•
|
Global coordinate system (the standard global coordinate system).
|
This section is available only for edges in the Shell interface and is only visible if the selected coordinate system is Local edge system or Shell Local System.
|
•
|
For Force per unit length, the traction components are given explicitly.
|
•
|
For Force per unit area, the given traction components are multiplied by the thickness of the shell in order to give the edge load.
|
•
|
For Total force, COMSOL Multiphysics divides the total force by the length of the edges where the load is active. Then the force is applied in the same way as for a Force per unit length. When working with curved boundaries or local coordinate systems, use this option carefully, as the result is not always intuitive.
|
•
|
For Resultant, enter the Force and Moment with respect to a point. Select the Application point defined using — Centroid, Point, or Coordinates. For Centroid, the coordinates of the application point is the centroid of the selected boundaries. For Point, select a geometrical point in the section Application Point. For Coordinates, enter the global coordinates of the Application point, xa.
|
For the load types Force per unit length, Force per unit area, and Total force, the load list normally only contains User defined. When combining with another physics interface that can provide this type of load, it is also possible to choose a predefined load from this list.
|
When using the Resultant option, it is formally possible to select a nonplanar boundary, but the traction distribution may then be unpredictable.
|
FL
|
N/m
|
|||
FA
|
N/m2
|
|||
Ftot
|
||||
F, M
|
ML
|
||||
MA
|
||||
Mtot
|
N⋅m
|
•
|
x2 is the axis around which the principal area moment of inertia is larger.
|
|