JMAG Version 10.0

- Using JMAG as a Design and Evaluation Tool -

Improving Accuracy while Maintaining Speed: Semi Auto Mesh Function

A semi auto mesh function was implement in JMAG-Designer version 5 (the previous version). In addition to the auto mesh function that is used to generate a high-quality mesh, the semi auto mesh function is used to generate mesh based on the element sizes specified by the user to reduce the time required to generate mesh. The time required to generate the mesh can be reduced greatly by using the semi auto mesh function. However, the quality of the mesh was difficult to control if the element size of the mesh was to large.
The semi auto mesh function has been enhanced to generate a higher quality of by re-generating the mesh with the appropriate element size based on the geometry of a model. Naturally, the fundamental purpose of the auto mesh function to generate high quality mesh quickly has been maintained.
A mesh to simulate the skin effect has also been added. Mesh to simulate the skin effect can be generated for 2D models or for specified areas, such as the faces of a solid. Furthermore, errors caused by variations in the mesh have been reduced by copying the mesh after specifying a parent and child relation.

Mesh to simulate the skin
effect generated for only
the specified faces

Specifying the Deterioration of the Magnetic Properties: Magnetic Field Analysis

The speed of the solver has been improved for magnetic field analyses. In addition to a faster solver, the magnetization characteristics can now be calculated in JMAG ver. 10. One of these features has increased the accuracy when calculating nonlinear magnetic properties using a frequency response analysis. There were limitations to the accuracy of a frequency response analysis when the magnetic saturation was strong, however, the accuracy of these analyses have been improved in version 10. A function to adjust the magnetic properties of materials has also been implemented. The deterioration of materials can now be modeled by applying correction coefficients to the magnetic properties of magnetic materials and permanent magnets. This function can also be applied to materials in the material database to visualize the effects of manufactured deterioration.

Using JMAG-Studio

Although this article has focused on introducing the functions that have been added and improved in JMAG-Designer, the solver and mesh functions described above have been implemented in JMAG-Studio as well as JMAG-Designer. The output files for both JMAG-Designer and JMAG-Studio are bilaterally compatible, and both systems can be run on the same computer. Even though the quality of JMAG-Studio will continue to improve in the future, please don't hesitate to try JMAG-Designer which offers a new type of framework for analysis technology.


  1. Implementing JMAG
  2. JMAG-Express
  3. JMAG Version 10.0
  4. JMAG Application Catalog
  - [Efficiency Analysis of an IPM Motor]
  - [Superimposed Direct Current Characteristic Analysis of a Reactor]
  5. Technical Report Vol.1
  6. For Anyone Considering Implementing JMAG-Designer
  7. List of Distributors

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