External Stress
You can add the External Stress subnode to the Linear Elastic Material in order to specify an additional stress contribution which is not part of the constitutive relation. The external stress can be added to the total stress tensor, or act only as an extra load contribution.
In many cases External Stress and Initial Stress and Strain are interchangeable when prescribing stresses. In Initial Stress and Strain, the given stress is however always added to the stress tensor.
Layer Selection
Select the layer or layers for which this stress contribution is to be added. The Layer selector inherits the value set in the parent Linear Elastic Material node. When it is set to All layered materials, you cannot access the individual layers.
If the same layer is selected in two External Stress nodes being active on the same boundary, the contributions will be added.
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All other settings for the External Stress node are described in the documentation for External Stress in the Solid Mechanics interface.
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For a general description of layer and interface selections, see The Layer Selection Section.
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You can describe stress 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
Layered Shell>Linear Elastic Material>External Stress
Ribbon
Physics tab with Linear Elastic Material node selected in the model builder tree:
Attributes>External Stress