Added Mass, Interface
The Added Mass, Interface node is available for boundaries and edges and can be used to supply inertia that is not part of the material itself. Such inertia does not need to be isotropic, in the sense that the inertial effects are not the same in all directions. The inertia is added at the selected interfaces between the material layers.
Interface Selection
Select the interface or interfaces for which this added mass contribution is to be added.
Table 6-53: Interface Selections; Added Mass, Interface
Selection
Apply To
Selection of Individual Interfaces
Boundary, Edge, Point
When added: Top interface.
When Selected Interfaces is selected.
Any interface can be selected.
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All other settings for the Added Mass, Interface node are described in the documentation for Added Mass 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 added mass densities 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>Mass, Spring, and Damper>Interfaces>Added Mass, Interface (Boundary, Edge)
Ribbon
Physics tab with Layered Shell selected:
Boundaries>Interfaces>Added Mass, Interface
Edges>Interfaces>Added Mass, Interface