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Fig. 2. Comparison of cogging torque with and without noise canceling technology[2]
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Fig. 3. Variations of time required to generate
mesh with the different mesh engines [1].
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Robustness and Speed is Vital
Of coarse, specialized analysis of electromechanical machines is not the
only vital aspect of development. The robustness to geometry and data as
well as the speed the mesh can be generated is also indispensable. An analysis
cannot be performed if the mesh cannot be generated accurately, yet performing
an analysis that requires a vast amount of time to generate mesh is also
pointless.
The JMAG mesh generation engine is faster than ever before. The variations
of the time required to generate mesh with the different mesh engines is
indicated in Fig. 3. The time required to generate mesh in the new mesh
generation engine has been reduced to 1/9 of the time required for the
conventional mesh generation engine, although the time required depends
on the analysis target and number of elements.
Specialized Mesh Team
The JSOL corporation strives to continually enhance the JMAG mesh generation
engine to satisfy the needs of our users. The mesh team is responsible
for the vast research and development that has been implemented into JMAG.
The JMAG mesh team provides technology to generate the right mesh for analyzing
electromechanical machines based on years of analysis experience. The technology
is obviously implemented into JMAG, but the mesh team also actively communicates
with our users by providing papers of their research, such as [2]-[5],
while continually receiving feedback directly from our users.
Cutting-Edge JMAG Mesh Generation Solver for Electromagnetic Field Analysis
The JMAG mesh generation engine will continue to evolve, enhancing the
accuracy and speed as well as supporting larger scale models. There are
still many avenues of innovation that can be taken to provide our users
with the most accurate mesh that can be generated simply.
JMAG will continue to push the boundaries of electromagnetic field analyses
aiming for "simplicity" as part of the modeling process while
providing "high quality" mesh vital to achieving the highest
level of analysis accuracy.
The next edition introduces material modeling for simulations.
[1]: JMAG Users Conference 2008 Poster Session
[2]: K.Tani, H.Hashimoto, T.Yamada,"High Accuracy Torque Calculation
for a Rotating Machine Using Adaptive Meshing,"IEEJ-D, Vol.123, No.7
pp.790-797, 2003
[3]: K.Tani, T.Yamada, Y.Kawase, "Dynamic Analysis of Linear Actuator
Taking into Account Eddy Current Using Finite Element Method and 3-D Mesh
Coupling Method," IEEJ SA-98-10, RM-98-74, 1998
[4]: K.Tani, T.Yamada, Y.Kawase, "3D Mesh Generation Procedures And
Error Estimation Procedures to Magnetic Field Analysis of Magnetic Heads
by Finite Element Method," IEICE technical report MR98-52, pp.29-35,
1999
[5]: K.Tani, T.Yamada, Y.Kawase, "Dynamic Response Analysis of Linear
Actuator Using Finite Element Method and 3-D Mesh Coupling,"IEEJ SA-99-16,
RM-99-70, 1999
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