IntroductionThe 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 possible 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 commit a simulation of the magnetic and dynamic behaviour of the valve, instead to build a prototype.Analysis GoalThe goal is ton achieve measure of the Magnetic Torque, as function of current and rotation angle within a parametric approachOwner:EnginsoftUsage Restrictions:Freely available for useIndustry:AutomotiveApplication:ValvePhysics:ElectromagneticsProduct(s)/Version:ANSYS-v10.1Geometry Type(s):SolidGeometry Format(s): Design ModelerModel Size:147070 Nodes, 105742 ElementsElement Type(s): Edge 117Estimated Demo Time:15 Minutes to show, 12 minutes running timeCustomer:Competition:Comsol,AnsoftChallenge:Free accurate Mesh, Parametric Model, Non LinearMagnetic AnalysisKey Features Used:Sphere of influence for meshing, BH Non Linear Curvedata import, Parametric AnalysisSteps and Points to Convey.Picture Guide.Start ANSYS Workbench Environment, and choose “New Geometry”.Importing of external geometrySet the desired length unit: meters.01) Click “File > Open > Import External Geometry File”.02) Click on “Generate” in order to confirm the importation of the geometry.The geometry regards a magnetic valve.Steps and Points to Convey.Picture Guide.Create a Parametric, Relative Rotation between two groups of bodies01) 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” in 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 vertex04) In “Details of Plane4 >. Transform 1 (RMB)” insert an offset along X axis of –0.00825 m.05) In “Details of Plane4 >. Transform 1 (RMB)” insert an offset along Y axis of 0.0015 m.06) Click Generate to create Plane4Create 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 Generate to create Plane5.Steps and Points to Convey. Picture Guide.The local coordinate system “Plane 5” is now visible.10) From the tool bar menu, 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 multiple entities) and click Apply.Steps and Points to Convey.Picture Guide.13) In “Details of BodyOp1” choose the box to the right of “Source Plane” 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 definition01) From the tool bar menu, select “Tools >Enclosure” in order to insert a control volume cylindrically shaped and aligned to Y axis. Set the Cushion to 0.0375 m and set “Merge Parts?” to “Yes”.02) Click Generate to create the enclosureIn the “Outline” tree the just created enclosure is now visible.Steps and Points to Convey Picture GuideEnclosure is visible in the “Model View”window.CREATE the WINDING COIL01) 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 >. Type” 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 Sketch”.07) Select “Sketch1” in the “Tree Outline”.Steps and Points to Convey Picture Guide Sketching mode for winding coil generation08) Pick the Sketching tab at the bottom of theTree Outline09) Select “Circle” in the “Draw” window andchoose the center (origin of Plane6) and anarbitrary poin some distance away from thecenter to create a circle.10) Pick the Dimensions button at the bottom ofthe Sketching Toolboxes pane and choose“Radius”.11) Click on the circle and another arbitrarylocation for the radial dimension marker.12) In “Details of Sketch1”, modify the radiusR1 to be 0.00775 m.The sketch is now visible in the “Graphics”window.13) From the tool bar select “Concept > LineFrom Sketches”. Choose the circle and clickApply in the box to the right of “Base Objects”in “Details of Line1”. “Operation” should be setto “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 mSteps and Points to ConveyPicture Guide16) From the tool bar, select “View > Show Cross Sections Solids”. The new winding body should appear as it does in the figure to the right.ANGLE as PARAMETER01) 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”.Steps and Points to Convey.Picture Guide.04) From the tool bar, select “Tools > Options>Common Settings>Geometry Import”. Remove “DS” from the field to the right of “Personal Parameter Key” to remove the DS prefix naming convention restriction for importing parameters. Click OK.GO IN SIMULATIONIn the “[Project]” window, select “New Simulation”.In the “[Simulation]” window, the “Outline” tree should be as in figure.Steps and Points to ConveyPicture GuideMaterials Properties DefinitionSelect “Data” in the tool bar to open the “[Engineering Data]” window.Materials Properties Definitionchange defaults of STRUCTURAL STEEL01) Select “Structural Steel” and click on “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 the two data columns (highlight them with the mouse cursor and type Cntl-C).Steps and Points to ConveyPicture Guide05) Click the icon depicting an xy 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 Material definition IRONRMB 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 NEODYMIUM01) Define a New material 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 T01) Return to the Simulation Tab02) In the Outline Tree, open Geometry>Part 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”, changematerial from “Structural Steel” to “Iron”Steps and Points to ConveyPicture Guide04) Select the part shown at right.05) Change material from “Structural Steel” to “Neodymium”MESH01) Select the coil support solid (see figure)02) RMB on “Mesh” on the tree to insert a sizing control: Element Size 2e-303) Insert another sizing control , 1e-3, referred to 5 bodies as in the following picture. It may help to hide the 4th solid (the “air enclosure) in the Outline tree to simplify selecting these parts.Steps and Points to ConveyPicture Guide5 bodies for sizing setting n.204) In the 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 insert a third sizing control:For “Type”, choose “Sphere of Influence”• Sphere Center: Coordinate System (defined just before) • Radius 1.5e-2 • Element size 5e-4Areas to be applied are the following (10 areas)Steps and Points to ConveyPicture Guide10 Areas where to apply the Sphere of Influence sizing control06) Click on Mesh -> Preview MeshThe Mesh should result as in figure, if the “Air” solid enclosure body is hideLOADSSet the Conductor Current value in details window related to “Conductor Winding Body”: 1000 ABOUNDARY CONDITIONSRMB 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.Steps and Points to Convey.Picture Guide.POSTPROCESSING SETTINGS01) Insert under the “Solution” tree the following output requests: • Total Flux Density • Total Flux Intensity 02) Select 3 bodies as in figure03) 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 Orientation to Y Direction (rotation axis)04) repeat Directional Force/Torque Request for both X and Z axis direction05) By a right click under the Solution Tree Insert a “Solution Information” request to monitor the run during the solutionSOLVE01) Highlight the Environment tree tosee/check all Boundary & Loads previously defined.02) Click on the “SOLVE” Icon to launchthe run.Solution times takes about 12 minutes on a 2.8 Ghz single processor 32bit PCSteps and Points to ConveyPicture GuideREVIEW RESULTS01) See the Total Flux of Magnetic results 02) Set up a Vector Image of the MagneticField03) After Vector Image settings show a Vector Plot of Magnetic Field03)See the Magnetic Force distribution, Yaxis direction, on the requested parts. 04)The same for X, Z directions05)Activate the view from Y Global Axis06)Define a “Slice Plane”07)Draw the slice plane trace at nearlyalong the Y global direction08)View from the X Global direction09)Activate “show elements” and show themagnetic fieldSteps and Points to Convey Picture GuideSET UP A PARAMETRIC ANALYSIS01) Click on “Model”02) Click on CAD Parameters Detail toactivate the “angle” as a parameter. Thiswill be the first INPUT parameter.03) Click on Environment and Duplicate byright click04) Activate the Conductor Current Value asparameter. This is the second INPUTparameter n.2.05) Activate the Torque value in Y directionas OUTPUT parameter (ThirdParameter)06)Click on “Solution” of Environment 2and then click on Parameter Manager 07)Set up many cases as you like, forexample with 4 current values, 3 values other than the previously solved.。
