Improvements and Fixed Defects

When the linear system solver selected in the solving process options box is “Solver automatically chosen”:

• Below 500 000 nodes, the direct solver MUMPS is used;
• Above 500 000 nodes, the iterative solver ICCG is used.

FX-12756

FX-13421

The user project contains some incoherences for an FEMT coupling. But FEMT say anything about the problem. Now with Flux 2020:

FX-13232

Before Flux 2020 the "Display PyFlux Command" didn't return the python command corresponding of the creation of a scenario. It was the same problem with the curve entities (the list of result values are returned, and mainly the user want the interval of the creation of the curve only).

With Flux 2020, the "Display PyFlux Command" method return the constructor for these entities: solving scenario, 2D and 3D curves. The user can rebuilt easily a scenario or a curve like other entities.

Scenario['CASE2_SC'].addPilot(pilot=MultiValues
                    (parameter=VariationParameter['TIME'],
              intervals=[IntervalStepValue(minValue=0.0,
                                          maxValue=0.015,
                                          stepValue=0.001),
                         IntervalStepValue(minValue=0.015,
                                          maxValue=0.0155,
                                          stepValue=1.0E-4),
                         IntervalStepValue(minValue=0.05,
                                          maxValue=0.1,
                                          stepValue=0.01)]))
Scenario['CASE2_SC'].addPilot(pilot=MultiValues
                  (parameter=VariationParameter['K_SPRING'],
              intervals=[IntervalStepNumber(minValue=0.0,
                                          maxValue=10000.0,
                                          stepNumber=2)]))

EvolutiveCurve2D(name='EVOLUTIVECURVE2D_1',
  evolutivePath=EvolutivePath(parameterSet=
   [SetParameterFixed(paramEvol=VariationParameter['K_SPRING'],
                                              currentValue= 0),
    SetParameterXVariable(paramEvol=VariationParameter['TIME'],
                                limitMin= 0,limitMax=0.0171)]),
  formula=['EMag(1_DOMAIN)'])

FX-14182

FX-11394

• Added the possibility to export static force values in a compact file format for Altair OptiStruct^TM. The exported files are now generally reduced to about a third of their previous sizes, leading to faster data imports and improved NVH analysis;
• An option for duplicating periodic derived collections (e.g., forces in rotating machinery) is now available when computing their FFTs.
• A feature allowing the user to choose the list of specific harmonic components that will be included in OptiStruct and Nastran export files has been added.

Laminated regions, which were already available in the 2D and 3D modules of Flux, are now also implemented in Flux Skew. As a consequence, new iron losses models such as Bertotti and Loss-Surface (LS) became available in the context of Flux Skew projects. The evaluation of iron losses in Flux Skew is also faster.

• The orientations of magnets are now preserved in all conversions involving magnetic applications.
• In the case of a conversion from a Transient Magnetic application to a Steady State AC or Magneto Static application, the mobile mechanical sets are converted to multi-static.
• When converting to a Magneto Static application, circuit coils are now converted into a Stranded coil conductor with imposed current (A) and their current values are set to 0A.

Modeler extrusion

In this extrusion from an imported sketch, the straight extrusion does not work, but if we try again it works without error. There is the same behavior in python if we replay the command. It is an ACIS issues.

The problem is solved with the upgrade of the ACIS version from 2017.1.0.2 to 2019.1.0.1

CAD import

An update of ACIS (2017.1.0.2 to 2019.1.0.1) has been done in the Flux 2020 and CAD import seems to be better (heal, stitching, ...) - In this associated case "claw pole rotor", after the import, the complete infinite box is done without error message.

CAD import

If we import the same geometry in V11.2 and in the modeler of the version 2018.0 and that we specified a coordinate system for the import, the location of the geometry is not the same, in V11.2 the geometry is shifted with the coordinate system specified, in 2018 it is not the case.

Flux 2020 takes into account correctly the coordinate system in CAD import process with unit management.

CAD import

The CAD import with Flux 2018 is correctly done but the position of the geometry is different to the result obtained with Flux 11.2.

Flux 2020 takes into account correctly the coordinate system in CAD import process with unit management.

CAD Import

With Flux 2020, during the Parasolid import from SimLab - a check and a convert of a closed sheet body in a solid body are done.

Spline

The project solved in V11.2 contains a complex geometry (complex because there are splines) imported in V11.2. The project solved is impossible to open with Flux 2018.0. If the project is not solved, it is possible to open it with Flux 2018.0.

Flux 2020 allows spline lines modification when an associated geometric parameter defined a coordinate system field is modified.

Arcs simplification

The fixed in Flux 2020 is to reverse end points if necessary for non-sketcher arcs.

Infinite box

The problem is solved with the upgrade of the ACIS version from 2017.1.0.2 to 2019.1.0.1

Infinite box

Flux 2020 can complete infinite box with periodicity around X axis with an offset

A correction has been implemented in Flux 2020 to fixed this specific configuration.

With Flux 2020, it is now possible to compute on physical entity for only one formula or several formula and the result can be stored.

Point computation

PointComputation(name='PointComputation_1',
        formula=['comp(1,B)','comp(2,B)','comp(3,B)'])
PointComputation['POINTCOMPUTATION_1'].openSession()
PointComputation['POINTCOMPUTATION_1'].computePoint
        (coordSys=CoordSys['XYZ1'],uvw=['1','0','1'],
          regionVolume='MOVING_AIR')

The computation point wished is not on the selected Volume region. The computation is not possible, but Flux shouldn't crash. Now Flux doesn't crash anymore and an user message is displayed on a dialog box.

Grid 3D

Fixed in Flux 2020

Cleaned in Flux 2020

The new message implemented is :A mesh exists : unable to delete the INFINITE_BOX.