Displacement¶

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

Defines a geometric deformation field as used in the continuum mechanics. The value at an evaluation point consists of a 3-vector specifying the local displacement. Units are meters, $\units{m}.$

A constant displacement field can be defined by assigning a 3-vector:

# define a constant displacement
Displacement = [..., ..., ...]

For more general cases, a displacement field may be given as a section in order to deal with space, time, and parameter-dependent definitions:

# define a displacement as a section
Displacement {
  Constant {...}
  Python {...}
  ...
}

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