Material: definition (structure)

Definition

The Material entity is defined by:

  • a name
  • a type for following physical properties:
    • magnetic property B(H) and B(H,T)
    • electric property J(E) and J(E,T)
    • dielectric property D(E)
    • thermal conductivity k(T)
    • specific heat ρCP(T)
  • specific characteristics belonging to a type

Name

The name to identify the material is set by the user during the creation of this one.

A comment (optional) can be added to the name.

Provided types (models)

Various types (models), provided for the physical properties, are presented in chapter Materials: principles. Brief lists of models are presented in the following blocks. For detailed lists, see:

Outline of the models (1)

An outline of the models for various electromagnetic properties B(H), J(E), D(E) is given in the table below:

B(H) J(E) D(E)
Soft material Hard material
Linear Linear Linear Constant resistivity Linear
Linear complex

Linear complex

Linear with losses
Nonlinear
  • Saturation:
    • analytic
    • analytic + knee
    • spline
  • Rayleigh

Magnetization:

  • analytic
  • analytic + knee
  • spline
 Superconductivity
Hysteresis
  • Preisach
  • Jiles-Atherton

Outline of the models (2)

An outline of the models for various thermal properties k(T), ρCP(T) is given in the table below:

k(T) ρCP(T)
Constant Constant
Linear function of T Linear function of T
Exponential function of T Exponential function of T
Gaussian of T + constant
Gaussian of T + exponential

Outline of the models (3)

An outline of the models for various electromagnetic properties depending on the temperature B(H,T), J(E,T), D(E,T) is given in the table below:

B(H,T) J(E,T) D(E,T)
Soft material Hard material
Linear Linear No models provided Constant resistivity No models provided
Linear complex - -
Nonlinear

Saturation

  • analytic
  • analytic + knee
 -
  • Exponential function of T
  • Linear function of T
  • Exponential function of T