7.6.18.12.1. Activation_User_Function

Syntax: Thermal Conductivity [{of} SpeciesName] = Activation_User_Function [Background = background | Name = name | Deposit_Name = deposit_name]
Scope: Aria Material
Summary: Temperature user function thermal conductivity model with activation field.
Description: $k = \begin{cases} f_\text{user}(T), & \text{activate} = 1 \\ k_\text{background} & \text{activate} = 0 \end{cases}$

where $f_\text{user}(T)$ is the specified user function, $k_\text{background}$ is set by the “background” parameter and defaults to 0, and $\text{activate}$ is the value of the element field, typically set by a directed energy model. Optionally, an additional user function can be specified for the deposited but not activated material $f_\text{deposit}(T)$ such that

$k = \begin{cases} f_\text{user}(T), & \text{activate} = 1 and \text{deposit} = 1\\ f_\text{deposit}(T), & \text{activate} = 0 and \text{deposit} = 1\\ k_\text{background} & \text{deposit} = 0 \end{cases}$