ProductsFEA Software for Electromechanical DesignJMAG-Designer [Direct Interface]


An analysis environment capable of examining electromechanical design from multiple perspectives is attained by interactively linking JMAG-Designer to the CAE software for structural and thermal analysis, Abaqus.

  • One-way coupling
    • JMAG --> Abaqus coupling
      • Transferred physical quantities: loss density, electromagnetic force (nodal force, Lorentz force, magnetostriction)
      • Mapping onto Abaqus input files (*.inp)

    • Abaqus --> JMAG coupling
      • Transferred physical quantities: stress
      • Mapping with reference to Abaqus output files (*.odb)

  • Two-way coupling
    • JMAG <--> Abaqus coupling
      • Transferred physical quantities ; loss density, electromagnetic force (nodal force, Lorentz force), temperature, displacement
        • Ex.: JMAG magnetic field - Abaqus thermal/stress coupled analysis; JMAG magnetic field - Abaqus dynamic analysis

    • Select from two methods for two-way analysis
      • Using Abaqus CSE's framework
      • As of JMAG-Designer Ver.12.1, Abaqus CSE coupled analysis settings are available from the GUI


* AbaqusI/F license (fee applies) required

JMAG Function Videos

Two-Way Coupled Analysis
of JMAG and Abaqus

LMS Virtual.Lab

The coupled analysis feature with LMS Virtual Lab brings new added value to JMAG. The highly accurate electromagnetic force results obtained in JMAG can be utilized as excitation force in the powerful structural or noise analyses in LMS Virtual Lab. The link to LMS Virtual Lab is invaluable in investigating ways to reduce the vibration and noise of motors.

LMS Virtual.Lab

JMAG-Designer Ver.13.0 Expanded LMS VL Interface

Magnetic flux density distribution
Magnetic flux density distribution
Magnetostrictive force distribution
Magnetostrictive force distribution
Sound pressure distribution
Sound pressure distribution

LMS Virtual Lab supports all motion forces inside objects.
Supports internal nodal force, magnetostrictive force and Lorentz force


Technologies that can accurately map interdependent physical quantities are needed to handle different physical phenomena with linked analysis using external applications. MpCCI (Multi-Physics Code Coupling Interface) is an interface technology that fulfills this need.
MpCCI, developed by the German company Fraunhofer SCAI, is a general interface tool for coupled analysis.
The process is shown for analysis with JMAG using MpCCI and another CAE tool.

The steps for a coupled analysis with JMAG, which uses MpCCI, and another CAE.


Models from the motor design tool SPEED can be imported into JMAG. Not only geometry, but also materials, winding, and other information are carried over, so analysis calculations can be done immediately after importation. Results from JMAG can also be returned to SPEED for comparative study.


STAR-CCM+ Updated

Thermal fluid analysis software STAR-CCM+ and JMAG can link to each other, enabling machine design that accounts for cooling and fluid motion.
A STAR-CCM+ linked simulation calls JMAG, and JMAG runs in the background.

STAR-CCM+ and JMAG can link to each other

  • Electromagnetic design × cooling

A detailed JMAG loss analysis combined with a STAR-CCM+ thermal fluid analysis allows magnetic performance in drive temperature distribution to be evaluated. Temperature dependent electric conductivity and magnetic properties are accounted for.

Loss distribution
Loss distribution
Temperature distribution accounting for water cooled passages
Temperature distribution accounting for
water cooled passages

  • Electromagnetic design × fluid motion

Electromagnetic agitation and motion of plungers are evaluated with a linked JMAG electromagnetic force analysis and STAR-CCM+ thermal fluid analysis.

Detailed analysis of a solenoid valve
Detailed analysis of a solenoid valve

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