ForceSurfaceDensity¶

Type:	1-Tensor, or section
Range:	[v_1, …, v_3]
Default:	-/-
Appearance:	optional

Specifies a mechanical force surface-density, $\VField{F}^{\mathrm{S}}$ , as used for continuum mechanical problems. Units are newtons per square meter, $\units{N/m^2}$ .

Note

A ForceSurfaceDensity is only definable for a physical boundary. So, setting DomainId in the parent section is not allowed.

A constant force surface-density can be defined by assigning a 3-vector:

# define a constant force surface-density
ForceSurfaceDensity = [..., ... , ...]

For more general cases, a force surface density may be given as a section in order to deal with space, time, and parameter dependent definitions:

# define a force surface-density as a section
ForceSurfaceDensity {
  Constant {...}
  Python {...}
  ...
}

Field definitions within this section are summed up. Consult the subsequent sections to see which types of field definitions are allowed.