EM material
Where it is
Section titled “Where it is”Not a setup-tree node. Embedded in the application.
Controls
Section titled “Controls”MATERIAL
Section titled “MATERIAL”Browse…
Section titled “Browse…”- Control: action (
ToolButton2)
Relative permittivity εr
Section titled “Relative permittivity εr”- Control: value (
ValueField) - Value modes: none (plain entry)
- Shown when:
!root.conduction
A ratio, not a permittivity in F/m — the solver applies ε₀ = 8.854e-12 itself. Vacuum and air are 1, PTFE 2.1, alumina 9.8, water about 80.
Conductivity σ
Section titled “Conductivity σ”- Control: value (
ValueField) - Unit: S/m
- Value modes: none (plain entry)
- Shown when:
root.conduction
Copper is 5.96e7, aluminium 2.5e7, stainless 1.4e6 — a factor of forty between the first and the last, and it is what decides the heat rather than the voltage.
Relative permeability μr
Section titled “Relative permeability μr”- Control: value (
ValueField) - Value modes: none (plain entry)
- Shown when:
root.magnetic
Not in the material library yet, so typed rather than chosen. Air and non-magnetic metals are 1; mild steel is around 1000 and varies hugely with the field level, so treat a published figure as a starting point rather than a constant.
Problems reported against this step
Section titled “Problems reported against this step”The application reports no problems against this step.
… marks a value the application computes at run time, so the source carries no fixed text for it.