# Isotropic soft material : Iron sheets described by LS model

## Presentation

This model defines a nonlinear B(H) dependence for an isotropic material, from predefined sheets included in the software or from personal materials that the user can import by himself (see : LS model identification with MILS). During solving the behavior of this model is the same as an isotropic spline but in post processing for the computation of iron losses this is a dedicated model of dynamic hysteresis (LS model : Iron losses model), all the data to compute iron losses in the post-processing are already in the material. The interest of this a model is to have an accurate computation of iron losses in post-processing without to get the trouble of convergence and computation time of an hysteresis model during solving.

## Software aspects

- In the menu
**Physics**, click on**Materials**. - In the B(H) properties choose :
**Iron sheets described by LS model** - The user can choose one of the predefined sheets.
- The user can also import his own materials with its iron losses properties
(see :
__LS model identification with MILS__) - Assign materials to a
**Laminated non conducting region**Note: the thickness of the sheet must be the same in the material and in the region.

- M270-35A
- M330-35A
- M330-65A
- M400-50A
- M600-50A
- M600-65A
- M800-50A
- M800-65A

For more informations about electrical steel sheets, see this page : Standards for electrical steel sheets

- In the menu
**Computation**, click on**Computation of iron losses** - Choose the
**Computation type** - Choose the
**Regions**and the computation**Interval**. - Select the model
**Model defined in the material**

## Limitations

This model can be only applied on **Laminated non conducting region**.