3.6.7 Membrane submodeling

Product: ABAQUS/Standard ABAQUS/Explicit

Elements tested

M3D3 M3D4 M3D4R M3D6 M3D8R

Features tested

The submodeling capability is applied to membrane models. The global input files use the models from the membrane patch tests described in “Membrane patch test,” Section 1.5.1. The submodel input files model the right half of the global model; in ABAQUS/Standard the submodel has 16 M3D8 elements, and in ABAQUS/Explicit the submodel uses 16 M3D4R or 32 M3D3 elements. The submodel driven nodes lie along the line parallel to the -axis of the model. In ABAQUS/Standard static perturbation and static general procedures are tested. In ABAQUS/Explicit the analysis is performed as a quasi-static procedure; a velocity boundary condition that gives rise to the perturbation is specified instead of the perturbation step.

Problem description

The global models' dimensions and material properties are the same as in the patch tests used in “Membrane patch test,” Section 1.5.1. The nodal file requests have been changed to enable the interpolation for the driven variables' values or driven nodes' history amplitudes. The submodel material properties are the same as the global model properties.

Results and discussion

All driven variables are correctly interpolated from the global analysis. Since the prescribed displacement and/or concentrated force patterns are brought to their physical positions on the submodel, the stress fields do not match in both models.