Magnetostrictive Materials

Definition

Magnetostrictive material with losses.

Description

The verification of the materials is not automatically done within the context of the ATILA-GiD interface. It is recommended to use CPIEZO from the ATILA supervisor to check the validity of magnetostrictive materials.
Mechanical
sH Elastic compliance at constant Magnetic field m2/N
Coupling
d Piezomagnetic constants m/A
Magnetic
µS/µ0 Relative permeability at constant strain  
Losses
Delta M Mechanical loss angle
Delta P Piezomagnetic loss angle
Delta D Magnetic loss angle
Check with CPIEZO

Illustration

ATILA Implementation

- ATILA can use a different loss angle for every constant. In the interface, and as is usually done, we simplify this situation by using one loss angle per tensor.
 
- The dielectric loss angle (δd) is defined as the ratio of the imaginary to the real parts of the dielectric permittivities at constant stress.

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