ANSYS 10.0 Workbench Tutorial - Exercise 7, Electromagnetics

ANSYS ED Workbench Tutorial

Electromagnetic Analysis

© 2006 ANSYS, ANSYS, Inc. All rights reserved.

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ANSYS, Inc. Proprietary

Exerci Exer cise se 7 – Ob Obje ctive ve Object Objjecti ectiv ive e

• Analysis of a 2 gap solenoid • A DC solenoid consists of a coil wrapped around a perm pe rmea eabl ble e “U” “U” shape shaped d body and an armature. An analysis is performed to determine forces acting on both the body and the armature.


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Exerci Exer cise se 7 – Ob Obje ctive ve Object Objjecti ectiv ive e

• Analysis of a 2 gap solenoid • A DC solenoid consists of a coil wrapped around a perm pe rmea eabl ble e “U” “U” shape shaped d body and an armature. An analysis is performed to determine forces acting on both the body and the armature.


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Getting Started

Before starting Exercise 7 copy the following file to a local working directory …\ANSYS ED Tutorial\Samples\Exercise7.iges …\ANSYS ED Tutorial\Samples\Exercise7.txt


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Exercise 7 - Outline

• Opening and importing models • Using the Winding Tool • Defining Enclosures • • • •

Naming Components Defining Environments Defining Required Results Viewing Results

• Saving Files

© 2006 ANSYS, Inc. All rights reserved.

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Step 1A – Open the ANSYS ANSYS Workbench

Launch the ANSYS Workbench


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Step 1B – Open the the DesignModeler DesignModeler

Select New Geometry


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Step 1C – Set the Modeling Units

1. Change the desired unit length to millimeters

2. Click OK


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Step 1D – Import an IGES file

1. Select “File>Import External Geometry File”

2. Select (import) “Exercise7.iges”


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Step 1E – Generate the Model

1. Select “Generate” to import and display the model


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Step 2A – Open the Winding Tool

1. Select “Tools>Winding Tool”


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Step 2B – Set the Winding Plane

1. Select the “XYPlane”

2. Select “Apply”


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Step 2C – Import a Winding Table

3. Select “Generate” 1. Browse for the Winding Table File

2. Select “Exercise7.txt”


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Step 2D – Set Viewing Option

1. Select “View>Show Cross Section Solids”


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Step 2E – Set the Stack Length

3. Select “Generate” 1. Select the Winding

2. Change the Stack Length to 50 mm © 2006 ANSYS, Inc. All rights reserved.

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Step 3A – Define the Enclosure

1. Select “Tools>Enclosure”


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Step 3B – Set Cushion and Merging

3. Select “Generate” 2. Change the Cushion to 50 mm

1. VERY IMPORTANT! Change “Merge Parts” field to “yes” © 2006 ANSYS, Inc. All rights reserved.

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Step 4 – Save the Model

2. Select the folder tab to return to the Project Page

1. Select “File>Save”


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Step 5 – Open a New Simulation

3. Select “New Simulation” 1. Make sure “Solid Bodies” is checked 2. Make sure the “Analysis Type” is set to “3D” Note: You may need to expand the menus to view the above options © 2006 ANSYS, Inc. All rights reserved.

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Step 6 – Name the Parts 1. Expand Geometry and Parts in the Outline Pole1

Keeper air

coil

1. Select each part right mouse click then left mouse click “Rename” and name parts as shown © 2006 ANSYS, Inc. All rights reserved.

Note: Order may vary Pole2

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BackBar


Step 7A – Insert Magnetic Flux Flux Density

1. Left click (select) the “Environment”

2. Right click to bring up the popup “context” menu

3. Select “Insert>Magnetic Flux Parallel” © 2006 ANSYS, Inc. All rights reserved.

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Step 7B – Hide unwanted unwanted bodies

1. Using the left mouse button and the control key select all geometry with the exception of “air” 2. Right mouse click to bring up the context menu 3. Select “Hide Body”


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Step 7C – Enter Box Select Mode

2. Activate “Box Select” from the toolbar


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Step 7D – Select bounding faces

1. Holding the left mouse key drag the box from right to left to select all geometry in and crossing the box

2. Select “Apply” © 2006 ANSYS, Inc. All rights reserved.

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Step 7E – Validate Selection

Verify that the 6 faces defining the air boundary have been selected © 2006 ANSYS, Inc. All rights reserved.

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Step 8A – Unhide all bodies

1. Select “Geometry”

2. Right mouse click to bring up the context menu 3. Select “Show All Bodies”


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Step 8B – Hide the enclosing enclosing air

1. Select the part representing the “air”

2. Right mouse click to bring up the context menu

3. Select “Hide Body”


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Step 9 – Set the “Current” value

1. In your “Environment” select the Conductor

2. Set the Conductor Current to 5000 mA © 2006 ANSYS, Inc. All rights reserved.

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Step 10A – Set Flux Results

1. Select the “Solution”

2. Right mouse click to bring up the context menu

3. Select “Insert>Electormagnetic>Total Flux Density” © 2006 ANSYS, Inc. All rights reserved.

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Step 10B – Set “Keeper” results 1. Set the selection filter to “bodies” 3. Select the Solution 2. Select the “Keeper”

4. Right mouse click to bring up the context menu © 2006 ANSYS, Inc. All rights reserved.

5. Select “Insert>Electormagnetic> Directional Force/Torque” 29


Step 10C – Set “BackBar” results 1. Set the selection filter to “bodies” 3. Select the Solution

4. Right mouse click to bring up the context menu © 2006 ANSYS, Inc. All rights reserved.

2. Select the “BackBar” and poles

5. Select “Insert>Electormagnetic> Directional Force/Torque” 30


Step 11A – Set Mesh Relevance

1. Select the “Mesh”

2. Set the Mesh “Relevance” to -100

This is required to reduce the size of the mesh when using ANSYS ED © 2006 ANSYS, Inc. All rights reserved.

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Step 11B – Set Mesh Size Control 1. Set the selection filter to “bodies” 3. Select “Mesh”

2. Select the “BackBar”, “Keeper” and poles

4. Right click and select “Insert>Sizing” This is required to reduce the size of the mesh when using ANSYS ED © 2006 ANSYS, Inc. All rights reserved.

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Step 11C – Set Element Size

3. Select “Solve”

1. Set the Element Size to 40 mm

This is required to reduce the size of the mesh when using ANSYS ED © 2006 ANSYS, Inc. All rights reserved.

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Step 12A View Flux Results

2. Use the ‘Vector Display” toolbar to adjust your result image 1. Select “Total Flux Density” © 2006 ANSYS, Inc. All rights reserved.

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Step 12B – Review Force/Torque 1. Select a two pane display

2. Select the first pane and the “Keeper” Result © 2006 ANSYS, Inc. All rights reserved.

3. Select the second pane and the “BackBar” and poles Result 35


Step 12B – Review Force/Torque

1. Select the folder tab to return to your Project Page


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Step 13 – Save Results


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ANSYS 10.0 Workbench Tutorial - Exercise 7, Electromagnetics

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