LinearThermalExpansibility¶
Type: | 2-Tensor, or section |
---|---|
Range: | [v_1, …, v_9] |
Default: | -/- |
Appearance: | optional |
Sets the linear thermal expansion coefficient is the fractional change of length of an infinitesimal small body per degree of temperature change, that is
Units are . Since the length changes may be anisotropic the thermal expansion coefficient is a rank-2 tensor.
A constant linear thermal expansion coefficient can be defined by assigning a rank-2 tensor:
Material {
# defines a constant conductivity
LinearThermalExpansibility =
[..., ..., ...
..., ..., ...
..., ..., ...]
}
Assign a scalar for an isotropic thermal expansibility.
For more general cases, the thermal expansibility may be given as a section in order to deal with space, time, and parameter dependent definitions:
# define the density as a section
LinearThermalExpansibility {
Python {...}
...
}
Field definitions within the section LinearThermalExpansibility
are summed up. Consult the subsequent sections to see which types of field definitions are allowed.