搜索Maxwell 15.01之缺陷【转发】
2017-06-27 by:CAE仿真在线 来源:互联网
DE28651 In 2D magnetostatic when using a demagnetization link,
the mesh
in the source design and target designs must be identical.
However, if you
have added mesh operations or additional adaptive passes in
the target design
the software will enforce them causing the meshes to be
different. There is
currently no error message, but postprocessing solutions in
the target design
will fail (calculations may fail to evaluate and plots will
show no fields).
使用退磁计算时(2D静态场),网格导入必须要完全相同。因此,在target
design中设置要注意。
DE32794 - In 2D transient using dynamic demagnetization should
not be used
in a design that is also using the advanced setting consider
core loss
effect on field. Results are unreasonable if you attempt to
combine these
2 functions.
动态退磁(2D瞬态场)功能与考虑铁耗影响功能不能联合使用。期待版本升级
DE33012 - In 2D transient models that do not have any windings
defined,
current density output to the postprocessor is incorrect. You
can add a
dummy winding to work around.
没有绕组定义的2D瞬态场模型,进入后处理器中的电流密度是错误的。因此,
要添加一个虚拟绕组。
DE32768 - In 2D transient RZ models force calculations are
incorrect in
passive conducting objects with eddy effects activated.
2D瞬态场RZ模型中,则涡流引起的力计算错误。
DE34048 - In 3D transient when using the advanced feature
"Dynamic
demagnetization distribution", if a magnet is fully
demagnetized and operating
in the 4th quadrant with very high field levels, the B and H
field values
passed to the post-processor are not quite correct and would
show points
on the extension of the BH curve instead of the expected
location on a straight
line with Hc=0. This is a post-processing issue only, the
solver is using the
correct values and field solutions are otherwise
correct.
3D瞬态场中,使用动态退磁分布时,在第4象限中,后处理有误。
DE29212 and DE34138 In 2D transient RZ designs, solid losses
are incorrect
in some cases due to an error in eddy current
calculations.
2D瞬态场RZ模型中,solid losses在一些涡流计算中不正确。
DE33891 and DE34082 In 3D transient with rotational motion,
when using a
magnet in the rotating part of the geometry that was defined
using a
cylindrical coordinate system, vector plots of the fields will
not show
correctly as the magnet rotates position. This is a post
processing issue
only, the field solutions are correct in the solver and other
quantities
(such as torque) are correct. You can avoid this issue by
defining the
magnet using a Cartesian coordinate system.
3D瞬态场旋转运动时,使用直角坐标系定义永磁体方向较好。
In Maxwell 2D transient when working with demagnetization and
temperature
dependence, the temperature dependence only takes effect if
the radio button
in the BH entry dialog for the material is set to Intrinsic
before leaving
the dialog. If you have Normal selected then the thermal
modifier will be
ignored. Conversely, if you are not interested in temperature
dependence you
should convert to the Normal curve before you leave the BH
entry dialog.
In either case, you can enter the data in whichever form you
like, but you
must convert to Intrinsic for temperature dependence, or
Normal for all other
cases.
2D瞬态计算退磁和温度依赖时,注意选择相关的选项。
In 2D transient, dynamic demagnetization of nonlinear magnets
with conductivity
and eddy effect turned on in the magnets, cannot be combined
with coreloss
calculation with the advanced consider coreloss effect on
field setting turned
on and with eddy effects enabled in the winding. This
combination produces
incorrect results. The same combination will work if consider
coreloss effect on
field is turned off.
2D瞬态场中,非线性永磁体的动态退磁计算时(涡流开),不能与考虑铁耗计算、绕组中的涡流效果
联合使用。
转自:http://blog.sina.com.cn/s/blog_4f850b690100ziwe.html
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