ProductsFEA Software for Electromechanical DesignJMAG-Designer [Mesh Modeling]

Automatic mesh

The Automatic Mesh feature recognizes the model shape and gaps and automatically generates a high-quality mesh over the entire model including the surrounding air region and air gaps. The adaptive mesh feature uses simulation results to control the mesh size to provide a more optimal mesh.

Mesh generated in the model and in the air region
Mesh generated in the model and in the air region

JMAG Function Videos


Generating Automatic Mesh

Adaptive mesh

JSOL's unique development methods run high-speed adaptive analyses for rotating machines that are highly accurate. They can achieve speeds over ten times faster than traditional methods.
Of course, it produces results for more than rotating machine meshes, as well.

Adaptive mesh
Mesh Division through Adaptive Meshing

JMAG Function Videos


Generate an optimal mesh (Adaptive mesh)

Slide and Rotating Mesh

JMAG’s original mesh generation specializing in rotating machines enables automatic mesh generation suitable for cogging torque computing and without requiring complicated settings. JMAG automatically generates a lattice mesh in the gap, enabling both analysis precision and speed. It also supports skews.

  • Using the Expanded Slide Mesh broadens the effective range of slide mesh functions.
    • Previous versions required use of a patch mesh for axial gap motors, motors with cases, etc.; now analysis accuracy is improved
    • Evaluate eddy current distribution from coil leakage flux inside case
    • Improved efficiency through combination with extruded mesh

Slide and Rotating Mesh
Slide and Rotating Mesh

Expanded slide mesh

Slide and Rotating Mesh Slide and Rotating Mesh

Extruded mesh + Expanded slide mesh

Slide and Rotating Mesh
Using the Extruded Mesh enables contraction of model sizes, shortening analysis time.

JMAG Function Videos


Generate a mesh with periodicity and symmetry
(Rotation Period mesh)

Generate a rough mesh in
the axial direction and detailed
mesh in the circumferential
direction (Extruded mesh)

Generate a sliding mesh in the gap area
(Expanded Slide Mesh)

Layered Mesh

Detailed modeling for the lamination of a steel sheet

Layered Mesh
Layered Mesh for layered laminated steel sheet meshes

JMAG Function Videos


Generate a layered mesh including an insulator (Layered mesh)

Thin Plate Mesh

Generating mesh for an extremely thin plate model in the analysis space, such as a shield or chassis panel, is difficult using conventional mesh generation methods. However, the thin plate mesh feature can generate a sufficiently large mesh in the plane direction based on the layer of mesh that is generated in the thickness direction. The analysis time is reduced and the accuracy improved for problems related to the scale of a model, such as analyzing shield rooms and the eddy currents that are produced in thin plates.

Thin Plate Mesh
Thin Plate Mesh for tubular layered meshes

Thin plate mesh for solid model
Thin plate mesh for solid model

JMAG Function Videos


Generate a mesh giving a shell thickness (Thin Plate Mesh)

Specifying the generation direction of thin solid mesh

Skin Depth Mesh

Mesh divisions that can accurately express offsets in magnetic flux distribution from the skin effect are necessary to evaluate the effects from eddy currents that flow through a conductor. The Skin Depth function can be used to generate a layered mesh of a specified thickness on the surface (face) of a certain part. This makes it possible to do two things. First, you can accurately express offsets in magnetic flux distribution caused by the skin effect, and second, you can generate a mesh capable of evaluating the effects of eddy currents.

10 Eddy current vector distribution on the surface of a claw pole
Eddy current vector distribution on the surface of a claw pole

JMAG Function Videos


Generate a mesh considering skin effect (Skin Depth)

Patch Mesh

  • This is a method for movement analyses that generates a mesh for every step.
  • It can be applied to models such as spindle motors and electromagnetic relays that cannot use a slide mesh.

Patch Mesh
Patch Mesh is a mesh supporting arbitrary motion

JMAG Function Videos


Generate a mesh considering motion (Mesh generated for each analysis step)

Spatial Automatic Mesh

  • Generate a mesh for only the air region without changing existing meshes.
  • It is possible to create a mesh for magnetic field analysis based on a mesh being used in another analysis.

Spatial Automatic Mesh
Air meshes generated on the outer circumference of existing mesh models

JMAG Function Videos


Generate an air region mesh while maintaining an existing mesh

Manual Mesh Editor

A manual mesh editor has been added to JMAG-Designer based on the requests of our users limited by only being able to generate mesh automatically. Manually generating mesh allows the experience gained generating mesh in JMAG-Studio to be applied to analyses run in JMAG-Designer.
Just like JMAG-Studio, mesh can be generated using triangle/square elements for 2D models and a 3D model can be created by dragging the 2D mesh model. These features have been enhanced even further in JMAG-Designer to make creating geometry easier using clear interface.

Manual Mesh Editor
Expand from 2D to 3D mesh models

JMAG Function Videos


Generating a Mesh Manually

Nodal Connections during
Manual Mesh Generation

Specifying unequal spacing when manually generating mesh

Element Size Settings

Element sizes can be specified in detail for vertices, edges, faces, and regions. Mesh can be generated that maintains analysis precision while reducing the number of elements for high calculation efficiency.

Specifying element size for a face
Specifying element size for a face
Specifying element size for a part
Specifying element size for a part

JMAG Function Videos


Setting Mesh Size

Defeature

One of the primary examples of the experience required for modeling is knowing how to reduce the scale of a model by simplifying geometry based on the objective of an analysis. Defeaturing simplifies the geometry of mesh models by removing fillets, chamfers, or holes automatically when generating mesh.

Defeature
Defeaturing simplifies holes

JMAG Function Videos


Simplified geometry (Defeature)

Morphing

The geometry of mesh models can now be manipulated directly. Mesh morphing allows the most accurate results focusing on dimensional variations to be obtained while minimizing error caused by the mesh resulting from small geometrical changes of models.

Morphing
Morphing changes geometries

JMAG Function Videos


Changing mesh model dimensions
(Morphing mesh)

Healing Function

  • Enhanced healing function for generating mesh
    • With the enhanced healing function, the success rate of mesh generation has been greatly improved
    • Causes of failure in mesh generation such as gaps/interferences between parts, small faces/small edges will be fixed and removed automatically
    • Parts to correct or to remove causes of failure including interference as well as tolerance can be specified
Geometry model before healing process
Geometry model before healing process
Mesh model for geometry after healing process
Mesh model for geometry after healing process

JMAG Function Videos


Auto Healing

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