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    Wire Materials

    Updated

    The Materials page belongs to the Draw dialog box of the chosen wire type, Fig. 1. In the Materials page the following attributes can be specified:

    Wire Resistivity

    A resistivity in [Ohm meter] can be specified for the wire. This value is used for computing a distributed impedance along the wire, considering the skin effect. The equivalent radius for wires of non-circular cross section will be used to compute the impedance per unit length along the wires.

    Resistivity values in [Ohm meter] for most common conductive materials are the following:

    MaterialResistivity [Ω m]
    Aluminum (Pure)2.65E-8
    Aluminum (6061-T6)4.01E-8
    Aluminum (6063-T832)3.25E-8
    Brass6.41E-8
    Copper1.74E-8
    Phosphor Bronze1.10E-7
    Silver1.59E-8
    Stainless Steel 3027.19E-7
    Tin1.14E-7
    Zinc5.90E-8

    The resistivity of wires is considered in the simulation if the option Wire Resistivity is checked in the Settings panel > of the Setup tab.

    Wire Coating

    Wires can have an insulation or coating material. The cross section of a coated wire is circular, so the equivalent radius will be used for wires having a non-circular cross section.  In this case, the material the coating is made of can be set by the following parameters:

    • Relative Permittivity: It is the dielectric constant of the coating material relative to the permittivity of vacuum.
    • Relative Permeability: It is the magnetic permeability of the coating material relative to the permeability of vacuum.
    • Thickness: It is the thickness of the coating shield. It can be set to zero when no coating is used.
    Fig. 1: Materials page in the Draw dialog box for the Line.

    The wire coating is considered in the simulation if the option Wire Coating is checked in the Settings panel > of the Setup tab.

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