Ansoft Maxwell, "cannot apply Current Excitation to non planar entity" error

[reni90]

Ok people, i need again your help. So i am modeling this machine in solidworks and i save it as x_b extension so that maxwell can recognise it. My problem is that maxwell recognised the cooper parts as sheets :S
I don't know why, so i can't add material to them, and isolation :(
here are the parts please take a look
https://hotfile.com/dl/195668167/e6fa8e8/rev0.rar.html

 

[Fuxue Jin]

Try ACIS SAT (.sat) and import again

 

[reni90]

Project2 (C:/Users/nino/Documents/Ansoft/)
Maxwell3DDesign1 (Magnetostatic)
[error] Acis error: "Error in Importing C:/Users/nino/Desktop/maxwell/rev0/Assem1sa29navoja.SAT" (8:30:47 feb 23, 2013)
[error] Import Native Bodies: Translation of "C:/Users/nino/Desktop/maxwell/rev0/Assem1sa29navoja.SAT" failed. (8:30:47 feb 23, 2013)


Doesnt work :/

 

[reni90]

Ansoft Maxwell, cannot apply Current Excitation to non planar entity e

the problem was in the geometry, now i solved it.
Ok now i need advises, i want to creat one object rotating, and on stator cores measuring the voltage, how to do that, what simulation type to use?

 

[SirAskalot]

Create a sheet (2D) or solid volume (3D) covering the moving part and assign a moving band to that entity. (right click>assign ...>band) You need to use transient simulation type. As for the induced voltage, you need to crate a coil and assign it to a winding. Run the simulation with a proper time step, and remember V=d /dt, hence the need for proper time step. For a plot of the induced voltage go to Reports>Transient>select Winding ...>

 

[reni90]

this is the file https://hotfile.com/dl/196686924/0b2ee9c/Project1.mxwl.html
could you take atok at it and if it doesn't take to much of your time modife it so i can look how u done it and just let it simulate?

 

[reni90]

should i add the windings as current voltage or external, solid or strained

 

[reni90]

i get this message rev (C:/Users/nino/Desktop/maxwell/rev1/)
Maxwell3DDesign1 (Transient)
[error] Band mesh failure: 24 of band mesh nodes are shared by both moving and static objects. (5:40:00 mar 16, 2013)
[error] Simulation completed with execution error on server: Local Machine. (5:40:01 mar 16, 2013)

what do i need to do?

 

[SirAskalot]

Maybe try moving the edges of the band object further away from another edge of an object. That is, if this is a machine, the band should be in the middle of the air gap, with equal distance to stator and rotor yoke.

Else, try defining a finer mesh in the area of the outer edge of the band.

 

[reni90]

ok that's done now i have this message
rev (C:/Users/nino/Desktop/maxwell/rev1/)
Maxwell3DDesign1 (Transient)
[warning] Terminal surface mesh does not fit with conduction path in the following bodies {Part2_1,Part2}. Please verify them to ensure no bad effect on solutions! (7:30:11 mar 16, 2013)
[error] Moving part cannot directly touch stationary part. They should be separated by some thickness of the band region. (7:31:02 mar 16, 2013)
[error] Simulation completed with execution error on server: Local Machine. (7:31:02 mar 16, 2013)

the movien part are not touching stationary aprts :S

 

[SirAskalot]

In maxwell the moving part is the whole area enclosed by the band object. The error indicate that your band object also covers some other objects that are stationary.

Make one object covering the moving parts of the machine, the outer edges of this object should not touch anything else than vacuum/air. Then right click this object and assign it the parameter band. No other object in your model should be assigned the band parameter.

 

[reni90]

Ansoft Maxwell, cannot apply Current Excitation to non planar entity e

i have problems with my laptop while making these simulations, so i am thinking to buy a new pc
what specifications would you recommend me for maxwell 3d simulations

 

[gerbi]

i have problems with my laptop while making these simulations, so i am thinking to buy a new pc
what specifications would you recommend me for maxwell 3d simulations

As powerful as possible.
More RAM -> better (bigger mesh can be applied).
Faster CPU -> faster calcs (multicore is not so usefull since Maxwell will use single core of CPU, unless you use multi-core license).

For a PC.. 16-32GB / +3Ghz (2-4 cores) CPU would be good for not very demanding simulations.

 

[wubishet]

Maxwell: Terminal surface mesh does not fit with conduction path in th

Hi guys,
I run a simulation on Maxwell and got the following warning.
"
Terminal surface mesh does not fit with conduction path in the following bodies {Coil}. Please verify them to ensure no bad effect on solutions! "

I could not identify how to fix the problem. chenging mesh size didn't help me.

Thanks in advance for your help !

 

[gerbi]

Simplify this coil (no rounding). In addition, check if your "region" around model does not touch any element besides coil terminals (coil terminals must lay on "region" box plane).

 

[Pankit]

i get this message rev (C:/Users/nino/Desktop/maxwell/rev1/)
Maxwell3DDesign1 (Transient)
[error] Band mesh failure: 24 of band mesh nodes are shared by both moving and static objects. (5:40:00 mar 16, 2013)
[error] Simulation completed with execution error on server: Local Machine. (5:40:01 mar 16, 2013)

what do i need to do?

Maxwell3DDesign1 (Transient)
[error] Band mesh failure: 9 of band mesh nodes are shared by both moving and static objects. (12:38:16 PM Oct 16, 2014)
[error] Simulation completed with execution error on server: Local Machine. (12:38:16 PM Oct 16, 2014)
Please help me.

 

[gerbi]

Create a cylinder which will contain moving parts. Apply band to this cylinder.

 

[Yi Tao]

Excuse me I have the same problem as your first one. And I can't find "select geometry" option.All I can find are "Select Objects", "Select Faces", "Select Edges", "Select Vertices" and "Select Multi". Could you please tell me how to solve this proiblem more in detail?

 

[Fuxue Jin]

What solution type are you using? What do you try to solve?

 

[Yi Tao]

What solution type are you using? What do you try to solve?

I have a detector with a spherical geometry, and there is a little anode ball in the centre of the sphere (the anode is connected with a straight rod). I just want to excite a high volage on the anode ball. But I don't know hou to realize it. And then I want to study the electric field distribution.

 

[Fuxue Jin]

You need to use Electrostatic solution, then you can apply Voltage excitation on an object.

 

[Yi Tao]

You need to use Electrostatic solution, then you can apply Voltage excitation on an object.

Thank you very much!

 

[HamidMazaheri]

Hello
I have a problem as Reni had in the first page of this topic. I have modeled an asynchronous motor in Maxwell2D. When analyzing the model, I get these messages in Message Manager:

Maxwell2DDesign1 (Transient, XY)
[info] User Defined Primitive: Hs01 is modified from 0 to 1 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: Hs01 is modified from 0 to 1 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: SpanExt is modified from 25 to 34.8382 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: One-conductor length: 158.601 (mm). (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: End leakage inductance per coil per turn (4 poles): 0.00020383 (mH). (4:09:55 PM Jan 10, 2016)
[warning] Currently no mesh operations or data link have been created for the setup(s): Setup1. The initial mesh will be used. The initial mesh is usually not fine enough to achieve an accurate solution. (4:09:58 PM Jan 10, 2016)
[error] Maxwell2d solver, process solver2d error: Internal Solver Error: 'Multiple solution domain detected!'. (4:09:58 PM Jan 10, 2016)
[error] Simulation completed with execution error on server: Local Machine. (4:09:58 PM Jan 10, 2016)

What are the origins of the two errors?
I am new with Maxwell, so I apologize asking odd questions.

 

[Fuxue Jin]

The last error is because the first error.

The first error, I am not sure but wonder if you have defined your solution region. In 2D simulation,the region is called balloon or something like that.

Hello
I have a problem as Reni had in the first page of this topic. I have modeled an asynchronous motor in Maxwell2D. When analyzing the model, I get these messages in Message Manager:

Maxwell2DDesign1 (Transient, XY)
[info] User Defined Primitive: Hs01 is modified from 0 to 1 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: Hs01 is modified from 0 to 1 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: SpanExt is modified from 25 to 34.8382 (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: One-conductor length: 158.601 (mm). (4:09:55 PM Jan 10, 2016)
[info] User Defined Primitive: End leakage inductance per coil per turn (4 poles): 0.00020383 (mH). (4:09:55 PM Jan 10, 2016)
[warning] Currently no mesh operations or data link have been created for the setup(s): Setup1. The initial mesh will be used. The initial mesh is usually not fine enough to achieve an accurate solution. (4:09:58 PM Jan 10, 2016)
[error] Maxwell2d solver, process solver2d error: Internal Solver Error: 'Multiple solution domain detected!'. (4:09:58 PM Jan 10, 2016)
[error] Simulation completed with execution error on server: Local Machine. (4:09:58 PM Jan 10, 2016)

What are the origins of the two errors?
I am new with Maxwell, so I apologize asking odd questions.

 

[HamidMazaheri]

You mean that: I should select the edge of the Region and assign it as a Balloon Boundary?
Is it the only Boundary I should assign?

 

[Fuxue Jin]

I am not very familiar with 2D simulation. With modern computers, it is very easy to use 3D model with better result. 2D simulation isn't very useful.

You mean that: I should select the edge of the Region and assign it as a Balloon Boundary?
Is it the only Boundary I should assign?

 

[HamidMazaheri]

Thank you Fuxue Jin.
I think there is sth wrong with running Maxwell. My computer system has an Intel(R) Core(TM) i3 -4150 CPU @3.50GHz processor. When I run the Maxwell it uses only 25 percent of the processor. Is there any way to dedicate a more portion to Maxwell?

 

[Fuxue Jin]

You need additional license to use multiple processors. You can take a look at your settings in Maxwell see if you can use more processors.

Thank you Fuxue Jin.
I think there is sth wrong with running Maxwell. My computer system has an Intel(R) Core(TM) i3 -4150 CPU @3.50GHz processor. When I run the Maxwell it uses only 25 percent of the processor. Is there any way to dedicate a more portion to Maxwell?

 

[HamidMazaheri]

You need additional license to use multiple processors. You can take a look at your settings in Maxwell see if you can use more processors.

Do you know where I can find "Settings"?

 

[HamidMazaheri]

There is something else that seems to be strange and abnormal. I have assigned three series of winding for the Stator of the motor and every winding has some coils. When I change the material of one coil of a winding to vacuum, its current should decrease to zero because of infinite resistance. But nothing changes.
1. Are the assigned coils of a winding connected in series? If so, the current of a winding which contains a vacuum coil should be zero.
2. Or maybe the problem is due to wrong settings of the software.