ProductsJMAG Simulation TechnologyModeling

Material Database

JSOL has developed partnerships with material manufacturers to obtain the best possible data for JMAG's material database. Along with our comprehensive database, we continue to work with our partners to provide the necessary data for advanced analyses.

Material Database
Material database with over 730 items of materials

Modeling Materials

JMAG leads the field in material modeling technology. Fast, detailed modeling methods are developed based on ourunderstanding of characteristics for magnetic steel sheets, magnets, and powdered metals. Many companies use JMAG to help develop new materials, which ensures JMAG is always capable of capturing precise material responses.

Hysteresis Modeling

JMAG simulates accurately accounting for both hysteresis including the minor loop and the eddy current inside the magnetic steel sheet. JMAG's highly-accurate material data necessary in the calculation can also use data measured by the user.

Hysteresis Modeling

Coercive Force Distribution

Dysprosium (Dy) diffused magnets can reduce Dy while increasing demagnetization heat resistance by distributing coercive force appropriately. JMAG can simulate these effects. For the case of uniform coercive force for IPM motors, a strong reverse magnetic field is caused on the magnet ends which result in demagnetization (left). By effectively distributing coercive force, demagnetization can be controlled.

Coercive Force Distribution

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Multiphysics

As computational power has increased, companies have started incorporating multiphysics models into their analyses. JMAG began offering this functionality to its users in 1994, when magnetic field/thermal coupled analysis functionality was implemented for induction heating device design. Since then, a considerable amount of development has taken place in the area of multiphysics.
With such a large variety of analysis domains and the complexity of modeling within each domain, JSOL has formed partnerships with CAE vendors in each analysis field with the goal of providing an easy to use platform from which to embark on multiphysics modeling.

High-Frequency Induction Hardening of a Gear

This is an example of high-frequency induction hardening of a gear. Heat is generated as eddy current is induced near the skin of the gear due to harmonic currents of the heating coil. Heat generation acquired through eddy current analysis is passed on to the element face of the thermal analysis model as heat source of the surface, after it has been integrated in the thickness direction. By using the conversion function from volume data to surface data, eddy current accounts for the skin effect and also avoids unnecessary mesh divisions near the surface for thermal analysis. As a result, the analysis has become more efficient.

High-Frequency Induction Hardening of a Gear

Centrifugal Force of a Motor

Stress from the centrifugal force acting upon the rotor is evaluated.
JMAG's capability of stress calculation in one magnetic field analysis realizes constant multifaceted evaluations. Multiple disciplines are closely integrated in JMAG and can easily incorporate multiphysics analysis in your daily analysis work.

Centrifugal Force of a Motor

Magnetostriction Vibration

Magnetostriction is one of the major sources of vibration and noise. This example visualizes vibration induced in a large transformer as well as sound pressure distribution in the surrounding area (on the sphere) based on magnetorestriction distribution results.

Magnetostriction Vibration

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Reference


No Title
NL-1409 JMAG Newsletter September, 2014, "Solutions: JMAG Multiphysics Analysis"
NL-1403 JMAG Newsletter March, 2014, "JSOL Activity Report: Recent initiations with iron loss analysis"
NL-1309 JMAG Newsletter September, 2013, "Solutions: JMAG's initiative on loss analysis"


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