COMSOL 6.2 - Added Mass

Added Mass

The node is available on 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.

Coordinate System Selection

Select the coordinate system to use for specifying the mass distribution in case of a nonisotropic mass contribution. The coordinate system selection is based on the geometric entity level.

Domains (Plate Interface)

From the list select from:

•

(the default)

•

Any additional user-defined coordinate system

Boundaries (Shell and Plate Interfaces)

From the list select from:

•

(the default)

•

(a predefined normal-tangential coordinate system)

•

Any additional user-defined coordinate system

Edges (Shell Interface)

From the list select from:

•

(the standard global coordinate system).

•

(the default)

•

Any additional user-defined coordinate system.


	For details about the definition of local edge systems, see Local Edge System.

Face Defining the Local Orientations

This setting is used in conjunction with a and . If the mass is prescribed for an edge which is shared between boundaries, the edge system can be ambiguous. Select the boundary which should define the edge system. The default is .


	This section is available only for edges in the Shell interface.


	All other settings for the Added Mass node are described in the documentation for Added Mass in the Solid Mechanics interface.

Location in User Interface

Context Menus

Ribbon

Physics tab with selected: