ProductsJMAG Simulation TechnologyMesh

It goes without saying that a high quality mesh is critical for a high precision analysis. JMAG gives users several options to create mesh: from automatic to manual mesh, users can choose the method that works best for them. The mesher within JMAG is both advanced and easy to use, which means that JMAG can generate optimal mesh for every type of analysis. We strive to develop automatic mesh generation technology by leveraging more than 30 years of FEA expertise and utilizing JMAG’s unique geometry recognition technology.

Adaptation Technology for Mesh Generation

Every model's mesh is unique; JMAG must be able to recognize the different components and determine what type of calculation will work best. For example, current flowing in a magnet will alter the magnetic field and the necessary calculation method is different than if the magnet has no internal currents. JMAG allows for mesh generation that offers superior, efficient convergence by meeting these needs.

Geometry Recognition

A firm understanding of model geometry characteristics is required to generate optimum mesh. JMAG has unique technology which allows it to recognize critical aspects of a CAD model. By knowing what type of geometry is being modeled, JMAG can help speed up the model setup.

Accurate Analysis of Cogging Torque

The graph shows the cogging torque waveforms, one is of JMAG's mesh model (blue line), the other is of the conventional model (gray line). With the noise cancelling technology, the result of JMAG’s model shows the cogging torque balanced with peak-to-peak.

Accurate Analysis of Cogging Torque

Noise Canceling

Mesh noise (discretization errors) degrades the accuracy of an analysis. JSOL works hard developing technologies to suppress mesh noise. This technology has allowed JMAG to achieve an even higher degree of precision and reliability.

Rotating machine mesh

This figure shows a mesh for stray loss calculation for an IPM motor with an attached housing. With the geometry recognition technology, the number of elements is drastically reduced by generating the extruded mesh for both stacked stator and rotor core parts. For the coil end part, tetrahedral mesh is used but mesh is smoothly connected to the other parts. The housing has the thin layered mesh to represent for the eddy current. The gap part has the mesh highly controlled as regular grid reducing the numerical noise.

Rotating machine mesh

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