Polymer Viscoplasticity
Use the Polymer Viscoplasticity subnode to define the viscoplastic properties of a Hyperelastic Material node.
The Nonlinear Structural Materials Module is required for this feature. For details, see https://www.comsol.com/products/specifications/.
Shell Properties
Select the layer or layers for which this viscoplastic model is to be used.
Table 6-12: Layer Selections; Polymer Viscoplasticity.
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 viscoplastic model differs between layers, you will need to add several Polymer Viscoplasticity nodes with different layer selections. If the model is the same, and only the material data values differ, you can use a single Polymer Viscoplasticity node where From material is used to define the values. The data for each layer is then received from global Layered Material nodes.
If the same layer is selected in two Polymer Viscoplasticity nodes being active on the same boundary, the second definition will override the previous.
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All other settings are described in the documentation for Polymer Viscoplasticity in the Solid Mechanics interface.
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For a general description of layer and interface selections, see The Shell Properties and Interface Selection Sections.
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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
Layered Shell > Hyperelastic Material > Polymer Viscoplasticity
Ribbon
Physics tab with Hyperelastic Material node selected in the model tree:
Attributes > Polymer Viscoplasticity