Creep

Use the subnode to define the creep properties of the material model. Creep can be added to Linear Elastic Material, Layered Linear Elastic Material, and Nonlinear Elastic Material.

The Nonlinear Structural Material Module is required for this material model.

If the Composite Materials Module analysis is available, the creep model can be applied to arbitrary layers in a multilayered membrane.


	See also the discussion in Layered and Nonlayered Membranes.

Shell Properties

This section is present only when the node is used under Layered Linear Elastic Material.

Select the layer or layers for which this plasticity model is to be used.

Table 7-4: Layer Selections; Creep
Selection	Use All Layers	Selection of Individual Layers
Boundary	Same as parent selection when the node is added.	When Use all layers is not selected. Only a subset of the layers selected in the parent can be selected.

When the creep model differs between layers, you will need to add several nodes with different layer selections. If the model is the same, and only the material data values differ, you can use a single node where is used to define the values. The data for each layer is then received from global nodes.

If the same layer is selected in two nodes being active on the boundary, then there will be two creep strain contributions.

•

All other settings for the node are described in the documentation for Creep in the Solid Mechanics interface.

•

For a general description of layer and interface selections, see The Shell Properties and Interface Selection Sections.

•

You can provide material parameters with a through-thickness variation by explicitly or implicitly using expressions containing the extra dimension coordinate as described in Using the Extra Dimension Coordinates.

Location in User Interface

Context Menus

Ribbon

Physics tab with , , or node selected in the model tree: