emag tutorial 1: field surrounding a permanent...

EMAG Tutorial 1: Field EMAG Tutorial 1: Field EMAG Tutorial 1: Field Surrounding a

Permanent Magnet

EMAG Tutorial 1: Field Surrounding a

Permanent Magnetgg

Tutorial 1

January 24, 2010© 2010 ANSYS, Inc. All rights reserved.

ANSYS, Inc. Proprietary Inventory #0030001-1

Training Manual

Module 1Electromagnetic Analysis

Training Manual

Workb

• Objectives: – Define polarization of a

b t t

kbench-Si

bar permanent magnet– Apply flux parallel

boundary conditions to approximate the far field Sim

ulatio

– Post processing: scope the field to individual bodies

– Create section plane to

on Emag

Create section plane to better visualize the field



Training Manual


Training Manual

Workb

S W kb h

kbench-Si

Start Workbench

Simulatioon Em

ag



Training Manual


Training Manual

Workb

The Project Page Loads…

kbench-SiSimulatioon Em

agHold down LMB to drag Geometry into the

Project Schematic



Training Manual


Training Manual

Workbkbench-Si

Design Modeler GUI

Simulatioon Em

ag

Double Click on Geometry to bring up Design Modeler GUI

Choose “Meter”



Training Manual


Training Manual

Workb

Create a block with the dimension shown kbench-SiSim

ulatioon Emag



Training Manual


Training Manual

Workb

Create a coordinate system using, in order the 3 points shown Set “Export

kbench-Si

order, the 3 points shown. Set Export Coordinate System?” to “Yes”. This coordinate system will be used to

define the direction of polarization.

Simulatio

de e t e d ect o o po a at oYou can rename the coordinate system

name in “Details”.

on Emag



Training Manual


Training Manual

Workb

Create an enclosure – the domain surrounding the PM. It is very important kbench-Si

g yto set “Merge Parts?” to “Yes”.

Simulatioon Em

ag



Training Manual


Training Manual

Workbkbench-Si

Now might be a good time to save the project as

“PM in air”

Simulatio

PM_in_air

on Emag



Training Manual


Training Manual

Workbkbench-SiSim

ulatioon Emag

On the Project Page, drag a Magnetostatic Analysis System onto Geometry



Training Manual


Training Manual

Workbkbench-SiSim

ulatioon Emag

Double click on Model



Training Manual


Training Manual

Workbkbench-SiSim

ulatio

RMB

on Emag

When Mechanical GUI appears, create a variable in the variable manager named “ansys 230x”, set its value to 1, and check the

“active” box.



Training Manual


Training Manual

Workb

Return to the Project Page and open Engineering Data. From Magnetic B-H

C d t dd

kbench-Si

Curves data source, you can add Neodymium PM to the list of materials

to be included in Engineering Data (the material properties that are

Simulatio

(the material properties that are available in the model).

on Emag



Training Manual


Training Manual

Workb

You can verify that Neodymium PM has been added by choosing

E i i D t d i ti th

kbench-Si

Engineering Data and inspecting the its contents in the Outline Schematic. If you have not already done so, you

should now click “Refresh Project” at

Simulatio

should now click Refresh Project at the top of the Project Page to load

the data into Mechanical. on Emag

Verify



Training Manual


Training Manual

Workbkbench-Si

Return to the Project and double click on Model to bring up the Sim

ulatio

g pMechanical GUI

on Emag



Training Manual


Training Manual

Workb

It i ft t ibl t

kbench-Si

It is often most sensible to use the Wireframe display mode.

Simulatioon Em

ag



Training Manual


Training Manual

Workb

Choose the solid which is the PM body and change its material kbench-Si

y gassignment to Neodymium PM and

its Coordinate System to “polarization”. Sim

ulatio

The PM body highlights in green on Em

ag



Training Manual


Training Manual

Workb

Make all external surfaces flux parallel kbench-Si

Use Ctrl-LMB to select multiple surfaces Simulatioon Em

ag



Training Manual


Training Manual

Workb

Solve the model (runs in under 1 minute)

kbench-Si

)

Simulatioon Em

ag

After completion, ask for a plot of the total

magnetic flux density RMBmagnetic flux density



Training Manual


Training Manual

WorkbThe image will

typically be of little

kbench-Si

typically be of little use unless you

request a vector plot representation

Simulatio

representation.

on Emag



Training Manual


Training Manual

Workb

Bring up vector plot controls to adjust

kbench-Si

controls to adjust appearance of plot

Solid

Simulatio

Solid form

on Emag

G idVariable length

Length

Grid aligned

Density



Length adjustment

Density adjustment

Training Manual


Training Manual

Workb“Clean” the results

kbench-Si

Clean the results to scope it to the air

body alone. SimulatioRMB on Em

ag



Training Manual


Training Manual

Workb

Choose the single body enclosing the PM and re-evaluate the B field

kbench-Si

PM and re evaluate the B field

Simulatioon Em

ag

RMB



Training Manual


Training Manual

Workbkbench-Si

Insert a section plane, then view

down the z axis to t th l

Simulatio

create the plane

on Emag



Training Manual


Training Manual

Workb

Create a section plot LMB, then drag a line to define the

kbench-Si

section plane

Simulatioon Em

ag



Training Manual


Training Manual

Workbkbench-Si

Adjust location of section plane after

returning to

Simulatio

gcontour plot mode

on Emag



emag tutorial 1: field surrounding a permanent...

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