Thin Elastic Layer
Use the thin Elastic Layer node to apply elastic and damping boundary conditions on the interior edges of a layered shell. Physically, this means that the spring condition is added at the interface between two layers located in adjacent boundaries.
By adding the Predeformation subnode, you can prescribe that the spring force is zero at a nonzero spring extension.
Shell Properties
Select the material layers to which the spring condition is to be applied.
Table 6-55: Layer Selections; Thin Elastic Layer
Selection
Use All Layers
Selection of Individual Layers
Edge
Same as interface selection when the node is added.
When Use all layers is not selected.
Only a subset of the layers selected in the physics interface can be selected.
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All other settings for the Thin Elastic Layer node are described in the documentation for Thin Elastic Layer in the Solid Mechanics interface.
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For more information about the use of springs, see Springs and Dampers in the Structural Mechanics Modeling chapter.
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For a theoretical background, see Spring Foundation and Thin Elastic Layer in the Structural Mechanics Theory chapter.
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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 activate and deactivate this boundary condition by assigning it to a constraint group. See Load Cases in the Structural Mechanics Modeling chapter.
Location in User Interface
Context Menus
Layered Shell>Mass, Spring, and Damper>Thin Elastic Layer (Edge)
Ribbon
Physics tab with Layered Shell selected:
Edges>Mass, Spring, and Damper>Thin Elastic Layer