*4.3.5 Running and plotting the result*

The simulation software used is the Finite Element Method Magnetics (FEMM). The software is used to simulate the magnetic valve design that has been made. 2D designs that have been created are then exported to FEMM. Next, the problem setting to be simulated is determined, namely the magnetic problem with the symmetrical type. After the basic settings for the simulation are carried out, then adjust the material selection and coil selection according to the design that has been made.

The materials selection in the valve circuit is considered to get optimal results. Material selection is based on a predetermined valve design. Thus the direction of magnetic flux can be bent by nonmagnetic materials and produce a magnetic flux direction that is perpendicular to the direction of fluid flow. This is under the coil

**Figure 5.** *Meshing result.*

*Finite Element Magnetic Method for Magnetorheological Based Actuators DOI: http://dx.doi.org/10.5772/intechopen.94223*

**Figure 6.** *(a) Magnetic flux density results from the FEMM simulation; (b) magnetic flux density plot.*

configuration, and the fluid flow path geometry arrangement used to obtain the magnetic flux direction perpendicular to the fluid direction.

After all the parameters have been adjusted, proceed with the meshing process and simulate to get the magnetic flux density (B) results, as shown in **Figure 6**.
