Magnetostrictive Material

The node defines the magnetostrictive material properties.

In case of linear magnetostriction model, the material data can be entered either in the strain-magnetization form using the elasticity matrix and the coupling matrix, or in stress-magnetization form using the compliance matrix and the coupling matrix. It is normally used as part of Magnetostriction multiphysics interface together with a multiphysics coupling node and node in the corresponding interface. node is added by default to the interface when adding a Magnetostriction multiphysics interface. The interface requires the AC/DC Module and at least one of the following modules: Structural Mechanics, MEMS, Acoustics.


	When the Magnetostrictive Material node is added to the Structural Mechanics interface in the absence of an active Magnetostriction multiphysics coupling node, the material behaves similarly to a Linear Elastic Material node with some limitations on the format for the elastic material data input. All the magnetic material data and coupling data will have no effect. The magnetostrictive effect is then not included in the corresponding equation system.

•

•

•


	See also Magnetostrictive Material in the Structural Mechanics Theory chapter.

Select a — or . For each of the following, the default uses values . For , enter other values in the matrix or field as needed.

•

For , select a (sH).

•

For a , select an (cH).

•

Select a (dHT or eHS).

•

Select a (μrT or μrS).

•


	For entering these matrices, use the following order (Voigt notation), which is the common convention for magnetostrictive materials: xx, yy, zz, yz, xz, zy.

If any material in the model has a temperature dependent mass density, and is selected, the list will appear in the section. As a default, the value of Tref is obtained from a . You can also select to enter a value or expression for the reference temperature locally.


	The density is needed for dynamic analysis or when the elastic data is given in terms of wave speed. It is also used when computing mass forces for gravitational or rotating frame loads, and when computing mass properties (Computing Mass Properties).