1、Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Page 1 of 23 Introduction The Magnetic Valve includes a fixed and a rotating part. The rotating body has to move, as quickly as possible, to rest in one of the 2 p
2、ossible stop positions. Driving current patterns are the input to generate suitable torques. The customer experienced different performances of the valve for different current patterns: sometimes he got strong bumps on the mechanic stops and failures of the valve behaviour. the customer decided to c
3、ommit a simulation of the magnetic and dynamic behaviour of the valve, instead to build a prototype. Analysis Goal The goal is ton achieve measure of the Magnetic Torque, as function of current and rotation angle within a parametric approach Owner: Enginsoft Usage Restrictions: Freely available for
4、use Industry: Automotive Application: Valve Physics: Electromagnetics Product(s)/Version: ANSYS-v10.1 Geometry Type(s): Solid Geometry Format(s): Design Modeler Model Size: 147070 Nodes, 105742 Elements Element Type(s): Edge 117 Estimated Demo Time: 15 Minutes to show, 12 minutes running time Custom
5、er: Competition: Comsol, Ansoft Challenge: Free accurate Mesh, Parametric Model, Non Linear Magnetic Analysis Key Features Used: Sphere of influence for meshing, BH Non Linear Curve data import, Parametric Analysis Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simula
6、tion of a Magnetic Valve ANSYS Workbench Simulation Page 2 of 23 Steps and Points to Convey. Picture Guide. Start ANSYS Workbench Environment, and choose “New Geometry”. Importing of external geometry Set the desired length unit: meters. 01) Click “File Open Import External Geometry File”. 02) Click
7、 on “Generate” in order to confirm the importation of the geometry. The geometry regards a magnetic valve. Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey. Picture Guide. Create a Para
8、metric, Relative Rotation between two groups of bodies 01) Create a local coordinate system (plane 4) by clicking on the “New Plane” icon in the tool bar. 02) In “Details of Plane4 . Type” choose from face in order to select the surface of interest. 03) Choose the space to the right of “Base Face” i
9、n Details of Plane4 and select the surface indicated in light blue in the plot at right. The local coordinate system “Plane 4” is now visible, centered on a face vertex 04) In “Details of Plane4 . Transform 1 (RMB)” insert an offset along X axis of 0.00825 m. 05) In “Details of Plane4 . Transform 1
10、(RMB)” insert an offset along Y axis of 0.0015 m. 06) Click Generate to create Plane4 Create another plane (Plane5). 07) In “Details of Plane5 Type” choose from plane. Base plane should be set to Plane4. 08) In “Details of Plane5 . Transform 1 (RMB)” insert a rotation about Z axis of 30. 09) Click G
11、enerate to create Plane5. Page 3 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey. Picture Guide. The local coordinate system “Plane 5” is now visible. 10) From the tool bar menu,
12、 select “Tools Freeze”. The freezing operation is indicated when bodies are displayed with transparency. 11) From the tool bar menu, select “Create Body Operation” set “Type” to “Move” click on the box to the right of Bodies. 12) Select the bodies highlighted at right (use the Ctrl button to select
13、multiple entities) and click Apply. Page 4 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey. Picture Guide. 13) In “Details of BodyOp1” choose the box to the right of “Source Plan
14、e” and pick on Plane4 in the Tree Outline. 14) In a similar fashion, set “Destination Plane” to Plane5. Then click on “Generate” to move the parts as shown at right. ENCLOSURE definition 01) From the tool bar menu, select “Tools Enclosure” in order to insert a control volume cylindrically shaped and
15、 aligned to Y axis. Set the Cushion to 0.0375 m and set “Merge Parts?” to “Yes”. 02) Click Generate to create the enclosure In the “Outline” tree the just created enclosure is now visible. Page 5 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Mag
16、netic Valve ANSYS Workbench Simulation Steps and Points to Convey Picture Guide Enclosure is visible in the “Model View” window. Page 6 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation CREATE the WINDING CO
17、IL 01) In the Tree Outline, Open “1 Part, 7 Bodies Part”. RMB on the last Solid in the list and choose “Hide Body” in the drop down menu. This will allow access to the surfaces of the imported geometry for forthcoming picking operations. 02) Create a new plane (Plane6) 03) In “Details of Plane6 . Ty
18、pe” choose “From Face”. 04) Click on the box to the right of “Base Face” and select the surface shown at right. 05) In “Details of Plane6 . Transform 1 (RMB)” insert an offset along Z axis of 0.0231 m. Click on Generate to create Plane6. 06) With Plane6 now active, go to the tool bar and choose “New
19、 Sketch”. 07) Select “Sketch1” in the “Tree Outline”. Page 7 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey Picture Guide Sketching mode for winding coil generation 08) Pick the
20、 Sketching tab at the bottom of the Tree Outline 09) Select “Circle” in the “Draw” window and choose the center (origin of Plane6) and an arbitrary poin some distance away from the center to create a circle. 10) Pick the Dimensions button at the bottom of the Sketching Toolboxes pane and choose “Rad
21、ius”. 11) Click on the circle and another arbitrary location for the radial dimension marker. 12) In “Details of Sketch1”, modify the radius R1 to be 0.00775 m. The sketch is now visible in the “Graphics” window. 13) From the tool bar select “Concept Line From Sketches”. Choose the circle and click
22、Apply in the box to the right of “Base Objects” in “Details of Line1”. “Operation” should be set to “Add Material”. Click Generate. 14) Choose the Line Body in the Tree Outline. 15) In “Details of Line Body” set: “Winding Body Yes” “Number of Turns” = 1 “CS Length” = 0.022 m “CS Length” = 0.00375 m
23、Page 8 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey Picture Guide 16) From the tool bar, select “View Show Cross Sections Solids”. The new winding body should appear as it doe
24、s in the figure to the right. ANGLE as PARAMETER 01) In the “Tree Outline” select “Plane5” 02) Make the rotation about Z axis as parameter by clicking on the box to the left of “FD1, Value 1”. 03) Rename the parameter as “angle”. Page 9 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006
25、 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey. Picture Guide. 04) From the tool bar, select “Tools OptionsCommon SettingsGeometry Import”. Remove “DS” from the field to the right of “Personal Parameter Key” to remove the DS prefix naming c
26、onvention restriction for importing parameters. Click OK. GO IN SIMULATION In the “Project” window, select “New Simulation”. In the “Simulation” window, the “Outline” tree should be as in figure. Page 10 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation
27、of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey Picture Guide Materials Properties Definition Select “Data” in the tool bar to open the “Engineering Data” window. Materials Properties Definition change defaults of STRUCTURAL STEEL 01) Select “Structural Steel” and click on
28、“Add/Remove Properties” in the “Electromagnetics” field and unselect the following items: - “Relative Permeability” - “Resistivity” 02) Check the box to the left of “B-H curve” and click OK. 03) Say “Yes” to the “Remove Material Properties” box that appears. 04) Open excel file “bh1.xls” and copy th
29、e two data columns (highlight them with the mouse cursor and type Cntl-C). Page 11 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey Picture Guide 05) Click the icon depicting an x
30、y plot to the right of “B-H Curve” 06) LMB on the 2 (second row) of the “Magnetic Flux Density vs. Magnetic Field Intensity” table and press “Ctrl +V” to paste the two column data from the .xls file. 07) Click on the B-H Curve icon at the lower right. The curve should appear as shown at right. NEW M
31、aterial definition IRON RMB on “Materials (2)” in the tree and choose “Insert New Material”. RMB on “New Material”, choose Rename and change the name of the new material to Iron. Define BH data as before but this time use data from “bh2.xls” file.NEW Material definition NEODYMIUM 01) Define a New ma
32、terial named “Neodymium”. 02) Among Electromagnetics properties let active just: “Linear Hard Material”: 03) Insert the following data: Cohercive Force: 7.9577 e5 A/m Residual Induction 1.2 T Page 12 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a
33、 Magnetic Valve ANSYS Workbench Simulation Assign MAT PROPS to parts 01) Return to the Simulation Tab 02) In the Outline Tree, open GeometryPart and use the Cntl button to select both of the RIC9512_105 items. The parts should be highlighted as shown at right. 03) In Details of “Multiple Selection”,
34、 change material from “Structural Steel” to “Iron” Page 13 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey Picture Guide 04) Select the part shown at right. 05) Change material f
35、rom “Structural Steel” to “Neodymium” MESH 01) Select the coil support solid (see figure) 02) RMB on “Mesh” on the tree to insert a sizing control: Element Size 2e-3 03) Insert another sizing control , 1e-3, referred to 5 bodies as in the following picture. It may help to hide the 4 thsolid (the “ai
36、r enclosure) in the Outline tree to simplify selecting these parts.Page 14 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey Picture Guide 5 bodies for sizing setting n.2 04) In th
37、e Outline tree, RMB on Model and insert a “Coordinate Systems” branch. RMB on the Coordinate Systems branch and insert (define) a new Coordinate System. Choose “Origin” in the Details of “Coordinate System” pane, select the surface shown at right, and click Apply. 05) RMB on Mesh in the Outline to i
38、nsert a third sizing control: For “Type”, choose “Sphere of Influence” Sphere Center: Coordinate System (defined just before) Radius 1.5e-2 Element size 5e-4 Areas to be applied are the following (10 areas) Page 15 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic
39、Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey Picture Guide 10 Areas where to apply the Sphere of Influence sizing control 06) Click on Mesh - Preview Mesh The Mesh should result as in figure, if the “Air” solid enclosure body is hide LOADS Set the Conductor Cu
40、rrent value in details window related to “Conductor Winding Body”: 1000 A BOUNDARY CONDITIONS RMB on Environment in the tree and insert a Magnetic Flux Parallel object. Use the Cntl button to select the 3 exterior surfaces of the enclosure and click Apply. Page 16 of 23 Workbench Simulation of a Mag
41、netic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey. Picture Guide. POSTPROCESSING SETTINGS 01) Insert under the “Solution” tree the following output requests: Total Flux Density Total Flux Intensity 02) Select 3 bodi
42、es as in figure 03) Insert a “Directional Force/Torque” output request with details: In Details of “Directional Force/Torque” pane, change “Global Coordinate System” to “Coordinate System” (this is the user-defined coordinate system centered on the top surface of the permanent magnet). Set Orientati
43、on to Y Direction (rotation axis) 04) repeat Directional Force/Torque Request for both X and Z axis direction 05) By a right click under the Solution Tree Insert a “Solution Information” request to monitor the run during the solution Page 17 of 23 Workbench Simulation of a Magnetic Valve October 10,
44、 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation SOLVE 01) Highlight the Environment tree to see/check all Boundary & Loads previously defined. 02) Click on the “SOLVE” Icon to launch the run. Solution times takes about 12 minutes on a 2.8 Ghz single processor 32b
45、it PC Page 18 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey Picture Guide REVIEW RESULTS 01) See the Total Flux of Magnetic results 02) Set up a Vector Image of the Magnetic Fi
46、eld 03) After Vector Image settings show a Vector Plot of Magnetic Field Page 19 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation 03) See the Magnetic Force distribution, Y axis direction, on the requested
47、parts. 04) The same for X, Z directions 05) Activate the view from Y Global Axis 06) Define a “Slice Plane” 07) Draw the slice plane trace at nearly along the Y global direction 08) View from the X Global direction 09) Activate “show elements” and show the magnetic field Page 20 of 23 Workbench Simu
48、lation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation Steps and Points to Convey Picture Guide SET UP A PARAMETRIC ANALYSIS 01) Click on “Model” 02) Click on CAD Parameters Detail to activate the “angle” as a parameter. This will b
49、e the first INPUT parameter. 03) Click on Environment and Duplicate by right click 04) Activate the Conductor Current Value as parameter. This is the second INPUT parameter n.2. 05) Activate the Torque value in Y direction as OUTPUT parameter (Third Parameter) Page 21 of 23 Workbench Simulation of a Magnetic Valve October 10, 2006 A Guide for Magnetic Simulation of a Magnetic Valve ANSYS Workbench Simulation 06) Click on “Solution” of Environment 2 and then click on Parameter Manager 07) Set up many cases as you like, for example with 4 current values, 3 v
