EM.Ferma Tutorial Lesson 6: Analyzing Permanent Magnets - Revision history

Asabet at 22:37, 17 September 2020

2020-09-17T22:37:28Z

Asabet at 14:09, 24 June 2019

2019-06-24T14:09:00Z

Asabet at 20:57, 28 August 2018

2018-08-28T20:57:13Z

Asabet at 15:53, 14 June 2018

2018-06-14T15:53:23Z

Asabet at 13:26, 25 May 2017

2017-05-25T13:26:38Z

Kazem Sabet at 20:03, 18 May 2017

2017-05-18T20:03:33Z

Kazem Sabet at 17:27, 18 May 2017

2017-05-18T17:27:03Z

Asabet at 19:29, 22 April 2017

2017-04-22T19:29:21Z

Asabet at 14:30, 2 September 2016

2016-09-02T14:30:28Z

Asabet at 14:27, 2 September 2016

2016-09-02T14:27:24Z

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 == Simulating Permeable Magnets ==
-In the previous parts, you assumed that the relative permeability of the permanent magnets was &mu;<sub>r</sub> = 1. Alnico is a permanent magnet material with &mu;<sub>r</sub> = 3.6. Open the property dialog of the group "PM_1" in the navigation tree and change its relative permittivity to 3.6.
+In the previous parts, you assumed that the relative permeability of the permanent magnets was &mu;<sub>r</sub> = 1. Alnico is a permanent magnet material with &mu;<sub>r</sub> = 3.6. Open the property dialog of the groups "PM_1" and "PM_2" in the navigation tree and change its relative permittivity to 3.6.
 <table>

@@ Line 233: / Line 233: @@
 </table>
-Also open the data manager and plot the data file "Sensor_1_Z_HTotal.DAT". This plot shows the variation of the magnetic field at the center of the magnets along the Z-axis. At z = 25mm, the magnetic field intensity is 260A/m.
+Also open the data manager and plot the data file "Sensor_1_Z_HTotal.DAT". This plot shows the variation of the magnetic field at the center of the magnets along the Z-axis. At z = 25mm, the magnetic field intensity is 275A/m.
 <table>

← Older revision		Revision as of 20:57, 28 August 2018
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	[[Image:Back_icon.png\|30px]] '''[[EM.Cube#EM.Ferma_Documentation \| Back to EM.Ferma Tutorial Gateway]]'''		[[Image:Back_icon.png\|30px]] '''[[EM.Cube#EM.Ferma_Documentation \| Back to EM.Ferma Tutorial Gateway]]'''
		+
		+	[[Image:Download2x.png\|30px]] '''[http://www.emagtech.com/downloads/ProjectRepo/EMFerma_Lesson6.zip Download projects related to this tutorial lesson]'''

	== Getting Started ==		== Getting Started ==

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 ! scope="col"| Plot Type
 ! scope="col"| Max. Size
-! scope="col"| Cone Ratio
+! scope="col"| Cone Length Ratio
 |-
 ! scope="row"| Sensor_1
@@ Line 104: / Line 105: @@
 | (0, 0, 0)
 | | Intensity
 | -
 | -
@@ Line 113: / Line 115: @@
 | 1.5
 | 0.75
 |-
 ! scope="row"| Sensor_3
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 | 1.5
 | 0.75
 |}

@@ Line 227: / Line 227: @@
 </table>
-Also open the data manager and plot the data file "Sensor_1_Z_HTotal.DAT" in EM.Grid. This plot shows the variation of the magnetic field at the center of the magnets along the Z-axis. At z = 25mm, the magnetic field intensity is 260A/m.
+Also open the data manager and plot the data file "Sensor_1_Z_HTotal.DAT". This plot shows the variation of the magnetic field at the center of the magnets along the Z-axis. At z = 25mm, the magnetic field intensity is 260A/m.
 <table>
@@ Line 316: / Line 316: @@
 </table>
-Also open the data manager and plot the data file "Sensor_1_Z_HTotal.DAT" in EM.Grid. The figure below shows that at z = 25mm, the magnetic field intensity has increased to 357A/m.
+Also open the data manager and plot the data file "Sensor_1_Z_HTotal.DAT". The figure below shows that at z = 25mm, the magnetic field intensity has increased to 357A/m.
 <table>
@@ Line 353: / Line 353: @@
 </table>
-Open the data manager and plot the data file "Sensor_1_Z_HTotal.DAT" in EM.Grid. You can see that along the Z-axis at the center of the two magnets, the field is very much localized and confined to the air gap region and its intensity has increased to a very high value of 634A/m.
+Open the data manager and plot the data file "Sensor_1_Z_HTotal.DAT". You can see that along the Z-axis at the center of the two magnets, the field is very much localized and confined to the air gap region and its intensity has increased to a very high value of 634A/m.
 <table>

← Older revision		Revision as of 20:03, 18 May 2017
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	<p> </p>		<p> </p>
		+	[[Image:Top_icon.png\|30px]] '''[[#What_You_Will_Learn \| Back to the Top of the Page]]'''
		+
	[[Image:Back_icon.png\|30px]] '''[[EM.Cube#EM.Ferma_Documentation \| Back to EM.Ferma Tutorial Gateway]]'''		[[Image:Back_icon.png\|30px]] '''[[EM.Cube#EM.Ferma_Documentation \| Back to EM.Ferma Tutorial Gateway]]'''

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 In this tutorial you will learn about the third type of magnetic source, <i>i.e.</i> a permanent magnets. You will also learn how to define a new variable and parameterize your physical structure subject to a certain constraint.
 == Getting Started ==
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 <p>&nbsp;</p>
-[[Image:Back_icon.png|40px]] '''[[EM.Cube#EM.Ferma_Tutorial_Lessons | Back to EM.Ferma Tutorial Gateway]]'''
+[[Image:Back_icon.png|30px]] '''[[EM.Cube#EM.Ferma_Documentation | Back to EM.Ferma Tutorial Gateway]]'''

@@ Line 269: / Line 269: @@
 Next, you have to associate this variable with the object properties. This requires a little bit of thinking. The height of the two cylinders must be set equal (50mm - gap_h)/2. This makes the total height of your structure h<sub>tot</sub> = (50mm - gap_h)/2 + gap_h + (50mm - gap_h)/2 = 50mm, as you want. In [[EM.Cube]], the local coordinate system (LCS) of a cylinder is always set up at the center of its bottom base. As you vary "gap_h", the bottom of "Cylinder_1" will always stay fixed at Z = 0, while the bottom of "Cylinder_2" must be located at 50 - (50mm - gap_h)/2 = 25mm + gap_h/2.
-Open the property dialog of "Cylinder_1" and set its height equal to "gap_h". Then, open the property dialog of "Cylinder_2", set its height equal to "gap_h" and set its Z-coordinate to "25+gap_h/2".
+Open the property dialog of "Cylinder_1" and set its height equal to "(50-gap_h)/2". Then, open the property dialog of "Cylinder_2", set its height equal to "(50-gap_h)/2" and set its Z-coordinate to "25+gap_h/2".
 <table>

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 <tr>
 <td>
-[[Image:Ferma L5 Fig47.png|thumb|left|550px|The initial variables list showing only the default system variables.]]
+[[Image:Ferma_L5_Fig47add.png|thumb|left|550px|The initial variables list showing only the default system variables.]]
 </td>
 </tr>