The Lorentz Coupling () is a two-way multiphysics coupling feature between the Magnetic Fields interface and the Solid Mechanics interface. It passes the Lorentz force F = J × B from the Magnetic Fields interface to the Solid Mechanics interface and, passes the induced electric field E = v × B from the Solid Mechanics interface to the Magnetic Fields interface. When modeling electroacoustic transducers, like loudspeakers, the coupling is typically added in the voice coil domain.

The Lorentz Coupling feature is available in 2D, 2D axisymmetric, and 3D geometries and is allowed for both time-dependent and frequency-domain studies. For time-dependent studies, it only accounts for the Lorentz force contribution when the Include geometric nonlinearity check box is selected. The coupling feature handles frames as well as the correct formulation for transient and frequency domain problems.

See Settings for further details about Label and Name.

The default Name (for the first multiphysics coupling feature in the model) is ltzc1.

This section defines the physics involved in the multiphysics coupling. The Magnetic fields and Solid mechanics lists include all applicable physics interfaces.