ANSYS-Workbench-电磁场分析例子剖析课件.ppt

1、ANSYS, Inc. Proprietary 2004 ANSYS, Inc.ANSYS Workbench 9.0 ElectromagneticsPaul LethbridgeANSYS, Inc. Proprietary 2004 ANSYS, Inc.ContentsWorkbench Electromagnetics Workbench Emag RoadmapDesign Modeler Enclosure Symmetry Winding Bodies Winding ToolSimulationANSYS, Inc. Proprietary 2004 ANSYS, Inc.W

2、orkbench Emag Roadmap LF Emag capability will be exposed over several release cycles: 3D Magnetostatics (9.0) 3D Current conduction (10.0) 3D Electrostatics Circuit elements Time transient & 2DWorkbench v9.0 is the first release with electromagnetic analysis capability. Support solid and stranded (w

3、ound) conductors Automated computations of force, torque, inductance, and coil flux linkage. Easily set up simulations to compute results as a function of current, stroke, or rotor angle.Workbench Emag capability is mapped to & accessed via: ANSYS Emag (stand alone or enabled task) ANSYS Multiphysic

4、s license keys.ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Workbench Emag Markets Target markets: Solenoid actuators Permanent magnet devices Sensors Rotating Electric machines Synchronous machines DC machines Permanent magnet machinesANSYS, Inc. Proprietary 2004 ANSYS, Inc.ContentsWorkbench Electromagn

5、etics Workbench Emag RoadmapDesign Modeler Enclosure Symmetry Winding bodies Winding ToolSimulationANSYS, Inc. Proprietary 2004 ANSYS, Inc.Enclosure & Fill ToolsDesign Modeler (DM) includes two features to allow a user to create a volumetric “field” body associated with a solid model. Enclosure tool

6、: Released at 8.0. This tool is used to completely enclose the bodies of a model in a material typically required for an Emag analysis. Fill Tool: Released at 9.0 (Beta at 8.1). Similar function to enclosure, but only fills interior cavities. Example of a hemispherical enclosure around an electromag

7、netANSYS, Inc. Proprietary 2004 ANSYS, Inc. The Fill feature create a new frozen body to fill the space occupied by a hole or cavity. Useful for interior cavity electromagnetic applications. Fill FeatureANSYS, Inc. Proprietary 2004 ANSYS, Inc.Enclosure SymmetryFeature: The Enclosure feature now supp

8、orts symmetry models when the enclosure shape is a box or a cylinder: Up to 3 three symmetry planes can be specified. Full or partial models can be included in the Enclosure. During the model transfer from DesignModeler to Simulation, the enclosure feature with symmetry planes forms two kinds of nam

9、ed selections: Open Domain Symmetry PlaneANSYS, Inc. Proprietary 2004 ANSYS, Inc.ContentsWorkbench Electromagnetics Workbench Emag RoadmapDesign Modeler Enclosure Symmetry Winding bodies Winding ToolSimulationANSYS, Inc. Proprietary 2004 ANSYS, Inc.Winding Bodies & Tool Feature: Design Modeler (DM)

10、includes two new tools to allow a user to easily create current carrying coils: Winding Bodies: Used to represent wound coils for source excitation. The advantage of these bodies is that they are not 3D CAD objects, and hence simplify modeling/meshing of winding structures. Upon “attach to Simulatio

11、n”, Winding Bodies are assigned as Conductor bodies. Winding Tool: Used to create more complex coils for motor windings. The Winding Tool uses a Worksheet table format to drive the creation of multiply connected Winding Bodies. Or a user can read in a text file created by MSExcel. Benefits: Very eas

12、y to use, rapid creation of coil windings. ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Winding BodiesA line body can be promoted to a winding body. Turns and cross-section (CS) dimensions are enteredWinding cross-section displayedTangent orientation vector (blue arrow) defines direction of current. ANSY

13、S, Inc. Proprietary 2004 ANSYS, Inc.Winding ToolComplex coil windings may be created using the Winding Tool: The Winding Tool inserts a “Winding#” into the model tree. A “Details” view is used for geometric placement.ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Winding ToolEach Winding consists a number

14、of related Winding Bodies.The related Winding Bodies are shown in the Parts/Bodies branch:Winding BodiesANSYS, Inc. Proprietary 2004 ANSYS, Inc.Winding Table File Each Winding has a Winding Table File associated with it. The Winding Table File can be created directly in DM The Winding Table File can

15、 be exported to or imported from a text file. Each row corresponds to a created Winding Body ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Winding Table File The Winding Table File can be exported to or imported from a text file. ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Winding Tool Example Winding 1 highl

16、ighted with rotor Complete DC Motor modelANSYS, Inc. Proprietary 2004 ANSYS, Inc.Winding Options Coils may have different radii between IN & OUT slots Multiple coils may be stacked in the same slotANSYS, Inc. Proprietary 2004 ANSYS, Inc.Winding Options - Skew A skew angle may be identified for the c

17、oil winding slots Many motor designs employ a skewed coil form.ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Winding Slot Clash DetectionWinding Tool automatically detects if the coil clashed with another part and warns the userANSYS, Inc. Proprietary 2004 ANSYS, Inc.ContentsWorkbench Electromagnetics Wor

18、kbench Emag Roadmap Design Modeler Enclosure Symmetry Winding bodies Winding Tool Simulation Tools Layout Winding bodies Material Properties Air Gap Mesh Sizing Conductors SolutionANSYS, Inc. Proprietary 2004 ANSYS, Inc.Simulation Tools LayoutElectromagnetic ToolbarSimulation Environment:Emag bounda

19、ry conditionsConductor source excitationSolution ResultsVoltageCurrent DensityFieldForceTorqueInductance Flux linkageANSYS, Inc. Proprietary 2004 ANSYS, Inc.Emag Simulation Wizard Interactively walks a user through required analysis steps.ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Winding Body Transfer

20、 in SimulationWinding bodies are automatically assigned to conductor bodies. From the Winding Tool, each Phase Winding is assigned as a unique conductor.In this example, Conductor A consists of 2 winding bodies. ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Material Property SupportBoth linear & nonlinear

21、 Emag materials are supported by Engineering Data: Soft materials (Steel, iron, etc.) Constant (isotropic) Laminated (orthotropic) Linear/nonlinear (single B-H curve) Hard materials (NdFeB, SmCo, Alnico) Linear Nonlinear Library of 35 BH curves provided 35 common materialsANSYS, Inc. Proprietary 200

22、4 ANSYS, Inc.Materials BH Curve Library ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Materials User BH Curves BH curves with up to 500 data points are supportedANSYS, Inc. Proprietary 2004 ANSYS, Inc.Materials - Permanent MagnetsCoordinate systems are used to align the polarization axis of a magnet. Cart

23、esian and Radial Magnetization are supported.ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Air Gap Mesh Sizing Requirement: . In an electromagnetics analysis models typically include narrow gaps between parts such as rotors and stators. It is important to have a refined mesh in these gaps. Feature: Air Ga

24、p Mesh sizing. As for other mesh controls, air gaps are assigned under Advanced Controls in the Mesh Detail. Benefits: Easy to use mesh refinement, resulting in more accurate analysis results.ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Air Gap Mesh SizingANSYS, Inc. Proprietary 2004 ANSYS, Inc.Conductor

25、 Objects identify conductors for excitation, inductance, and Post processing. Can be scoped to solid bodies (solid conductors), or Winding Bodies (wound coils)Excitation: Supports voltage and current loading for solid conductors. Current and phase angle are supported for Winding Bodies.Conductor Obj

26、ectsANSYS, Inc. Proprietary 2004 ANSYS, Inc.Solution ResultsANSYS, Inc. Proprietary 2004 ANSYS, Inc.Vector & Contour PlotsVector / Contour is selected in the Solution objects “Definition” or Results toolbarANSYS, Inc. Proprietary 2004 ANSYS, Inc.Vector PlotsVector plot arrow scale, 2D/3D arrows and

27、arrow density can be defined allowing excellent visualization of the electromagnetic fieldANSYS, Inc. Proprietary 2004 ANSYS, Inc.Inductance & Flux LinkageSolution branch can insert Inductance & Flux linkage post processing calculations. Self and mutual inductance is computed. ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Parameter SweepsThe Emag analysis can be fully parameterized so that a user can easily extract force or torque versus rotor position etc.ANSYS, Inc. Proprietary 2004 ANSYS, Inc.Parameter SweepsGraph of results automatically created.ANSYS, Inc. Proprietary 2004 ANSYS, Inc.END