Body Load

Add a Body Load to domains for modeling volumetric loads.

Force

Select a Load type—Load defined as force per unit volume (the default), Total force, or for 2D components, Load defined as force per unit area.

Then enter values or expressions for the components in the matrix based on the selection and the space dimension.

• After selecting a Load type, 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. • For Total force, COMSOL Multiphysics divides the total force by the volume of the domains where the load is active. For 2D components, and if Load defined as force per unit area is selected, the body load as force per unit volume is then the value of F divided by the thickness.

Load Type	variable	SI unit	Geometric Entity Level	Space Dimension (components)
Load defined as force per unit volume	FV	N/m3	domains	3D (x, y, z) 2D (x, y) 2D axisymmetric (r, z)
Load defined as force per unit area	FA	N/m2	domains	2D (x, y)
Total force	Ftot	N	domains	3D (x, y, z) 2D (x, y) 2D axisymmetric (r, z)

Location in User Interface

Context Menus

Solid Mechanics>Volume Forces>Body Load

Ribbon

Physics Tab with Solid Mechanics selected:
Domains>Volume Forces>Body Load