp: GK3D8 elements; submodel analysis.
submodelgasket_gk3d8_g.inp: GK3D8 elements; global analysis.
submodelgasket_gk3d6_s.inp: GK3D6 elements; submodel analysis.
submodel_gk3d6t_g.inp: GK3D6T elements; global analysis.
submodel_gk3d8t_s.inp: GK3D8T elements; submodel analysis.
submodel_gk3d8t_g.inp: GK3D8T elements; global analysis.
submodel_gk3d6t_s.inp: GK3D6T elements; submodel analysis.
submodelgasket_gkax4_g.inp: GKAX4 elements; global analysis.
submodelgasket_gkax4_s.inp: GKAX4 elements; submodel analysis.
submodelgasket_gkax4n_g.inp: GKAX4N elements; global analysis.
submodelgasket_gkax4_s_n.inp: GKAX4 elements; submodel analysis.
submodelgasket_gkax4_solid_g.inp: GKAX4 elements using solid element numbering; global analysis.
submodelgasket_gkax4_s_solid.inp: GKAX4 elements; submodel analysis.
submodelgasket_gkpe4_g.inp: GKPE4 elements; global analysis.
submodelgasket_gkpe4_s.inp: GKPE4 elements; submodel analysis.
submodelgasket_gkps4_g.inp: GKPS4 elements; global analysis.
submodelgasket_gkps4_s.inp: GKPS4 elements; submodel analysis.