Initial Stress and Strain

You can add the subnode to the Linear Elastic Material, in order to specify the stress or strain state in the structure before applying any constraint or load. The values given are not initial values in the mathematical sense but rather a contribution to the constitutive relation.


	In many cases Initial Stress and Strain and External Stress are interchangeable when prescribing stresses, but you can find some more options in the latter.


	For details about initial stresses and strains, see Initial Stresses and Strains.

Shell Properties

Select the layer or layers for which this stress or strain contribution is to be added.

Table 6-12: Layer Selections; Initial Stress and Strain
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.

If the initial stress or strain differ between layers, you will need to add several nodes with different layer selections.

If the same layer is selected in two nodes being active on the same boundary, the contributions will be added.

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All other settings for the node are described in the documentation for Initial Stress and Strain 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 describe stress or strain values 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 node selected in the model tree: